/* ===== 设计令牌 ===== */
:root {
  --color-primary: #FF5A1F;      /* 活力橙 · 主色 */
  --color-primary-600: #E8430D;
  --color-on-primary: #FFFFFF;
  --color-accent: #FF3B30;       /* 热情红 · CTA */
  --color-accent-600: #E11D0F;
  --color-on-accent: #FFFFFF;
  --brand-gradient: linear-gradient(100deg, #FF7A00 0%, #FF5A1F 45%, #FF3B30 100%);
  --color-bg: #FFF7F2;           /* 暖橙白 */
  --color-surface: #FFFFFF;
  --color-fg: #1F1A17;
  --color-muted-fg: #6B6259;
  --color-muted-bg: #FFF0E8;
  --color-border: #FBE2D6;
  --color-band: #26150F;         /* 深暖棕 CTA 背景 */

  --font-head: 'Varela Round', system-ui, sans-serif;
  --font-body: 'Nunito Sans', system-ui, sans-serif;

  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 24px;

  --shadow-sm: 0 2px 8px rgba(255, 90, 31, 0.08);
  --shadow: 0 8px 28px rgba(255, 90, 31, 0.14);
  --shadow-lg: 0 18px 48px rgba(255, 90, 31, 0.18);

  --container: 1160px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-fg);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; margin: 0; }

p { margin: 0; }

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

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

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ===== 按钮 ===== */
.btn {
  --btn-bg: var(--color-primary);
  --btn-fg: var(--color-on-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  padding: 12px 22px;
  border: 2px solid transparent;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  cursor: pointer;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease);
  min-height: 44px;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; }

.btn-primary { --btn-bg: var(--color-primary); background: var(--brand-gradient); }
.btn-primary:hover { filter: brightness(1.05); }
.btn-accent { --btn-bg: var(--color-accent); --btn-fg: var(--color-on-accent); background: var(--brand-gradient); }
.btn-accent:hover { filter: brightness(1.06); }
.btn-ghost { background: transparent; color: var(--color-primary); border-color: var(--color-border); }
.btn-ghost:hover { background: var(--color-surface); }
.btn-ghost-light { background: transparent; color: #fff; border-color: rgba(255,255,255,0.4); }
.btn-ghost-light:hover { background: rgba(255,255,255,0.12); }
.btn-sm { padding: 8px 16px; min-height: 40px; font-size: 0.94rem; }
.btn-lg { padding: 14px 28px; font-size: 1.06rem; }

.eyebrow {
  display: inline-block;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-muted-bg);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 251, 235, 0.82);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.site-header.scrolled { border-color: var(--color-border); box-shadow: var(--shadow-sm); }

.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--color-primary); }
.brand-mark { display: inline-flex; }
.brand-mark img { display: block; width: 34px; height: 34px; border-radius: 8px; object-fit: contain; }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; }
.footer-logo img { display: block; width: 40px; height: 40px; border-radius: 9px; object-fit: contain; }
.brand-name { font-family: var(--font-head); font-size: 1.32rem; color: var(--color-fg); }
.brand-en { font-size: 0.7rem; color: var(--color-muted-fg); margin-left: 4px; letter-spacing: 0.05em; }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links > a:not(.btn) { font-weight: 600; color: var(--color-fg); transition: color 0.15s var(--ease); }
.nav-links > a:not(.btn):hover { color: var(--color-primary); }

.nav-toggle { display: none; background: none; border: none; color: var(--color-fg); cursor: pointer; padding: 8px; }

.mobile-menu { display: none; flex-direction: column; gap: 4px; padding: 12px 24px 20px; border-top: 1px solid var(--color-border); }
.mobile-menu[hidden] { display: none; }
.mobile-menu a:not(.btn) { padding: 12px 8px; font-weight: 600; border-radius: var(--radius-sm); }
.mobile-menu a:not(.btn):hover { background: var(--color-muted-bg); }
.mobile-menu .btn { margin-top: 8px; }

/* ===== Hero ===== */
.hero { padding: 72px 0 88px; overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); margin-bottom: 20px; }
.accent-word { color: var(--color-primary); }
.lead { font-size: 1.15rem; color: var(--color-muted-fg); max-width: 46ch; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-stats { list-style: none; display: flex; gap: 36px; margin: 44px 0 0; padding: 0; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-family: var(--font-head); font-size: 1.7rem; color: var(--color-fg); }
.hero-stats span { font-size: 0.9rem; color: var(--color-muted-fg); }

.hero-visual { display: flex; justify-content: center; }
.hero-card {
  position: relative;
  width: min(100%, 380px);
  aspect-ratio: 1 / 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px;
  background: var(--brand-gradient);
  border: none;
  border-radius: 32px;
  box-shadow: var(--shadow-lg);
  color: #fff;
}
.hero-card p { font-family: var(--font-head); color: #fff; font-size: 1.1rem; }
.hero-glow {
  position: absolute; inset: auto; width: 70%; height: 70%;
  background: radial-gradient(circle, rgba(255,255,255,0.35), transparent 70%);
  filter: blur(24px); z-index: 0; border-radius: 50%;
}
.hero-card > *:not(.hero-glow) { position: relative; z-index: 1; }

/* ===== 通用 section ===== */
.section { padding: 84px 0; }
.section-muted { background: var(--color-muted-bg); }
.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head h2 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); margin-bottom: 12px; }
.section-sub { color: var(--color-muted-fg); font-size: 1.08rem; }

/* ===== 便当格 ===== */
.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.bento-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.bento-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.bento-lg { grid-row: span 2; background: linear-gradient(160deg, #FFFFFF, #FDF3EA); }
.bento-wide { grid-column: span 2; }
.bento-icon, .feature-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: var(--color-muted-bg);
  color: var(--color-primary);
  margin-bottom: 18px;
}
.bento-icon svg, .feature-icon svg { width: 26px; height: 26px; }
.bento-card h3 { font-size: 1.28rem; margin-bottom: 10px; }
.bento-card p { color: var(--color-muted-fg); flex: 1; }
.card-link { margin-top: 16px; font-weight: 700; color: var(--color-primary); transition: gap 0.15s var(--ease); }
.card-link:hover { color: var(--color-primary-600); }

/* ===== 特性网格 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature h3 { font-size: 1.15rem; margin-bottom: 8px; }
.feature p { color: var(--color-muted-fg); font-size: 0.98rem; }

/* ===== 口碑 ===== */
.reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  margin: 0;
}
.stars { color: #E0A100; letter-spacing: 2px; margin-bottom: 14px; }
.review-card blockquote { margin: 0 0 16px; font-size: 1.05rem; line-height: 1.7; }
.review-card figcaption { color: var(--color-muted-fg); font-weight: 600; font-size: 0.94rem; }

/* ===== 底部 CTA ===== */
.cta-band { background: var(--color-band); color: #fff; padding: 80px 0; }
.cta-inner { text-align: center; max-width: 620px; margin: 0 auto; }
.cta-band h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 30px; }
.cta-band .hero-actions { justify-content: center; }

/* ===== 页脚 ===== */
.site-footer { background: var(--color-muted-bg); border-top: 1px solid var(--color-border); padding: 56px 0 28px; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 2fr; gap: 40px; }
.footer-brand p { color: var(--color-muted-fg); margin-top: 12px; max-width: 34ch; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-cols h4 { font-family: var(--font-body); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-muted-fg); margin-bottom: 14px; }
.footer-cols a { display: block; padding: 6px 0; font-weight: 600; transition: color 0.15s var(--ease); }
.footer-cols a:hover { color: var(--color-primary); }
.footer-text { display: block; padding: 6px 0; color: var(--color-muted-fg); font-size: 0.9rem; line-height: 1.6; }
.footer-bottom { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--color-border); color: var(--color-muted-fg); font-size: 0.9rem; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; }
.footer-bottom .beian { color: var(--color-muted-fg); transition: color 0.15s var(--ease); }
.footer-bottom .beian:hover { color: var(--color-primary); }

/* ===== 进场动画 ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento-lg { grid-row: span 1; }
  .bento-wide { grid-column: span 2; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .hero { padding: 48px 0 64px; }
  .hero-stats { gap: 24px; }
  .section { padding: 60px 0; }
  .bento, .feature-grid { grid-template-columns: 1fr; }
  .bento-wide { grid-column: span 1; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}

/* ===== 无障碍：减少动态 ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}