:root {
  color-scheme: dark;
  --ink: #f8fafc;
  --muted: #94a3b8;
  --soft: #0b120c;
  --surface: #0a0d0a;
  --line: rgba(255, 255, 255, 0.08);
  --green: #22c55e;
  --green-deep: #f8fafc;
  --mint: rgba(34, 197, 94, 0.12);
  --amber: #f59e0b;
  --sun: #fbbf24;
  --clay: #1e293b;
  --shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.6);
  --shadow-hover: 0 20px 60px -15px rgba(34, 197, 94, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #030703;
  color: var(--ink);
  font-family: 'Inter', ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--green-deep);
}

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

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

.skip-link {
  position: absolute;
  left: 24px;
  top: -80px;
  z-index: 30;
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--ink);
  color: #ffffff;
  transition: top 160ms ease;
}

.skip-link:focus {
  top: 16px;
}

/* 导航毛玻璃质感 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(3, 7, 3, 0.75);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  transition: background-color 0.3s;
}

.nav-shell,
.section-shell,
.footer-shell {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
}

.nav-shell {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand-link,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  color: var(--green-deep);
}

.brand-link img,
.footer-brand img {
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(35, 108, 58, 0.18);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.brand-link:hover img {
  transform: rotate(5deg) scale(1.05);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.nav-links a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  position: relative;
  transition: color 0.25s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--green);
  transition: width 0.25s;
}

.nav-links a:hover {
  color: var(--green);
}

.nav-links a:hover::after {
  width: 100%;
}

.language-switch {
  min-width: 56px;
  justify-content: center;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink) !important;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
  transition: all 0.25s !important;
}

.language-switch::after {
  display: none !important;
}

.language-switch:hover {
  border-color: var(--green);
  background-color: var(--soft);
  transform: translateY(-1px);
}

/* Hero 与大厂风流体环境光 */
.hero-section {
  position: relative;
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  padding: 80px 0;
  background: #030703;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.15) 0%, rgba(16, 185, 129, 0.08) 40%, rgba(34, 197, 94, 0.02) 75%, transparent 100%);
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  animation: glow-move 20s infinite alternate ease-in-out;
}

@keyframes glow-move {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(-15%, 10%) scale(1.2);
  }
}

.hero-shell {
  position: relative;
  z-index: 1;
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 0.8fr);
  align-items: center;
  gap: 64px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 12px;
  margin-bottom: 20px;
  color: var(--green);
  background: rgba(34, 197, 94, 0.12);
  border-radius: 20px;
  font-size: 11px;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 0;
  font-size: 68px;
  line-height: 1.05;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #ffffff 30%, #86efac 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lede {
  max-width: 620px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 38px;
}

.button-primary,
.button-secondary {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 800;
  white-space: nowrap;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.button-primary {
  background: var(--green);
  color: #030703;
  box-shadow: 0 12px 28px rgba(34, 197, 94, 0.25);
}

.button-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 16px 36px rgba(34, 197, 94, 0.4);
  background: #4ade80;
}

.button-secondary {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.button-secondary:hover {
  transform: translateY(-2px) scale(1.02);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 28px rgba(0,0,0,0.3);
}

/* 核心指标微型毛玻璃卡片 */
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(110px, 1fr));
  gap: 16px;
  margin: 48px 0 0;
}

.hero-metrics div {
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-metrics div:hover {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: rgba(34, 197, 94, 0.25);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(34, 197, 94, 0.1);
}

.hero-metrics dt {
  margin-bottom: 6px;
  font-size: 26px;
  line-height: 1;
  font-weight: 850;
  color: var(--green);
}

.hero-metrics dd {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

/* App 视觉展示 (3D hover float) */
.product-visual {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-visual::before {
  content: '';
  position: absolute;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.12) 0%, transparent 70%);
  filter: blur(40px);
  z-index: 0;
  pointer-events: none;
}

.phone-frame {
  position: relative;
  z-index: 1;
  width: min(350px, 100%);
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 40px;
  background: #090e09;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.8);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.6s;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

.phone-frame:hover {
  transform: translateY(-20px) rotate(-1deg) scale(1.02);
  box-shadow: 0 35px 70px rgba(34, 197, 94, 0.12);
  border-color: rgba(34, 197, 94, 0.3);
}

.phone-frame img {
  width: 100%;
  aspect-ratio: 0.75;
  object-fit: cover;
  border-radius: 32px;
}

.media-slot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px dashed rgba(34, 197, 94, 0.2);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.03), rgba(242, 186, 73, 0.02));
}

.hero-image-slot {
  width: 100%;
  aspect-ratio: 0.75;
  border-radius: 32px;
  border: none;
}

/* AI 教练浮动芯片与绿色呼吸灯 */
.coach-chip {
  position: absolute;
  right: -20px;
  bottom: 60px;
  min-width: 250px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 48px rgba(12, 15, 13, 0.12);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.coach-chip:hover {
  transform: translate(-6px, -4px) scale(1.02);
  box-shadow: 0 28px 56px rgba(12, 15, 13, 0.18);
}

.avatar-slot-img {
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

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

.coach-chip strong {
  display: block;
  font-size: 15px;
  font-weight: 800;
  color: var(--green-deep);
}

.status-text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin-top: 2px;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-ring 2s infinite cubic-bezier(0.66, 0, 0, 1);
}

@keyframes pulse-ring {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

/* 段落与大厂标题样式 */
.section-block {
  padding: 120px 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 48px;
}

.section-heading h2,
.intelligence-grid h2 {
  margin: 0;
  font-size: 48px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 40%, #86efac 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-heading p,
.intelligence-copy p,
.page-hero p {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.7;
}

/* 交互卡片弹性设计 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.feature-card,
.use-case-item,
.trust-item,
.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.4s;
}

.feature-card:hover,
.use-case-item:hover,
.trust-item:hover,
.faq-item:hover {
  transform: translateY(-6px);
  border-color: rgba(34, 197, 94, 0.3);
  box-shadow: 0 20px 40px rgba(34, 197, 94, 0.08);
  background-color: rgba(255, 255, 255, 0.05);
}

.feature-card {
  min-height: 320px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(34, 197, 94, 0.15);
  color: var(--green);
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  font-weight: 900;
}

.feature-icon.accent {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
}

.feature-icon.warm {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
}

.feature-card h3 {
  margin: auto 0 12px;
  font-size: 25px;
  line-height: 1.2;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

/* 使用场景 & 条款条 */
.use-case-section {
  background: #060906;
}

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

.use-case-item,
.trust-item {
  min-height: 260px;
  padding: 28px;
}

.use-case-item span {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  margin-bottom: 36px;
  border-radius: 10px;
  background: rgba(34, 197, 94, 0.12);
  color: var(--green);
  font-family: 'Outfit', sans-serif;
  font-size: 13px;
  font-weight: 900;
}

.use-case-item h3,
.trust-item h3 {
  margin: 0 0 12px;
  font-size: 21px;
  line-height: 1.3;
}

.use-case-item p,
.trust-item p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

/* 核心能量带 */
.intelligence-band {
  padding: 100px 0;
  background: var(--green-deep);
  color: #f7faf5;
}

.intelligence-band h2 {
  color: #ffffff;
}

.intelligence-band .eyebrow {
  color: var(--sun);
  background: rgba(242, 186, 73, 0.15);
}

.intelligence-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 56px;
  align-items: center;
}

.intelligence-copy p {
  color: #d2ded0;
  font-size: 20px;
  line-height: 1.65;
}

.signal-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.signal-row span {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border: 1px solid rgba(242, 186, 73, 0.25);
  border-radius: 20px;
  color: var(--sun);
  background: rgba(242, 186, 73, 0.08);
  font-size: 13px;
  font-weight: 750;
  transition: all 0.3s;
}

.signal-row span:hover {
  background: rgba(242, 186, 73, 0.18);
  transform: translateY(-1px);
}

.article-band {
  background: #030703;
}

.trust-section {
  background: #060906;
}

.trust-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 48px;
  align-items: start;
}

.trust-shell .section-heading {
  margin-bottom: 0;
}

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

.trust-item {
  min-height: 270px;
}

.split-heading {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.text-link {
  color: var(--green);
  font-size: 15px;
  font-weight: 800;
  transition: opacity 0.2s;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--green);
}

.text-link:hover {
  opacity: 0.85;
}

/* 博客文章卡片设计 */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.article-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.article-card-image-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 1.6;
  overflow: hidden;
  background: var(--clay);
  border-bottom: 1px solid var(--line);
}

.article-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.article-card:hover .article-card-img {
  transform: scale(1.06);
}

.article-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-card-meta,
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-card-meta span + span::before,
.article-meta span + span::before {
  content: "";
  width: 4px;
  height: 4px;
  display: inline-block;
  margin: 0 8px 2px 0;
  border-radius: 50%;
  background: currentColor;
}

.article-card h3 {
  margin: 12px 0 10px;
  font-size: 22px;
  line-height: 1.25;
  color: var(--green-deep);
  flex-grow: 0;
}

.article-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  flex-grow: 1;
}

.page-hero {
  padding: 96px 0 64px;
  background: linear-gradient(135deg, #030703 0%, #060906 100%);
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  max-width: 860px;
  font-size: 60px;
  margin: 12px 0 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.breadcrumb a {
  color: var(--green);
  transition: opacity 0.2s;
}

.breadcrumb a:hover {
  opacity: 0.8;
}

.breadcrumb-separator {
  color: #9aa59b;
}

.article-breadcrumb-shell {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
  padding-top: 48px;
}

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

/* 文章详情页优化 */
.article-detail {
  background: #050906; /* 更加柔和的暗绿黑色背景，护眼且具高质感 */
}

.article-breadcrumb-shell {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
  padding-top: 40px;
}

.article-hero {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
  padding: 56px 0 48px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  align-items: center;
  gap: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
}

.article-meta span:not(:last-child)::after {
  content: "•";
  margin-left: 12px;
  color: rgba(255, 255, 255, 0.25);
  font-size: 10px;
}

.article-hero-copy h1 {
  margin: 0;
  font-size: 46px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.article-hero-copy p {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.article-hero-image-wrapper {
  width: 100%;
  aspect-ratio: 1.6;
  overflow: hidden;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.article-hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.article-hero-image-wrapper:hover .article-hero-image {
  transform: scale(1.03);
}

.article-layout {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
  padding: 56px 0 120px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 80px;
}

.article-body {
  font-size: 18px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88) !important; /* 强制覆盖容器文字颜色 */
  max-width: 680px; /* 严格限制阅读行宽，避免视线水平移动跨度过大导致疲劳 */
}

/* 强制重置并覆盖富文本中可能混杂的暗色内联样式 */
.article-body p,
.article-body span,
.article-body div,
.article-body li,
.article-body font {
  color: rgba(255, 255, 255, 0.88) !important;
}

.article-body a,
.article-body a span {
  color: var(--green) !important;
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1.5px solid rgba(34, 197, 94, 0.3);
  padding: 0 2px 2px;
  transition: all 0.2s ease;
}

.article-body a:hover,
.article-body a:hover span {
  color: #ffffff !important;
  background: rgba(34, 197, 94, 0.15);
  border-bottom-color: var(--green);
  border-radius: 4px;
}

.article-body strong,
.article-body strong span,
.article-body strong div {
  color: #ffffff !important; /* 粗体字使用纯白，拉开与普通文字的视觉对比度 */
  font-weight: 700;
}

.article-body h2 {
  margin: 56px 0 24px;
  font-size: 28px;
  line-height: 1.3;
  color: #ffffff;
  letter-spacing: -0.02em;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-body h3 {
  margin: 40px 0 18px;
  font-size: 22px;
  line-height: 1.35;
  color: #ffffff;
}

.article-body blockquote {
  margin: 36px 0;
  padding: 24px 28px;
  background: rgba(34, 197, 94, 0.03);
  border-left: 4px solid var(--green);
  border-top-right-radius: 16px;
  border-bottom-right-radius: 16px;
  font-style: italic;
  color: rgba(255, 255, 255, 0.95);
  box-shadow: inset 2px 0 10px rgba(0, 0, 0, 0.2);
}

.article-body blockquote p {
  margin: 0;
  line-height: 1.8;
}

.article-body ul {
  list-style: none; /* 移除默认圆点 */
  margin: 0 0 28px;
  padding-left: 4px;
}

.article-body ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 14px;
  line-height: 1.75;
}

.article-body ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--green); /* 精致的发光翠绿圆点 */
}

.article-body ol {
  margin: 0 0 28px;
  padding-left: 24px;
}

.article-body ol li {
  margin-bottom: 14px;
  line-height: 1.75;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  margin: 40px 0;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.article-body pre {
  background: #0b100d;
  color: #e2f7e7;
  padding: 24px;
  border-radius: 16px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
  line-height: 1.6;
  margin: 32px 0;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.article-body code {
  background: rgba(34, 197, 94, 0.08);
  color: var(--green);
  padding: 4px 8px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
  font-weight: 600;
}

.article-body pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
  font-weight: inherit;
}

/* 文章详情页 App 下载推广横幅 (大厂级非对称 3D 悬浮卡片) */
.premium-cta-card {
  position: relative;
  margin-top: 80px;
  padding: 60px 40px;
  border-radius: 36px;
  /* 极深黑色底层，模拟顶级工艺的黑玻璃 */
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  box-shadow: 
    0 40px 80px -20px rgba(0, 0, 0, 0.9),
    inset 0 1px 2px rgba(255, 255, 255, 0.15),
    inset 0 -1px 2px rgba(255, 255, 255, 0.05); /* 上下边缘高光抛光 */
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 高级胶片噪点与内部光感遮罩 */
.premium-cta-card::before {
  content: "";
  position: absolute;
  inset: 0;
  /* 使用高频点阵模拟暗光噪点，并混合两束极微弱的对角线聚光灯 */
  background-image: 
    radial-gradient(circle at 10% 10%, rgba(255,255,255,0.03) 0%, transparent 40%),
    radial-gradient(circle at 90% 90%, rgba(34,197,94,0.04) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
  z-index: 1;
  pointer-events: none;
}

.premium-cta-card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 
    0 50px 100px -20px rgba(0, 0, 0, 1),
    0 0 60px 10px rgba(56, 189, 248, 0.05),
    inset 0 1px 2px rgba(255, 255, 255, 0.25);
}

/* 绚丽极光 (Aurora Glow) */
.cta-glow-bg {
  position: absolute;
  top: 50%;
  right: -20%;
  transform: translateY(-50%);
  width: 800px;
  height: 800px;
  background: 
    radial-gradient(circle at 30% 40%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(34, 197, 94, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(167, 139, 250, 0.06) 0%, transparent 60%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
  transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1), opacity 1s ease;
  opacity: 0.8;
}

.premium-cta-card:hover .cta-glow-bg {
  transform: translateY(-50%) scale(1.15) rotate(10deg);
  opacity: 1;
}

.cta-content-layout {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  z-index: 2;
}

.cta-text-area {
  flex: 1 1 60%;
  text-align: left;
}

.cta-eyebrow {
  display: inline-block;
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #f8fafc;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 8px 18px;
  border-radius: 9999px;
  margin-bottom: 28px;
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.1);
}

.cta-title {
  font-size: 42px;
  font-weight: 800;
  /* 高冷银色金属渐变 */
  background: linear-gradient(180deg, #ffffff 0%, rgba(255, 255, 255, 0.6) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0 0 16px;
  letter-spacing: -0.03em;
  line-height: 1.1;
  border-bottom: none !important;
  padding-bottom: 0 !important;
}

.cta-desc {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.55);
  max-width: 460px;
  margin: 0 0 40px 0;
}

.cta-actions {
  display: flex;
  justify-content: flex-start;
}

.cta-visual-area {
  flex: 0 0 35%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  perspective: 1000px;
}

.cta-floating-icon {
  width: 150px;
  height: 150px;
  border-radius: 36px;
  box-shadow: 
    0 30px 60px rgba(0, 0, 0, 0.8), 
    inset 0 1px 2px rgba(255, 255, 255, 0.4),
    inset 0 -1px 2px rgba(255, 255, 255, 0.1),
    0 0 40px rgba(56, 189, 248, 0.2);
  animation: float3D 8s ease-in-out infinite;
  z-index: 2;
  transform-style: preserve-3d;
}

.cta-icon-shadow {
  width: 110px;
  height: 12px;
  background: rgba(0, 0, 0, 0.8);
  border-radius: 50%;
  margin-top: 36px;
  filter: blur(10px);
  animation: shadowPulse 8s ease-in-out infinite;
}

@keyframes float3D {
  0%, 100% { transform: translateY(0) rotateX(4deg) rotateY(-4deg); }
  50% { transform: translateY(-20px) rotateX(-4deg) rotateY(4deg); }
}

@keyframes shadowPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(0.85); opacity: 0.2; }
}

/* 响应式降级 */
@media (max-width: 768px) {
  .cta-content-layout {
    flex-direction: column-reverse;
    text-align: center;
    gap: 40px;
  }
  .cta-text-area {
    text-align: center;
  }
  .cta-desc {
    margin-left: auto;
    margin-right: auto;
  }
  .cta-actions {
    justify-content: center;
  }
  .cta-visual-area {
    margin-bottom: 20px;
  }
  .cta-glow-bg {
    right: 50%;
    transform: translate(50%, -50%);
  }
  .premium-cta-card:hover .cta-glow-bg {
    transform: translate(50%, -50%) scale(1.1) rotate(5deg);
  }
}


.article-aside {
  position: sticky;
  top: 120px;
  align-self: start;
  padding-left: 36px;
  border-left: 1px solid var(--line);
}

.article-aside h2 {
  margin: 0 0 20px;
  font-size: 20px;
}

.compact-links {
  display: grid;
  gap: 16px;
}

.compact-links a {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.25s;
}

.compact-links a:hover {
  border-color: var(--green);
}

.compact-links span {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
}

.compact-links strong {
  display: block;
  font-size: 15px;
  line-height: 1.4;
  color: var(--green-deep);
}

.empty-state {
  grid-column: 1 / -1;
  min-height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  color: var(--muted);
  text-align: center;
  font-size: 15px;
}

.faq-section {
  background: #030703;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.faq-item {
  min-height: 230px;
  padding: 28px;
}

.faq-item h3 {
  margin: 0 0 12px;
  font-size: 21px;
  line-height: 1.35;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.not-found {
  min-height: 56vh;
  display: flex;
  align-items: center;
}

.not-found .button-primary {
  margin-top: 28px;
}

.site-footer {
  padding: 72px 0;
  border-top: 1px solid var(--line);
  background: #090e0a;
  color: #e2f7e7;
}

.footer-shell {
  display: flex;
  justify-content: space-between;
  gap: 48px;
}

.site-footer p {
  max-width: 500px;
  margin: 16px 0 0;
  color: #92a294;
  font-size: 14px;
  line-height: 1.65;
}

.footer-links {
  display: flex;
  gap: 24px;
  align-items: center;
  color: #f7faf5;
  font-size: 14px;
  font-weight: 700;
}

.footer-links a:hover {
  color: var(--sun);
}

/* 动效核心：Reveal 渐入动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* 多卡片依次延迟加载 */
.feature-grid .reveal:nth-child(1) { transition-delay: 0.1s; }
.feature-grid .reveal:nth-child(2) { transition-delay: 0.2s; }
.feature-grid .reveal:nth-child(3) { transition-delay: 0.3s; }

.use-case-grid .reveal:nth-child(1) { transition-delay: 0.05s; }
.use-case-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.use-case-grid .reveal:nth-child(3) { transition-delay: 0.15s; }
.use-case-grid .reveal:nth-child(4) { transition-delay: 0.2s; }

.trust-grid .reveal:nth-child(1) { transition-delay: 0.05s; }
.trust-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.trust-grid .reveal:nth-child(3) { transition-delay: 0.15s; }

.faq-grid .reveal:nth-child(1) { transition-delay: 0.05s; }
.faq-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.faq-grid .reveal:nth-child(3) { transition-delay: 0.15s; }

.article-grid .reveal:nth-child(1) { transition-delay: 0.05s; }
.article-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.article-grid .reveal:nth-child(3) { transition-delay: 0.15s; }

/* 响应式媒体查询优化 */
@media (max-width: 1024px) {
  .hero-shell,
  .article-hero,
  .intelligence-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-glow {
    width: 80vw;
    height: 80vw;
  }

  .hero-copy h1,
  .page-hero h1 {
    font-size: 54px;
  }

  .hero-lede,
  .section-heading p,
  .intelligence-copy p,
  .page-hero p {
    margin: 20px auto 0;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-metrics {
    justify-content: center;
  }

  .product-visual {
    min-height: 520px;
  }

  .coach-chip {
    right: 50%;
    transform: translateX(50%);
    bottom: 20px;
  }
  
  .coach-chip:hover {
    transform: translate(50%, -4px) scale(1.02);
  }

  .feature-grid,
  .article-grid,
  .index-grid,
  .faq-grid,
  .use-case-grid,
  .trust-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-shell {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .trust-shell .section-heading {
    margin-bottom: 24px;
  }

  .article-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .article-aside {
    position: static;
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 36px;
  }
}

@media (max-width: 720px) {
  .nav-shell,
  .section-shell,
  .footer-shell,
  .hero-shell,
  .article-hero,
  .article-layout,
  .article-breadcrumb-shell {
    width: min(100% - 32px, 1160px);
  }

  .nav-shell {
    min-height: 72px;
  }

  .nav-links {
    gap: 12px;
    font-size: 13px;
  }

  /* 移动端部分折叠多余导航以防重叠 */
  .nav-links a:not(.language-switch):nth-child(1),
  .nav-links a:not(.language-switch):nth-child(2),
  .nav-links a:not(.language-switch):nth-child(4) {
    display: none;
  }

  .brand-link span {
    font-size: 16px;
  }

  .hero-copy h1,
  .page-hero h1 {
    font-size: 40px;
  }

  .hero-lede,
  .section-heading p,
  .intelligence-copy p,
  .page-hero p,
  .article-hero-copy p {
    font-size: 16px;
    line-height: 1.65;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .product-visual {
    min-height: 460px;
  }

  .phone-frame {
    width: min(290px, 100%);
  }

  .coach-chip {
    min-width: min(240px, calc(100% - 32px));
  }

  .section-block,
  .article-layout {
    padding: 80px 0;
  }

  .page-hero {
    padding: 72px 0 48px;
  }

  .split-heading,
  .footer-shell {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }

  .feature-grid,
  .article-grid,
  .index-grid,
  .faq-grid,
  .use-case-grid,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 260px;
  }

  .article-card h3,
  .article-card p {
    min-height: auto;
  }

  .article-hero {
    padding-top: 48px;
  }

  .article-hero-copy h1 {
    font-size: 38px;
  }

  .article-body {
    font-size: 16px;
    line-height: 1.75;
  }

  .article-body h2 {
    font-size: 26px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 16px;
  }
}

/* ==========================================================================
   METABOLIC TIMELINE & COACH SANDBOX STYLES
   ========================================================================== */

/* Timeline Section */
.timeline-section {
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

.timeline-container {
  max-width: 960px;
  margin: 60px auto 0;
  position: relative;
  padding: 20px 0;
}

/* Timeline Vertical Line */
.timeline-line {
  position: absolute;
  left: 120px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: rgba(35, 108, 58, 0.08);
  border-radius: 2px;
}

.timeline-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: linear-gradient(to bottom, var(--green), var(--green-deep));
  transition: height 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 10px rgba(50, 169, 87, 0.4);
}

.timeline-steps {
  display: flex;
  flex-direction: column;
  gap: 40px;
  position: relative;
}

.timeline-step {
  display: flex;
  align-items: flex-start;
  position: relative;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.timeline-time {
  width: 90px;
  text-align: right;
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  padding-top: 20px;
  transition: color 0.3s;
}

.timeline-node {
  width: 64px;
  display: flex;
  justify-content: center;
  position: relative;
  padding-top: 18px;
  z-index: 2;
}

.timeline-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--background);
  border: 3px solid rgba(35, 108, 58, 0.2);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline-card {
  flex: 1;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.timeline-tag {
  display: inline-flex;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  color: var(--green-deep);
  background: var(--mint);
  border-radius: 6px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.timeline-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-family: 'Outfit', sans-serif;
}

.timeline-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

/* Active timeline states */
.timeline-step.active .timeline-time {
  color: var(--green-deep);
}

.timeline-step.active .timeline-dot {
  background: var(--green);
  border-color: var(--green-deep);
  transform: scale(1.3);
  box-shadow: 0 0 12px rgba(50, 169, 87, 0.5);
}

.timeline-step.active .timeline-card {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(34, 197, 94, 0.3);
  box-shadow: var(--shadow-hover);
  transform: translateX(6px);
}

/* Sandbox Section */
.sandbox-section {
  background: #030703;
}

.sandbox-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.sandbox-copy h2 {
  font-size: 40px;
  line-height: 1.15;
  margin: 0 0 20px;
}

.sandbox-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 36px;
}

.sandbox-opt-btn {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 18px 24px;
  border-radius: 16px;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--foreground);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.sandbox-opt-btn:hover {
  background: #ffffff;
  border-color: rgba(35, 108, 58, 0.15);
  transform: translateY(-2px);
}

.sandbox-opt-btn.active {
  background: var(--green-deep);
  color: #ffffff;
  border-color: var(--green-deep);
  box-shadow: 0 8px 20px rgba(18, 56, 30, 0.15);
}

/* Sandbox Phone Visual */
.sandbox-phone {
  background: #f7f9f5;
  max-width: 320px;
  margin: 0 auto;
  border: 12px solid var(--foreground);
  border-radius: 36px;
  overflow: hidden;
  height: 480px;
  display: flex;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.metric-dashboard-card {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 28px;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.metric-dashboard-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.05);
}

.intake-card:hover {
  border-color: rgba(34, 197, 94, 0.3);
  box-shadow: 0 20px 40px rgba(34, 197, 94, 0.12);
}

.hydration-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: 0 20px 40px rgba(56, 189, 248, 0.12);
}

.expenditure-card:hover {
  border-color: rgba(249, 115, 22, 0.3);
  box-shadow: 0 20px 40px rgba(249, 115, 22, 0.12);
}

.weight-card:hover {
  border-color: rgba(245, 158, 11, 0.3);
  box-shadow: 0 20px 40px rgba(245, 158, 11, 0.12);
}

.metric-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.metric-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.metric-icon-box.bg-green { background: rgba(34, 197, 94, 0.15); color: #22c55e; }
.metric-icon-box.bg-blue { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.metric-icon-box.bg-orange { background: rgba(249, 115, 22, 0.15); color: #f97316; }
.metric-icon-box.bg-gold { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }

.metric-card-header h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 850;
  color: var(--green-deep);
}

.metric-card-body {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* 进食卡片内部样式 */
.progress-ring-container {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 20px;
}

.progress-ring-bg {
  stroke: rgba(255, 255, 255, 0.06);
}

.progress-ring-bar {
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
  transition: stroke-dashoffset 0.6s ease;
}

.progress-ring-text {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.progress-ring-text .value {
  font-size: 20px;
  font-weight: 900;
  color: var(--green-deep);
  line-height: 1;
}

.progress-ring-text .label {
  font-size: 11px;
  color: var(--muted);
  font-weight: 600;
  margin-top: 2px;
}

.macros-indicator {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.macro-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
}

.macro-label {
  width: 48px;
  color: var(--muted);
}

.bar-bg {
  flex-grow: 1;
  height: 6px;
  background: var(--soft);
  border-radius: 3px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 3px;
}

.bar-fill.carbs { background: var(--amber); }
.bar-fill.protein { background: var(--green); }
.bar-fill.fat { background: #eab308; }

.macro-val {
  width: 36px;
  text-align: right;
  color: var(--ink);
  font-weight: 750;
}

/* 饮水卡片内部样式 */
.hydration-cup-widget {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.water-glass {
  position: relative;
  width: 90px;
  height: 120px;
  border: 3px solid rgba(255, 255, 255, 0.18);
  border-top: none;
  border-radius: 0 0 16px 16px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}

.water-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.18);
  opacity: 0.3;
}

.water-level {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(180deg, #38bdf8 0%, #0284c7 100%);
  transition: height 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.water-level::after {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  top: -140%;
  left: -50%;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 38%;
  animation: water-wave 8s infinite linear;
}

@keyframes water-wave {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.glass-text {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
  z-index: 5;
}

.glass-text .value {
  font-size: 18px;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.glass-text .label {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 700;
  margin-top: 1px;
}

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

.add-water-btn {
  min-height: 38px;
  border-radius: 10px;
  border: none;
  background: var(--green);
  color: #ffffff;
  padding: 0 16px;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.2);
  transition: all 0.3s;
}

.add-water-btn:hover {
  background: #4ade80;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(34, 197, 94, 0.4);
}

.reset-water-btn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
}

.reset-water-btn:hover {
  background: var(--soft);
  color: var(--ink);
}

/* 消耗卡片内部样式 */
.expenditure-metrics {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.exp-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.exp-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 6px solid #ea580c;
  background: rgba(234, 88, 12, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.exp-val {
  font-size: 18px;
  font-weight: 900;
  color: var(--green-deep);
  line-height: 1;
}

.exp-lbl {
  font-size: 9px;
  color: var(--muted);
  font-weight: 700;
}

.exp-info strong {
  display: block;
  font-size: 15px;
  font-weight: 800;
  color: var(--green-deep);
}

.exp-info p {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.steps-progress-wrapper {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.steps-meta {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 750;
  color: var(--muted);
}

.steps-bar {
  height: 8px;
  background: var(--soft);
  border-radius: 4px;
  overflow: hidden;
}

.steps-fill {
  height: 100%;
  background: #ea580c;
  border-radius: 4px;
}

/* 体重卡片内部样式 */
.weight-chart-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.weight-chart {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 6px;
}

.weight-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.weight-meta .meta-item {
  flex: 1;
  background: var(--soft);
  padding: 8px 12px;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
}

.weight-meta .label {
  font-size: 10px;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 2px;
}

.weight-meta .value {
  font-size: 15px;
  font-weight: 900;
}

.val-green { color: var(--green); }
.val-gold { color: var(--amber); }

/* 移动端响应式 */
@media (max-width: 992px) {
  .metrics-dashboard-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 576px) {
  .metrics-dashboard-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .timeline-line {
    left: 20px;
  }
  .timeline-time {
    display: none;
  }
  .timeline-node {
    width: 44px;
    justify-content: flex-start;
    padding-left: 10px;
  }
  .timeline-step.active .timeline-card {
    transform: none;
  }
}

/* Navigation Download Button Styling */
.nav-download-link {
  background: var(--green);
  color: #ffffff !important;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.2);
  transition: all 0.25s !important;
}

.nav-download-link::after {
  display: none !important;
}

.nav-download-link:hover {
  background: #4ade80 !important;
  color: #ffffff !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(34, 197, 94, 0.4);
}

/* ==========================================================================
   App Screenshots Carousel Section
   ========================================================================== */
.screenshots-section {
  background: linear-gradient(180deg, #030703 0%, #080f08 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.screenshots-carousel-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 1000px;
  margin: 48px auto 0;
  padding: 0 60px;
}

.screenshots-container {
  width: 100%;
  overflow: visible;
  mask-image: linear-gradient(to right, transparent, #000 15%, #000 85%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 15%, #000 85%, transparent);
}

.screenshots-track {
  display: flex;
  gap: 32px;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.screenshot-card {
  flex: 0 0 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.5s;
}

.device-mockup {
  position: relative;
  width: 100%;
  aspect-ratio: 0.461;
  border-radius: 36px;
  background: #000000;
  padding: 8px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.device-mockup::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 18px;
  background: #000000;
  border-radius: 9px;
  z-index: 10;
}

.device-mockup img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 28px;
  background: #000000;
}

.screenshot-info {
  margin-top: 24px;
  max-width: 240px;
}

.screenshot-info h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--green-deep);
}

.screenshot-info p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

.screenshot-card:hover .device-mockup {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 25px 50px rgba(34, 197, 94, 0.15);
  border-color: rgba(34, 197, 94, 0.4);
}

.carousel-btn {
  position: absolute;
  top: 40%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--ink);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 10;
}

.carousel-btn:hover {
  background: var(--green);
  color: #030703;
  border-color: var(--green);
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.4);
}

.prev-btn {
  left: 0;
}

.next-btn {
  right: 0;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.carousel-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(35, 108, 58, 0.2);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.carousel-dots .dot.active {
  width: 24px;
  border-radius: 4px;
  background: var(--green);
}

@media (max-width: 768px) {
  .screenshots-carousel-wrapper {
    padding: 0 20px;
  }
  .carousel-btn {
    display: none;
  }
  .screenshots-container {
    mask-image: none;
    -webkit-mask-image: none;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }
  .screenshots-track {
    gap: 16px;
  }
  .screenshot-card {
    flex: 0 0 240px;
  }
}

/* Premium Custom App Store Button */
.premium-download-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 20px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  overflow: hidden;
  backdrop-filter: blur(12px) saturate(120%);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  transition: 
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    border-color 0.3s ease,
    box-shadow 0.3s ease,
    color 0.3s ease;
  cursor: pointer;
}

.premium-download-btn-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 2;
}

.premium-download-btn .apple-icon {
  width: 20px;
  height: 20px;
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.3s ease;
}

.premium-download-btn .btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.15;
}

.premium-download-btn .badge-tag {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  transition: color 0.3s ease;
}

.premium-download-btn .badge-title {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: rgba(255, 255, 255, 0.95);
  transition: color 0.3s ease;
}

/* Shimmer Light effect */
.premium-download-btn .btn-shimmer {
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: skewX(-25deg);
  z-index: 1;
  transition: left 0.6s ease;
}

/* Hover States */
.premium-download-btn:hover {
  transform: translateY(-3px) scale(1.01);
  border-color: rgba(34, 197, 94, 0.4);
  box-shadow: 
    0 12px 20px -10px rgba(0, 0, 0, 0.5), 
    0 0 15px 2px rgba(34, 197, 94, 0.18);
  color: #fff;
}

.premium-download-btn:hover .apple-icon {
  color: #fff;
}

.premium-download-btn:hover .badge-tag {
  color: rgba(255, 255, 255, 0.6);
}

.premium-download-btn:hover .badge-title {
  color: #fff;
}

.premium-download-btn:hover .btn-shimmer {
  left: 150%;
  transition: left 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Active State */
.premium-download-btn:active {
  transform: translateY(-1px) scale(0.99);
  box-shadow: 
    0 6px 10px -5px rgba(0, 0, 0, 0.5), 
    0 0 8px 1px rgba(34, 197, 94, 0.12);
}

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

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