/* ==========================================================================
   黄果短剧 · 官方发布页
   设计：暖芒果 / 奶油纸感 / 编辑部式排版
   ========================================================================== */

:root {
  --ink: #1b1610;
  --ink-2: #3a3128;
  --ink-soft: #6b5c49;
  --cream: #fcf6e8;
  --paper: #fffdf7;
  --mango: #f7b733;
  --mango-deep: #e07a0c;
  --coral: #d95b3a;
  --leaf: #2e6b4f;
  --line: rgba(27, 22, 16, 0.12);
  --line-strong: rgba(27, 22, 16, 0.22);
  --shadow: 0 18px 48px -24px rgba(27, 22, 16, 0.45);
  --radius: 22px;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
    system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas,
    "Liberation Mono", monospace;
  --container: 1160px;
}

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

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

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

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

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

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

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

:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--cream);
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}

/* ============================ 顶部导航 ============================ */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(252, 246, 232, 0.86);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px -24px rgba(27, 22, 16, 0.6);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  padding: 5px 14px 5px 6px;
  border-radius: 15px;
  background: var(--ink);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.brand:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -18px rgba(27, 22, 16, 0.9);
}

.brand img {
  height: 44px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-2);
  padding: 6px 0;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--mango-deep);
  transition: right 0.25s ease;
}

.nav-link:hover {
  color: var(--ink);
}

.nav-link:hover::after {
  right: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 8px;
}

.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  align-items: center;
  justify-content: center;
  background: rgba(255, 253, 247, 0.6);
}

.menu-btn span {
  position: relative;
  display: block;
  width: 18px;
  height: 1.8px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, background-color 0.25s ease;
}

.menu-btn span::before,
.menu-btn span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.8px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease;
}

.menu-btn span::before {
  top: -6px;
}

.menu-btn span::after {
  top: 6px;
}

.menu-btn[aria-expanded="true"] span {
  background: transparent;
}

.menu-btn[aria-expanded="true"] span::before {
  transform: translateY(6px) rotate(45deg);
}

.menu-btn[aria-expanded="true"] span::after {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: 78px 0 auto;
  z-index: 90;
  display: none;
  padding: 16px 24px 26px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.mobile-menu.is-open {
  display: block;
  animation: menu-in 0.22s ease both;
}

.mobile-menu a {
  display: block;
  padding: 13px 4px;
  font-size: 16px;
  font-weight: 600;
  border-bottom: 1px solid var(--line);
}

.mobile-menu .btn {
  margin-top: 18px;
  border-bottom: 0;
}

@keyframes menu-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
}

/* ============================ 按钮 ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 15px 28px;
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.2;
  transition: transform 0.2s ease, box-shadow 0.2s ease,
    background-color 0.2s ease, color 0.2s ease;
}

.btn svg {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
}

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

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -14px rgba(27, 22, 16, 0.7);
}

.btn--mango {
  background: var(--mango);
  color: var(--ink);
  border-color: var(--mango);
}

.btn--mango:hover {
  transform: translateY(-2px);
  background: #ffc84f;
  box-shadow: 0 14px 30px -14px rgba(224, 122, 12, 0.85);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
}

.btn--ghost:hover {
  transform: translateY(-2px);
  background: rgba(27, 22, 16, 0.05);
}

.btn--light {
  background: var(--cream);
  color: var(--ink);
  border-color: var(--cream);
}

.btn--light:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -16px rgba(0, 0, 0, 0.8);
}

.btn--outline-light {
  background: transparent;
  color: var(--cream);
  border-color: rgba(252, 246, 232, 0.4);
}

.btn--outline-light:hover {
  transform: translateY(-2px);
  background: rgba(252, 246, 232, 0.1);
}

.btn--sm {
  padding: 11px 20px;
  font-size: 14px;
}

/* ============================ 通用区块 ============================ */
.section {
  position: relative;
  padding: 100px 0;
}

.section--paper {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section--tint {
  background: linear-gradient(180deg, #fff6e0 0%, #fbeed2 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section--dark {
  background: var(--ink);
  color: var(--cream);
  overflow: hidden;
}

.section--dark::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -120px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(247, 183, 51, 0.22) 0%,
    rgba(247, 183, 51, 0) 68%
  );
  pointer-events: none;
}

.section--dark .section-label {
  color: var(--mango);
}

.section--dark h2,
.section--dark h3 {
  color: var(--cream);
}

.section--dark .lead {
  color: rgba(252, 246, 232, 0.68);
}

.section-head {
  max-width: 720px;
  margin-bottom: 46px;
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mango-deep);
}

.section-label::before {
  content: "";
  width: 22px;
  height: 1.5px;
  background: currentColor;
  opacity: 0.6;
}

.section-label .num {
  padding: 3px 8px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 10.5px;
  letter-spacing: 0.08em;
}

h2 {
  margin: 0 0 16px;
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

h2 .accent {
  position: relative;
  isolation: isolate;
  white-space: nowrap;
}

h2 .accent::after {
  content: "";
  position: absolute;
  left: -2px;
  right: -2px;
  bottom: 0.06em;
  height: 0.34em;
  z-index: -1;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--mango), rgba(247, 183, 51, 0.35));
  transform: skewX(-8deg);
}

.lead {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ============================ 首屏 ============================ */
.hero {
  position: relative;
  padding: 142px 0 84px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-bg::before {
  content: "";
  position: absolute;
  top: -220px;
  right: -160px;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(247, 183, 51, 0.42) 0%,
    rgba(247, 183, 51, 0) 66%
  );
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    rgba(27, 22, 16, 0.13) 1px,
    transparent 1px
  );
  background-size: 22px 22px;
  -webkit-mask-image: radial-gradient(
    ellipse 60% 50% at 78% 30%,
    #000 0%,
    transparent 78%
  );
  mask-image: radial-gradient(
    ellipse 60% 50% at 78% 30%,
    #000 0%,
    transparent 78%
  );
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 40px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  padding: 7px 16px 7px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 253, 247, 0.7);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

.eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--leaf);
  box-shadow: 0 0 0 4px rgba(46, 107, 79, 0.14);
}

.hero h1 {
  margin: 0 0 24px;
  font-size: clamp(38px, 4.9vw, 66px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.hero h1 .hl {
  position: relative;
  isolation: isolate;
  display: inline;
  white-space: nowrap;
}

.hero h1 .hl::after {
  content: "";
  position: absolute;
  left: -3px;
  right: -3px;
  bottom: 0.04em;
  height: 0.32em;
  z-index: -1;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--mango) 0%, #f8cd70 100%);
  transform: skewX(-9deg);
}

.hero .lead {
  max-width: 36em;
  font-size: 17px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 32px 0 22px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--ink-soft);
}

.hero-trust li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.hero-trust svg {
  width: 14px;
  height: 14px;
  color: var(--leaf);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.stat strong {
  display: block;
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat strong em {
  font-style: normal;
  font-size: 0.62em;
  font-weight: 700;
  margin-left: 2px;
}

.stat span {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

/* 首屏插画 */
.hero-art {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 520px;
}

.hero-art::before {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: min(92%, 470px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px dashed rgba(27, 22, 16, 0.18);
  animation: spin 90s linear infinite;
  pointer-events: none;
}

.hero-cover {
  position: relative;
  z-index: 2;
  width: min(370px, 80%);
  filter: drop-shadow(0 34px 42px rgba(27, 22, 16, 0.22));
  animation: float 7s ease-in-out infinite;
}

.hero-cover img {
  width: 100%;
  height: auto;
  border-radius: 24px;
}

.float-card {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 253, 247, 0.94);
  box-shadow: 0 16px 34px -20px rgba(27, 22, 16, 0.55);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  animation: float 6s ease-in-out infinite;
}

.float-card b {
  display: block;
  font-size: 12.5px;
  line-height: 1.35;
}

.float-card small {
  display: block;
  font-size: 10.5px;
  color: var(--ink-soft);
  line-height: 1.4;
}

.float-card--sync {
  top: 13%;
  left: 0;
  animation-delay: -2s;
}

.float-card--cache {
  bottom: 14%;
  right: 0;
  animation-delay: -4s;
}

.float-card .tick {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border-radius: 10px;
  background: var(--leaf);
  color: #fff8e6;
}

.float-card .tick svg {
  width: 15px;
  height: 15px;
}

.sticker {
  position: absolute;
  z-index: 3;
  top: 3%;
  right: 1%;
  display: grid;
  place-items: center;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: var(--mango);
  border: 1.5px solid var(--ink);
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.3;
  text-align: center;
  transform: rotate(9deg);
  box-shadow: 4px 5px 0 var(--ink);
}

.sticker span {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
  display: block;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ============================ 节奏（深色） ============================ */
.rhythm-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.rhythm-card {
  position: relative;
  padding: 30px 26px 28px;
  border: 1px solid rgba(252, 246, 232, 0.14);
  border-radius: var(--radius);
  background: linear-gradient(
    165deg,
    rgba(252, 246, 232, 0.07) 0%,
    rgba(252, 246, 232, 0.02) 100%
  );
  transition: transform 0.25s ease, border-color 0.25s ease,
    background-color 0.25s ease;
}

.rhythm-card:hover {
  transform: translateY(-4px);
  border-color: rgba(247, 183, 51, 0.5);
  background: rgba(247, 183, 51, 0.07);
}

.rhythm-card .time {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mango);
  padding: 3px 9px;
  border: 1px solid rgba(247, 183, 51, 0.35);
  border-radius: 999px;
}

.rhythm-card h3 {
  margin: 18px 0 10px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
}

.rhythm-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(252, 246, 232, 0.66);
}

.rhythm-note {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 34px 0 0;
  font-size: 14.5px;
  color: rgba(252, 246, 232, 0.72);
}

.rhythm-note::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--mango);
  flex: 0 0 auto;
}

/* ============================ 场景 ============================ */
.moments-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.moment-card {
  display: flex;
  flex-direction: column;
  padding: 26px 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  transition: transform 0.25s ease, box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.moment-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}

.moment-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  border-radius: 15px;
  background: rgba(247, 183, 51, 0.2);
  color: var(--mango-deep);
}

.moment-card:nth-child(2) .moment-icon {
  background: rgba(217, 91, 58, 0.12);
  color: var(--coral);
}

.moment-card:nth-child(3) .moment-icon {
  background: rgba(46, 107, 79, 0.12);
  color: var(--leaf);
}

.moment-card:nth-child(4) .moment-icon {
  background: rgba(27, 22, 16, 0.07);
  color: var(--ink);
}

.moment-icon svg {
  width: 24px;
  height: 24px;
}

.moment-card h3 {
  margin: 0 0 8px;
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.45;
}

.moment-card p {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.moment-tag {
  margin-top: auto;
  align-self: flex-start;
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(27, 22, 16, 0.055);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

/* ============================ 片单 ============================ */
.playlist-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.playlist-top .section-head {
  margin-bottom: 0;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 4px;
}

.tab {
  padding: 9px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-soft);
  transition: background-color 0.2s ease, color 0.2s ease,
    border-color 0.2s ease, transform 0.2s ease;
}

.tab:hover {
  color: var(--ink);
  border-color: var(--ink);
}

.tab[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--cream);
}

.drama-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px 20px;
}

.drama {
  min-width: 0;
}

.drama[hidden] {
  display: none;
}

.drama-cover {
  position: relative;
  display: block;
  aspect-ratio: 3 / 4;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 12px 28px -20px rgba(27, 22, 16, 0.7);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.drama-cover img {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.drama-cover .badge {
  position: absolute;
  z-index: 3;
  top: 12px;
  left: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(23, 19, 16, 0.72);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.03em;
  color: #fff8e6;
}

.drama:hover .drama-cover {
  transform: translateY(-5px);
  box-shadow: 0 24px 40px -24px rgba(27, 22, 16, 0.7);
}

.drama:hover .drama-cover img {
  transform: scale(1.045);
}

.drama-body {
  padding-top: 13px;
}

.drama-body h3 {
  margin: 0 0 4px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
}

.drama-body p {
  margin: 0;
  font-size: 12.5px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.grid-note {
  margin: 30px 0 0;
  padding-top: 22px;
  border-top: 1px dashed var(--line-strong);
  font-size: 13px;
  color: var(--ink-soft);
}

/* ============================ 能力 ============================ */
.feature-layout {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 56px;
  align-items: center;
}

.feature-figure {
  position: relative;
  margin: 0;
  padding: 10px;
  border-radius: 30px;
  background: linear-gradient(
    160deg,
    rgba(247, 183, 51, 0.26) 0%,
    rgba(247, 183, 51, 0.05) 55%,
    rgba(46, 107, 79, 0.08) 100%
  );
  border: 1px solid var(--line);
}

.feature-figure svg {
  width: 100%;
  height: auto;
  border-radius: 22px;
}

.feature-figure figcaption {
  padding: 14px 8px 4px;
  font-size: 12.5px;
  color: var(--ink-soft);
  text-align: center;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 30px;
}

.feature-item {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.feature-item h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 7px;
  font-size: 16.5px;
  font-weight: 700;
}

.feature-item h3::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--mango-deep);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.feature-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ============================ 上手 ============================ */
.start-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.steps {
  display: grid;
  gap: 0;
  counter-reset: step;
}

.step {
  position: relative;
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 20px;
  padding: 0 0 30px;
}

.step:last-child {
  padding-bottom: 0;
}

.step::before {
  content: "";
  position: absolute;
  left: 26px;
  top: 54px;
  bottom: 4px;
  width: 1.5px;
  background: repeating-linear-gradient(
    to bottom,
    var(--line-strong) 0 5px,
    transparent 5px 11px
  );
}

.step:last-child::before {
  display: none;
}

.step-num {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 1.5px solid var(--ink);
  background: var(--mango);
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  box-shadow: 3px 4px 0 rgba(27, 22, 16, 0.9);
}

.step h3 {
  margin: 9px 0 6px;
  font-size: 18.5px;
  font-weight: 700;
  line-height: 1.45;
}

.step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.step-figure {
  margin: 0;
}

.step-figure svg {
  width: 100%;
  height: auto;
}

.note {
  display: flex;
  gap: 14px;
  margin-top: 34px;
  padding: 18px 22px;
  border: 1px solid rgba(46, 107, 79, 0.24);
  border-left: 3px solid var(--leaf);
  border-radius: 4px 16px 16px 4px;
  background: rgba(46, 107, 79, 0.06);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.note strong {
  flex: 0 0 auto;
  color: var(--leaf);
}

/* ============================ 声音 ============================ */
.voices-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.voice {
  position: relative;
  margin: 0;
  padding: 30px 26px 24px;
  border: 1px solid rgba(27, 22, 16, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.78);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.voice:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.voice::before {
  content: "“";
  position: absolute;
  top: 6px;
  left: 20px;
  font-family: Georgia, "Songti SC", serif;
  font-size: 64px;
  line-height: 1;
  color: rgba(224, 122, 12, 0.28);
}

.voice p {
  position: relative;
  margin: 18px 0 22px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-2);
}

.voice footer {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.voice .avatar {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--ink);
  color: var(--mango);
  font-size: 14px;
  font-weight: 700;
}

.voice cite {
  font-style: normal;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.5;
}

.voice cite span {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.voices-note {
  margin: 26px 0 0;
  font-size: 12.5px;
  color: var(--ink-soft);
}

/* ============================ FAQ ============================ */
.faq-list {
  max-width: 860px;
  border-top: 1px solid var(--line-strong);
}

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

.faq-h {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}

.faq-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 24px 2px;
  text-align: left;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  transition: color 0.2s ease;
}

.faq-q:hover {
  color: var(--mango-deep);
}

.faq-icon {
  position: relative;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  margin-top: 2px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: background-color 0.25s ease, border-color 0.25s ease,
    transform 0.25s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 11px;
  height: 1.6px;
  background: var(--ink);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: background-color 0.25s ease, transform 0.25s ease;
}

.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.is-open .faq-icon {
  background: var(--ink);
  border-color: var(--ink);
  transform: rotate(180deg);
}

.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after {
  background: var(--cream);
}

.faq-item.is-open .faq-icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.32s ease;
}

.faq-item.is-open .faq-a {
  grid-template-rows: 1fr;
}

.faq-a-inner {
  overflow: hidden;
}

.faq-a-inner p {
  margin: 0;
  padding: 0 54px 26px 2px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.faq-a-inner p + p {
  padding-top: 10px;
}

/* ============================ 下载 ============================ */
.download-band {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  padding: 64px 60px;
  border-radius: 34px;
  background: var(--ink);
  color: var(--cream);
}

.download-band::before {
  content: "";
  pointer-events: none;
  position: absolute;
  top: -120px;
  right: -60px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(247, 183, 51, 0.34) 0%,
    rgba(247, 183, 51, 0) 70%
  );
}

.download-band::after {
  content: "";
  pointer-events: none;
  position: absolute;
  bottom: -140px;
  left: 18%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 1px dashed rgba(252, 246, 232, 0.16);
}

.download-copy {
  position: relative;
  z-index: 1;
}

.download-copy .section-label {
  color: var(--mango);
}

.download-copy h2 {
  color: var(--cream);
  margin-bottom: 18px;
}

.download-intro {
  margin: 0 0 28px;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(252, 246, 232, 0.72);
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.download-side {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
}

.download-poster {
  margin: 0 0 2px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 22px 44px -24px rgba(0, 0, 0, 0.8);
}

.download-poster svg {
  width: 100%;
  height: auto;
}

.device {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 20px;
  border: 1px solid rgba(252, 246, 232, 0.16);
  border-radius: 14px;
  background: rgba(252, 246, 232, 0.04);
}

.device-name {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 14px;
  font-weight: 600;
}

.device-name svg {
  width: 18px;
  height: 18px;
  color: var(--mango);
}

.device small {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.03em;
  color: rgba(252, 246, 232, 0.5);
}

.download-fine {
  margin: 22px 0 0;
  font-size: 12px;
  color: rgba(252, 246, 232, 0.48);
}

.download-fine a {
  color: rgba(252, 246, 232, 0.8);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============================ 页脚 ============================ */
.site-footer {
  background: #14100c;
  color: rgba(252, 246, 232, 0.68);
  padding: 64px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1.3fr;
  gap: 40px;
}

.footer-brand img {
  height: 44px;
  width: auto;
}

.footer-brand p {
  margin: 18px 0 0;
  max-width: 30em;
  font-size: 13px;
  line-height: 1.9;
  color: rgba(252, 246, 232, 0.52);
}

.footer-col h3 {
  margin: 4px 0 16px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(252, 246, 232, 0.42);
}

.footer-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer-col a {
  font-size: 13.5px;
  color: rgba(252, 246, 232, 0.72);
  transition: color 0.2s ease;
}

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

.keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.keywords a {
  padding: 5px 11px;
  border: 1px solid rgba(252, 246, 232, 0.14);
  border-radius: 999px;
  font-size: 12px;
  color: rgba(252, 246, 232, 0.6);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.keywords a:hover {
  border-color: rgba(247, 183, 51, 0.5);
  color: var(--mango);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(252, 246, 232, 0.1);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: rgba(252, 246, 232, 0.4);
}

.footer-bottom .status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom .status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #6ec08a;
  box-shadow: 0 0 0 4px rgba(110, 192, 138, 0.14);
}

/* ============================ 滚动动效 ============================ */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: opacity, transform;
}

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

/* ============================ 响应式 ============================ */
@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .hero-art {
    min-height: 480px;
    order: 2;
  }

  .hero-cover {
    width: min(330px, 62%);
  }

  .sticker {
    right: 12%;
  }

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

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

  .feature-layout,
  .start-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .feature-figure {
    max-width: 640px;
    margin-inline: auto;
  }

  .step-figure {
    max-width: 560px;
    margin-inline: auto;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .menu-btn {
    display: inline-flex;
  }

  .header-actions .btn {
    display: none;
  }

  .download-band {
    grid-template-columns: 1fr;
    padding: 48px 34px;
    gap: 32px;
  }

  .rhythm-grid {
    grid-template-columns: 1fr;
  }

  .voices-grid {
    grid-template-columns: 1fr;
  }

  .feature-list {
    gap: 0 24px;
  }
}

@media (max-width: 720px) {
  .container {
    width: calc(100% - 36px);
  }

  .hero {
    padding: 118px 0 64px;
  }

  .section {
    padding: 72px 0;
  }

  .hero h1 {
    font-size: clamp(34px, 9.4vw, 46px);
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 14px;
  }

  .hero-art {
    min-height: 420px;
  }

  .hero-cover {
    width: min(300px, 74%);
  }

  .float-card--sync {
    left: -4px;
    top: 8%;
    transform: scale(0.92);
    transform-origin: left top;
  }

  .float-card--cache {
    right: -4px;
    bottom: 8%;
    transform: scale(0.92);
    transform-origin: right bottom;
  }

  .sticker {
    width: 76px;
    height: 76px;
    font-size: 10.5px;
    right: 2%;
  }

  .drama-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 14px;
  }

  .moments-grid {
    grid-template-columns: 1fr;
  }

  .feature-list {
    grid-template-columns: 1fr;
  }

  .playlist-top {
    align-items: flex-start;
  }

  .download-band {
    padding: 40px 24px;
    border-radius: 26px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .faq-q {
    font-size: 15.5px;
    padding: 20px 0;
  }

  .faq-a-inner p {
    padding-right: 16px;
  }

  .step {
    grid-template-columns: 46px 1fr;
    gap: 16px;
  }

  .step-num {
    width: 46px;
    height: 46px;
    font-size: 15px;
  }

  .step::before {
    left: 22px;
    top: 46px;
  }

  .voice {
    padding: 26px 22px 22px;
  }
}

@media (max-width: 420px) {
  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .brand img {
    height: 38px;
  }
}

@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 {
    opacity: 1;
    transform: none;
  }
}