/* ============================================================
   Fresh Cycle 官网 — 鲜活自然有机风设计系统
   Canvas: #F8F5F0  Primary: #3D8A5A  Ink: #1A1918
   ============================================================ */

:root {
  /* 画布与纸张 */
  --canvas: #F8F5F0;
  --paper: #FFFFFF;
  --paper-warm: #FAF8F4;

  /* 文字层次 */
  --ink: #1A1918;
  --muted: #6D6C6A;
  --soft: #9A9893;

  /* 品牌色系 */
  --sage: #3D8A5A;
  --sage-deep: #2D6B44;
  --sage-tint: #E8F2EC;

  --terracotta: #D08068;
  --terracotta-tint: #FDF4EA;

  --honey: #D4A64A;
  --honey-deep: #B8862E;
  --honey-tint: #FCF6E4;

  --blue: #5B6E96;
  --blue-tint: #E8EDF5;

  /* 线条 */
  --hairline: #EBE9E4;
  --hairline-strong: #D6D4CE;

  /* 阴影 — 带色调的柔和阴影 */
  --shadow-sage: 0 6px 24px -8px rgba(61, 138, 90, 0.12);
  --shadow-sage-lg: 0 16px 48px -12px rgba(61, 138, 90, 0.18);
  --shadow-honey: 0 6px 24px -8px rgba(212, 166, 74, 0.12);
  --shadow-terra: 0 6px 24px -8px rgba(208, 128, 104, 0.12);
  --shadow-blue: 0 6px 24px -8px rgba(91, 110, 150, 0.12);
  --shadow-ink: 0 6px 24px -8px rgba(26, 25, 24, 0.10);
  --shadow-soft: 0 4px 20px -6px rgba(26, 25, 24, 0.08);
  --shadow-pressed: inset 0 1px 0 rgba(255, 255, 255, 0.6);

  /* 圆角 */
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;

  /* 布局 */
  --container: 1200px;
  --motion: cubic-bezier(0.32, 0.72, 0, 1);
  --motion-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
  box-sizing: border-box;
}

[v-cloak] {
  display: none;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  background-color: var(--canvas);
}

[id] {
  scroll-margin-top: 120px;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(61, 138, 90, 0.2);
  color: var(--ink);
}

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

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

/* ============================================================
   页面壳层 + 有机背景光晕
   ============================================================ */

.page-shell {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
}

/* 固定的全局有机背景 — 两个柔和光晕 */
.page-shell::before {
  content: "";
  position: fixed;
  top: -200px;
  right: -200px;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(61, 138, 90, 0.10) 0%, rgba(61, 138, 90, 0.04) 40%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: glow-breath-1 16s ease-in-out infinite;
}

.page-shell::after {
  content: "";
  position: fixed;
  bottom: -300px;
  left: -200px;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 166, 74, 0.08) 0%, rgba(212, 166, 74, 0.03) 40%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: glow-breath-2 20s ease-in-out infinite;
}

@keyframes glow-breath-1 {
  0%, 100% { transform: scale(1) translate(0, 0); opacity: 1; }
  50% { transform: scale(1.12) translate(-20px, 30px); opacity: 0.7; }
}

@keyframes glow-breath-2 {
  0%, 100% { transform: scale(1) translate(0, 0); opacity: 1; }
  50% { transform: scale(1.15) translate(30px, -20px); opacity: 0.6; }
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.noscript-fallback {
  min-height: 100dvh;
  padding: 96px 24px;
}

/* ============================================================
   导航岛 — 毛玻璃胶囊
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  pointer-events: none;
}

.nav-island {
  pointer-events: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: min(1120px, calc(100% - 48px));
  min-height: 64px;
  margin: 20px auto 0;
  padding: 6px 8px 6px 12px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  box-shadow: 0 6px 28px rgba(26, 25, 24, 0.06);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: background-color 400ms var(--motion), box-shadow 400ms var(--motion),
    backdrop-filter 400ms var(--motion);
}

/* 滚动后导航增强毛玻璃 */
.nav-island.is-scrolled {
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 8px 32px rgba(26, 25, 24, 0.10);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 999px;
  color: var(--canvas);
  background: var(--ink);
  font-family: "Outfit", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-text {
  display: grid;
  gap: 0;
  min-width: 0;
}

.brand-text strong {
  color: var(--ink);
  font-family: "Outfit", sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.2;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 400;
  line-height: 1.3;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: transform 400ms var(--motion), color 400ms var(--motion),
    background-color 400ms var(--motion);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
  background-color: rgba(61, 138, 90, 0.08);
  transform: translateY(-1px);
}

.nav-cta {
  gap: 8px;
  padding-right: 6px;
  color: var(--canvas) !important;
  background: var(--ink);
}

.nav-cta:hover {
  background: var(--ink) !important;
  filter: brightness(1.1);
}

.nav-cta i,
.button i {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--sage);
  color: var(--canvas);
  font-style: normal;
  font-size: 0.85rem;
  line-height: 1;
  transition: transform 400ms var(--motion), background-color 400ms var(--motion);
}

.nav-cta:hover i,
.button:hover i,
.button:focus-visible i {
  transform: translateX(3px) translateY(-1px) scale(1.05);
}

.nav-toggle {
  display: none;
}

/* ============================================================
   Hero 首屏
   ============================================================ */

.hero {
  position: relative;
  padding: 150px 0 80px;
  overflow: hidden;
}

/* Hero 专属有机光晕 */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.hero-glow-green {
  top: 40px;
  right: -100px;
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, rgba(61, 138, 90, 0.22) 0%, rgba(61, 138, 90, 0.08) 40%, transparent 70%);
  animation: glow-breath-1 14s ease-in-out infinite;
}

.hero-glow-honey {
  bottom: -100px;
  left: -150px;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(212, 166, 74, 0.16) 0%, rgba(212, 166, 74, 0.05) 40%, transparent 70%);
  animation: glow-breath-2 18s ease-in-out infinite;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 48px;
  align-items: center;
}

.hero-copy,
.hero-stage {
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  margin: 0;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--sage);
  background: var(--sage-tint);
  font-family: "Outfit", sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2, h3, p {
  overflow-wrap: break-word;
  text-wrap: pretty;
}

h1, h2, h3 {
  text-wrap: balance;
  margin: 0;
}

.heading-line {
  display: block;
}

.hero h1 {
  margin-top: 22px;
  font-family: "Noto Sans SC", sans-serif;
  font-size: 4.25rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.hero h1 .heading-line:last-child {
  color: var(--sage);
}

.hero-lede {
  margin-top: 22px;
  max-width: 500px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* 按钮系统 */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 4px 8px 4px 22px;
  border: 0;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform 400ms var(--motion), background-color 400ms var(--motion),
    color 400ms var(--motion), box-shadow 400ms var(--motion), filter 400ms var(--motion);
}

.button:active {
  transform: scale(0.98);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.button-primary {
  color: var(--canvas);
  background: var(--ink);
  box-shadow: 0 8px 20px -8px rgba(26, 25, 24, 0.4);
}

.button-primary:hover {
  box-shadow: 0 12px 28px -8px rgba(26, 25, 24, 0.45);
}

.button-secondary {
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--hairline-strong);
  box-shadow: var(--shadow-soft);
}

.button-secondary i {
  background: var(--ink);
}

.button-card {
  width: 100%;
  margin-top: 24px;
  color: var(--canvas);
  background: var(--sage);
  box-shadow: 0 8px 20px -8px rgba(61, 138, 90, 0.4);
}

.button-card:hover {
  box-shadow: 0 12px 28px -8px rgba(61, 138, 90, 0.45);
}

/* 状态标签行 */

.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.status-row span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--muted);
  background: var(--paper);
  border: 1px solid var(--hairline);
  font-size: 0.78rem;
  font-weight: 400;
}

.status-row span:nth-child(3) {
  color: var(--sage);
  background: var(--sage-tint);
  border-color: transparent;
}

.status-row span:nth-child(4) {
  color: var(--honey-deep);
  background: var(--honey-tint);
  border-color: transparent;
}

/* Hero 设备区 */

.hero-stage {
  position: relative;
  padding: 8px;
}

.device-shell {
  padding: 10px;
  border-radius: 38px;
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: 0 30px 70px -24px rgba(61, 138, 90, 0.20);
}

.device-core {
  min-height: 480px;
  padding: 24px;
  border-radius: 30px;
  background: var(--paper-warm);
  box-shadow: var(--shadow-pressed);
}

.device-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--soft);
  font-family: "Outfit", sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
}

.device-top strong {
  color: var(--sage);
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 700;
}

.priority-card {
  margin-top: 20px;
  padding: 22px;
  border-radius: 20px;
  background: linear-gradient(140deg, var(--sage-tint) 0%, rgba(232, 242, 236, 0.5) 100%);
  border: 1px solid rgba(61, 138, 90, 0.12);
}

.priority-card small {
  color: var(--soft);
  font-family: "Outfit", sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.priority-card h2 {
  margin-top: 6px;
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
}

.priority-card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

.queue-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--paper);
  border: 1px solid var(--hairline);
}

.queue-card span {
  color: var(--ink);
  font-weight: 700;
  font-size: 0.9rem;
}

.queue-card strong {
  color: var(--terracotta);
  font-weight: 500;
  font-size: 0.8rem;
}

/* 队列卡片色调 — data-driven */
.queue-card.tone-terra strong {
  color: var(--terracotta);
}

.queue-card.tone-honey strong {
  color: var(--honey-deep);
}

.queue-card.tone-sage strong {
  color: var(--sage);
}

/* 浮动发布卡片 */

.release-card {
  position: absolute;
  right: 0;
  bottom: 40px;
  width: min(230px, calc(100% - 40px));
  padding: 20px;
  border-radius: 22px;
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: 0 16px 40px -12px rgba(61, 138, 90, 0.22);
  animation: float-card 6s ease-in-out infinite;
}

@keyframes float-card {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.release-card span {
  color: var(--soft);
  font-family: "Outfit", sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.release-card strong {
  display: block;
  margin-top: 4px;
  font-family: "Outfit", sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink);
}

.release-card p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.6;
}

/* Hero 指标行 */

.hero-metrics {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 60px;
}

.metric {
  display: grid;
  gap: 8px;
  min-height: 140px;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
  transition: transform 400ms var(--motion), box-shadow 400ms var(--motion);
}

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

.metric strong {
  font-family: "Outfit", sans-serif;
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.metric:first-child strong {
  color: var(--sage);
}

.metric span {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 400;
}

/* ============================================================
   通用 Section 标题
   ============================================================ */

.section {
  padding: 90px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 32px;
}

.section-head-wide {
  max-width: 920px;
}

.section-head h2,
.release-copy h2,
.ai-panel h2,
.waitlist-copy h2,
.legal-card h2 {
  margin-top: 14px;
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.section-head p,
.release-copy p,
.ai-panel p,
.waitlist-copy p,
.legal-card p,
.community-copy p {
  margin-top: 16px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

/* ============================================================
   产品预览 Gallery
   ============================================================ */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.gallery-card {
  display: flex;
  flex-direction: column;
  min-height: 300px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform 400ms var(--motion), box-shadow 400ms var(--motion);
}

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

.gallery-thumb {
  min-height: 180px;
  display: flex;
  align-items: flex-end;
  padding: 16px;
  border-bottom: 1px solid var(--hairline);
}

.gallery-thumb span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--paper);
  font-size: 0.75rem;
  font-weight: 600;
}

/* 四种渐变主题 */
.gallery-card:nth-child(1) .gallery-thumb {
  background: linear-gradient(135deg, #E8F2EC 0%, #C7E0D4 100%);
}
.gallery-card:nth-child(1) .gallery-thumb span { color: var(--sage); }

.gallery-card:nth-child(2) .gallery-thumb {
  background: linear-gradient(135deg, #FDF4EA 0%, #F0CDBD 100%);
}
.gallery-card:nth-child(2) .gallery-thumb span { color: var(--terracotta); }

.gallery-card:nth-child(3) .gallery-thumb {
  background: linear-gradient(135deg, #FCF6E4 0%, #F0DBA0 100%);
}
.gallery-card:nth-child(3) .gallery-thumb span { color: var(--honey-deep); }

.gallery-card:nth-child(4) .gallery-thumb {
  background: linear-gradient(135deg, #E8EDF5 0%, #C4D0E3 100%);
}
.gallery-card:nth-child(4) .gallery-thumb span { color: var(--blue); }

.gallery-meta {
  padding: 22px 24px 24px;
}

.gallery-meta h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ink);
}

.gallery-meta p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ============================================================
   下载中心
   ============================================================ */

.download-path a {
  color: var(--sage);
  font-weight: 500;
}

.download-path {
  margin-top: 12px;
  color: var(--sage);
  font-size: 0.85rem;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.download-manifest-message {
  grid-column: 1 / -1;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  color: var(--muted);
  text-align: center;
}

.download-shell {
  min-width: 0;
}

.download-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
  transition: transform 400ms var(--motion), box-shadow 400ms var(--motion);
}

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

.download-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.download-top span {
  color: var(--soft);
  font-family: "Outfit", sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.download-top b {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 400;
}

/* iOS — 绿色 */
.accent-sage .download-top b {
  color: var(--sage);
  background: var(--sage-tint);
}
.accent-sage .download-card { box-shadow: var(--shadow-sage); }
.accent-sage .download-card:hover { box-shadow: var(--shadow-sage-lg); }
.accent-sage .button-card { background: var(--sage); }
.accent-sage .download-card li::before { background: var(--sage); }

/* Android — 蜜色 */
.accent-honey .download-top b {
  color: var(--honey-deep);
  background: var(--honey-tint);
}
.accent-honey .download-card { box-shadow: var(--shadow-honey); }
.accent-honey .download-card:hover { box-shadow: 0 16px 48px -12px rgba(212, 166, 74, 0.18); }
.accent-honey .button-card { background: var(--honey-deep); }
.accent-honey .download-card li::before { background: var(--honey); }

/* Web — 灰色 */
.accent-ink .download-top b {
  color: var(--soft);
  background: #F0EFEC;
}
.accent-ink .download-card { box-shadow: var(--shadow-ink); }
.accent-ink .download-card:hover { box-shadow: 0 16px 48px -12px rgba(26, 25, 24, 0.14); }
.accent-ink .button-card { background: var(--ink); }
.accent-ink .download-card li::before { background: var(--ink); }

.download-card h3 {
  margin-top: 20px;
  font-family: "Outfit", sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.05;
  color: var(--ink);
}

.download-card > p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.85rem;
}

.download-card dl {
  display: grid;
  gap: 0;
  margin: 20px 0 0;
}

.download-card dl div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline);
}

.download-card dt {
  color: var(--soft);
  font-family: "Outfit", sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
}

.download-card dd {
  margin: 0;
  color: var(--ink);
  font-family: "Outfit", sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  text-align: right;
}

.download-card ul {
  display: grid;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.download-card li {
  position: relative;
  padding-left: 16px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 400;
  line-height: 1.5;
}

.download-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
}

/* ============================================================
   发布管理
   ============================================================ */

.release-section {
  background: rgba(61, 138, 90, 0.03);
}

.release-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 48px;
  align-items: center;
}

.release-copy {
  min-width: 0;
  align-self: center;
}

.manifest-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.manifest-panel span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--muted);
  background: var(--paper);
  border: 1px solid var(--hairline);
  font-size: 0.78rem;
  font-weight: 400;
}

.backend-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.backend-card {
  min-width: 0;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
  transition: transform 400ms var(--motion), box-shadow 400ms var(--motion);
}

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

.backend-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
}

.backend-card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ============================================================
   能力边界 Proof
   ============================================================ */

.proof-section {
  padding: 48px 0 72px;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.proof-card {
  display: grid;
  gap: 10px;
  min-width: 0;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
  transition: transform 400ms var(--motion), box-shadow 400ms var(--motion);
}

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

.proof-card span {
  color: var(--soft);
  font-size: 0.8rem;
  font-weight: 500;
}

.proof-card strong {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
}

/* ============================================================
   核心功能
   ============================================================ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  min-height: 240px;
  min-width: 0;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
  transition: transform 400ms var(--motion), box-shadow 400ms var(--motion);
}

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

/* 6 张卡片 — 色调轮换 */
.feature-card:nth-child(1) { box-shadow: var(--shadow-sage); }
.feature-card:nth-child(1):hover { box-shadow: var(--shadow-sage-lg); }
.feature-card:nth-child(1) .feature-badge { background: var(--sage-tint); color: var(--sage); }

.feature-card:nth-child(2) { box-shadow: var(--shadow-sage); }
.feature-card:nth-child(2):hover { box-shadow: var(--shadow-sage-lg); }
.feature-card:nth-child(2) .feature-badge { background: var(--sage-tint); color: var(--sage); }

.feature-card:nth-child(3) { box-shadow: var(--shadow-sage); }
.feature-card:nth-child(3):hover { box-shadow: var(--shadow-sage-lg); }
.feature-card:nth-child(3) .feature-badge { background: var(--sage-tint); color: var(--sage); }

.feature-card:nth-child(4) { box-shadow: var(--shadow-honey); }
.feature-card:nth-child(4):hover { box-shadow: 0 16px 48px -12px rgba(212, 166, 74, 0.18); }
.feature-card:nth-child(4) .feature-badge { background: var(--honey-tint); color: var(--honey-deep); }

.feature-card:nth-child(5) { box-shadow: var(--shadow-terra); }
.feature-card:nth-child(5):hover { box-shadow: 0 16px 48px -12px rgba(208, 128, 104, 0.18); }
.feature-card:nth-child(5) .feature-badge { background: var(--terracotta-tint); color: var(--terracotta); }

.feature-card:nth-child(6) { box-shadow: var(--shadow-blue); }
.feature-card:nth-child(6):hover { box-shadow: 0 16px 48px -12px rgba(91, 110, 150, 0.18); }
.feature-card:nth-child(6) .feature-badge { background: var(--blue-tint); color: var(--blue); }

.feature-badge {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  font-family: "Outfit", sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
}

.feature-card h3 {
  margin-top: 18px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
}

.feature-card p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ============================================================
   定价
   ============================================================ */

.pricing-simple-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  max-width: 760px;
  margin: 0 auto;
}

.pricing-simple-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
  transition: transform 400ms var(--motion), box-shadow 400ms var(--motion);
}

.pricing-simple-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sage);
}

.pricing-simple-card.is-current {
  border-color: var(--sage);
  border-width: 2px;
  box-shadow: var(--shadow-sage-lg);
}

.pricing-simple-card.is-upcoming {
  background: var(--paper-warm);
  border-style: dashed;
}

.pricing-simple-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.pricing-simple-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink);
}

.pricing-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.is-current .pricing-badge {
  background: var(--sage-tint);
  color: var(--sage-deep);
}

.is-upcoming .pricing-badge {
  background: var(--honey-tint);
  color: var(--honey-deep);
}

.pricing-simple-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.pricing-simple-card ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.pricing-simple-card li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 400;
  line-height: 1.5;
}

.pricing-simple-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--sage);
}

.is-upcoming .pricing-simple-card li::before,
.is-upcoming li::before {
  background: var(--honey);
}

.pricing-simple-card .button {
  margin-top: auto;
  justify-content: center;
}

/* ============================================================
   可选 AI
   ============================================================ */

.ai-section {
  padding-top: 64px;
}

.ai-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 48px;
  align-items: center;
  padding: 42px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(61, 138, 90, 0.04) 0%, rgba(212, 166, 74, 0.04) 100%), var(--paper-warm);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
}

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

.ai-list li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 400;
  line-height: 1.6;
}

.ai-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--sage);
}

/* ============================================================
   候补入口
   ============================================================ */

.waitlist-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 48px;
  align-items: start;
}

.waitlist-copy {
  min-width: 0;
}

.waitlist-form {
  display: grid;
  gap: 18px;
  min-width: 0;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
}

.waitlist-form label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.85rem;
}

.waitlist-form input,
.waitlist-form select {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  color: var(--ink);
  background: var(--paper-warm);
  transition: border-color 400ms var(--motion), box-shadow 400ms var(--motion);
}

.waitlist-form input:focus,
.waitlist-form select:focus {
  outline: 0;
  border-color: var(--sage);
  box-shadow: 0 0 0 3px rgba(61, 138, 90, 0.12);
}

.waitlist-form p {
  margin: 0;
  color: var(--soft);
  font-size: 0.82rem;
}

/* ============================================================
   FAQ
   ============================================================ */

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.faq-card {
  min-width: 0;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
  transition: transform 400ms var(--motion), box-shadow 400ms var(--motion);
}

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

.faq-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
}

.faq-card p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ============================================================
   社群
   ============================================================ */

.community-panel {
  display: grid;
  gap: 18px;
  padding: 42px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--sage-tint) 0%, rgba(232, 242, 236, 0.4) 100%);
  border: 1px solid rgba(61, 138, 90, 0.12);
  box-shadow: var(--shadow-soft);
}

.community-copy h2 {
  margin-top: 14px;
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
}

.community-copy p {
  margin-top: 14px;
  color: var(--muted);
  max-width: 38rem;
}

.community-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.community-chip {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--hairline);
  font-weight: 500;
  font-size: 0.85rem;
  transition: transform 400ms var(--motion), border-color 400ms var(--motion);
}

.community-chip:hover {
  transform: translateY(-1px);
  border-color: var(--sage);
}

.community-mail {
  color: var(--sage);
}

/* ============================================================
   隐私与支持
   ============================================================ */

.legal-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.legal-card {
  min-width: 0;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
  transition: transform 400ms var(--motion), box-shadow 400ms var(--motion);
}

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

.legal-card a {
  color: var(--sage);
  font-weight: 500;
}

.legal-links {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

/* ============================================================
   页脚
   ============================================================ */

.site-footer {
  padding: 40px 0 56px;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  border-top: 1px solid var(--hairline);
  padding-top: 24px;
}

.footer-inner strong {
  color: var(--ink);
  font-weight: 700;
}

.footer-inner p {
  margin: 4px 0 0;
  font-size: 0.85rem;
}

.site-footer a {
  color: var(--ink);
  font-weight: 500;
}

/* ============================================================
   滚动入场动画
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  filter: blur(6px);
  transition: opacity 800ms var(--motion), transform 800ms var(--motion),
    filter 800ms var(--motion);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

/* Hero 元素入场 — 更慢更优雅 */
.hero .reveal {
  transition-duration: 1200ms;
}

/* 数字计数动画 */
.metric strong {
  transition: opacity 600ms var(--motion);
}

.metric.is-counted strong {
  opacity: 1;
}

/* ============================================================
   下载页面专用（保留兼容）
   ============================================================ */

.download-page-main {
  padding-top: 36px;
}

.download-route-section {
  padding-top: 140px;
  padding-bottom: 72px;
}

.download-route-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.56fr);
  gap: 42px;
  align-items: end;
}

.download-route-hero h1 {
  max-width: 820px;
  margin: 18px 0 0;
  color: var(--ink);
  font-size: 3.8rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.download-route-hero a,
.route-panel a,
.backend-card a {
  color: var(--sage);
  font-weight: 500;
}

.static-nav {
  pointer-events: auto;
}

.static-nav-links {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.static-nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: transform 400ms var(--motion), color 400ms var(--motion),
    background-color 400ms var(--motion);
}

.static-nav-links a:hover,
.static-nav-links a:focus-visible,
.static-nav-links a[aria-current="page"] {
  color: var(--ink);
  background-color: rgba(61, 138, 90, 0.08);
  transform: translateY(-1px);
}

.route-panel {
  padding: 8px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-soft);
}

.route-panel span,
.route-panel p {
  display: block;
  margin: 0;
  padding: 0 22px;
  color: var(--muted);
}

.route-panel span {
  padding-top: 22px;
  font-size: 0.75rem;
  font-weight: 600;
}

.route-panel strong {
  display: block;
  margin: 6px 0 10px;
  padding: 0 22px;
  color: var(--ink);
  font-family: "Outfit", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
}

.route-panel p {
  padding-bottom: 22px;
}

.route-panel code {
  color: var(--sage);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.92em;
  font-weight: 600;
}

/* ============================================================
   响应式
   ============================================================ */

@media (max-width: 1080px) {
  .hero h1 {
    font-size: 3.5rem;
  }

  .section-head h2,
  .ai-panel h2,
  .waitlist-copy h2,
  .legal-card h2 {
    font-size: 2.3rem;
  }

  .hero-grid,
  .waitlist-grid,
  .legal-grid,
  .ai-panel {
    grid-template-columns: 1fr;
  }

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

  .ai-panel {
    gap: 24px;
  }
}

@media (max-width: 820px) {
  [id] {
    scroll-margin-top: 96px;
  }

  .container {
    width: min(100% - 32px, var(--container));
  }

  .nav-island {
    width: min(100% - 24px, var(--container));
    min-height: 60px;
    margin-top: 12px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 0.75rem;
  }

  .brand-text strong {
    font-size: 0.88rem;
  }

  .brand-text small {
    font-size: 0.68rem;
  }

  .nav-toggle {
    position: relative;
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    flex: 0 0 auto;
    border: 0;
    border-radius: 999px;
    color: var(--ink);
    background: var(--paper-warm);
    border: 1px solid var(--hairline);
    transition: transform 400ms var(--motion);
  }

  .nav-toggle span {
    position: absolute;
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    transition: transform 400ms var(--motion);
  }

  .nav-toggle span:first-child {
    transform: translateY(-4px);
  }

  .nav-toggle span:last-child {
    transform: translateY(4px);
  }

  .nav-toggle.is-open span:first-child {
    transform: rotate(45deg);
  }

  .nav-toggle.is-open span:last-child {
    transform: rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    left: 16px;
    right: 16px;
    top: 80px;
    display: grid;
    gap: 6px;
    padding: 20px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 20px 50px -20px rgba(26, 25, 24, 0.15);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    opacity: 0;
    transform: translateY(-14px) scale(0.96);
    pointer-events: none;
    transition: opacity 400ms var(--motion), transform 400ms var(--motion);
  }

  .site-nav.is-open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
  }

  .site-nav a {
    justify-content: flex-start;
    min-height: 48px;
    padding: 0 16px;
    color: var(--ink);
    background: var(--paper-warm);
    border: 1px solid var(--hairline);
    opacity: 0;
    transform: translateY(10px);
  }

  .site-nav .nav-cta {
    margin-top: 4px;
    justify-content: space-between;
    color: var(--canvas);
    background: var(--ink);
    border-color: var(--ink);
  }

  .site-nav.is-open a {
    opacity: 1;
    transform: translateY(0);
  }

  .site-nav.is-open a:nth-child(1) { transition-delay: 60ms; }
  .site-nav.is-open a:nth-child(2) { transition-delay: 100ms; }
  .site-nav.is-open a:nth-child(3) { transition-delay: 140ms; }
  .site-nav.is-open a:nth-child(4) { transition-delay: 180ms; }
  .site-nav.is-open a:nth-child(5) { transition-delay: 220ms; }
  .site-nav.is-open a:nth-child(6) { transition-delay: 260ms; }

  .static-nav {
    align-items: flex-start;
    border-radius: 28px;
  }

  .static-nav-links {
    flex-wrap: wrap;
    justify-content: flex-end;
    max-width: 54%;
  }

  .static-nav-links a {
    min-height: 36px;
    padding: 0 11px;
    font-size: 0.8rem;
  }

  .hero {
    padding: 120px 0 64px;
  }

  .section {
    padding: 72px 0;
  }

  .hero-grid {
    gap: 32px;
  }

  .hero h1 {
    font-size: 2.8rem;
  }

  .download-route-section {
    padding-top: 120px;
    padding-bottom: 58px;
  }

  .download-route-hero h1 {
    max-width: 620px;
    font-size: 2.6rem;
  }

  .section-head h2,
  .ai-panel h2,
  .waitlist-copy h2,
  .legal-card h2 {
    font-size: 2rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .button {
    justify-content: space-between;
  }

  .device-core {
    min-height: 400px;
    padding: 20px;
  }

  .release-card {
    position: static;
    width: auto;
    margin: -20px 12px 12px;
    animation: none;
  }

  .hero-metrics,
  .download-grid,
  .feature-grid,
  .faq-grid,
  .pricing-simple-grid {
    grid-template-columns: 1fr;
  }

  .download-card h3 {
    font-size: 1.8rem;
  }

  .ai-panel {
    padding: 28px;
  }

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

@media (max-width: 480px) {
  .container {
    width: min(100% - 24px, var(--container));
  }

  .hero {
    padding-top: 110px;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .download-route-hero h1 {
    font-size: 2.2rem;
  }

  .static-nav {
    display: grid;
    gap: 12px;
    border-radius: 24px;
  }

  .static-nav-links {
    justify-content: flex-start;
    max-width: 100%;
  }

  .section-head h2,
  .release-copy h2,
  .ai-panel h2,
  .waitlist-copy h2,
  .legal-card h2 {
    font-size: 1.7rem;
  }

  .community-copy h2 {
    font-size: 1.5rem;
  }

  .download-card,
  .backend-card,
  .proof-card,
  .feature-card,
  .faq-card,
  .legal-card,
  .waitlist-form {
    padding: 22px;
  }

  .priority-card h2 {
    font-size: 1.4rem;
  }

  .metric strong {
    font-size: 2.4rem;
  }
}

/* ============================================================
   减弱动画偏好
   ============================================================ */

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

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }

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

  .page-shell::before,
  .page-shell::after,
  .hero-glow,
  .release-card {
    animation: none !important;
  }
}