/* ========================================
   Design Tokens (清新风格 - 小红书红)
   ======================================== */
:root {
  --bg: #f5f3ef;
  --bg-2: #ede9e2;
  --primary: #FF2442;
  --primary-2: #FF6B7A;
  --accent: #c9a96e;
  --text: #1f1f1f;
  --text-dim: #6b6b6b;
  --card: #ffffff;
  --card-border: rgba(0,0,0,0.08);
  --max-width: 880px;
  --radius: 14px;
  --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en: "Inter", var(--font-cn);
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3 { font-family: var(--font-en); font-weight: 700; line-height: 1.3; margin: 0; }
p { margin: 0; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-2); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   Hero
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 80px 24px;
  overflow: hidden;
  background: linear-gradient(180deg, #f5f3ef 0%, #ede9e2 100%);
}
.hero__content {
  text-align: center;
  max-width: 720px;
  position: relative;
  z-index: 2;
}
.hero__tag {
  display: inline-block;
  font-family: var(--font-cn);
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 700;
  color: var(--text);
  letter-spacing: 2px;
  margin-bottom: 20px;
  line-height: 1.2;
}
.hero__title {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.2px;
  margin-bottom: 32px;
}
.hero__title .amp {
  color: var(--primary);
  font-style: italic;
  margin: 0 4px;
}
.hero__pills {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.hero__pill {
  display: inline-block;
  font-family: var(--font-cn);
  font-size: 15px;
  font-weight: 500;
  color: var(--primary);
  padding: 8px 20px;
  border: 1px solid rgba(255,36,66,0.3);
  border-radius: 999px;
  background: rgba(255,36,66,0.06);
}
.hero__cta {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  padding: 14px 36px;
  border-radius: 999px;
  transition: transform .2s, box-shadow .2s, background .2s;
}
.hero__cta:hover {
  background: var(--primary-2);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255,36,66,0.35);
}

.hero__glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(255,36,66,0.10) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* ========================================
   流星动效
   ======================================== */
.meteors {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}
.meteor {
  position: absolute;
  top: -10%;
  width: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 6px 2px rgba(255,36,66,0.45);
  opacity: 0;
}
.meteor::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 0;
  width: 120px;
  height: 1px;
  background: linear-gradient(to left, rgba(255,36,66,0.7), rgba(201,169,110,0.45), transparent);
  transform: translateY(-50%);
}

/* 各流星起点与动画延迟 */
.meteor:nth-child(1) { left: 80%; animation: meteor-fall 6s linear infinite; animation-delay: 0s; }
.meteor:nth-child(2) { left: 60%; animation: meteor-fall 7s linear infinite; animation-delay: 2.2s; }
.meteor:nth-child(3) { left: 40%; animation: meteor-fall 5.5s linear infinite; animation-delay: 3.8s; }
.meteor:nth-child(4) { left: 20%; animation: meteor-fall 6.5s linear infinite; animation-delay: 5s; }

@keyframes meteor-fall {
  0% {
    transform: translate(0, 0) rotate(-25deg);
    opacity: 0;
  }
  5% {
    opacity: 1;
  }
  60% {
    opacity: 1;
  }
  100% {
    transform: translate(-700px, 700px) rotate(-25deg);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .meteor { animation: none; opacity: 0; }
}

/* ========================================
   Section (通用)
   ======================================== */
.section {
  padding: 120px 24px;
  position: relative;
  overflow: hidden;
}
.section .container {
  position: relative;
  z-index: 2;
}
.section__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
  margin-bottom: 32px;
  position: relative;
  display: inline-block;
}
.section__title::after {
  content: "";
  position: absolute;
  left: 0; bottom: -10px;
  width: 48px; height: 3px;
  background: var(--primary);
  border-radius: 2px;
}
.section__lead {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-dim);
  line-height: 1.9;
  max-width: 640px;
}

/* 交替背景板块 */
.section--alt {
  background: rgba(0,0,0,0.02);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

/* ========================================
   Cards (我在做什么)
   ======================================== */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color .3s, transform .3s, background .3s;
}
.card:hover {
  border-color: rgba(255,36,66,0.4);
  transform: translateY(-4px);
  background: rgba(255,36,66,0.05);
}
.card__title {
  font-family: var(--font-cn);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.card__desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  margin: 0;
}

/* ========================================
   Contact (找到我)
   ======================================== */
.contact {
  margin-top: 8px;
  max-width: 480px;
}
.contact__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 40px 24px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  transition: border-color .3s, background .3s;
}
.contact__item:hover {
  border-color: rgba(255,36,66,0.4);
  background: rgba(255,36,66,0.05);
}
.contact__icon {
  width: 56px;
  height: 56px;
  fill: var(--primary-2);
  transition: transform .3s, fill .3s;
}
.contact__item:hover .contact__icon {
  transform: scale(1.08);
  fill: var(--primary);
}
.contact__value {
  font-family: var(--font-en);
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: .3px;
}

/* ========================================
   左侧板块导航 (Dot Nav)
   ======================================== */
.dot-nav {
  position: fixed;
  left: 32px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.dot-nav__indicator {
  position: absolute;
  left: 0;
  top: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(255,36,66,0.5);
  transition: transform .45s cubic-bezier(.4,0,.2,1);
  pointer-events: none;
}
.dot-nav__item {
  position: relative;
  display: block;
  width: 10px;
  height: 10px;
}
.dot-nav__dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(0,0,0,0.2);
  transition: background .3s;
}
.dot-nav__item:hover .dot-nav__dot {
  background: rgba(0,0,0,0.4);
}
.dot-nav__label {
  position: absolute;
  left: 22px;
  top: 50%;
  transform: translateY(-50%) translateX(-8px);
  opacity: 0;
  white-space: nowrap;
  font-size: 13px;
  color: var(--text);
  background: rgba(255,255,255,0.95);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 4px 10px;
  pointer-events: none;
  transition: opacity .25s, transform .25s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.dot-nav__item:hover .dot-nav__label {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* ========================================
   Reveal Animation
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s ease, transform .8s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--card-border);
  text-align: center;
  background: var(--bg);
}
.footer p {
  font-size: 14px;
  color: var(--text-dim);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 720px) {
  .hero {
    padding: 60px 24px;
    min-height: 100vh;
  }
  .hero__glow { width: 380px; height: 380px; }

  .section { padding: 80px 24px; }
  .cards { grid-template-columns: 1fr; }
  .dot-nav { display: none; }
}