/* ===========================
   臻元科技 zhizhencp.com
   迈阿密复古 Miami Retro
   =========================== */

:root {
  /* 渐变背景色 */
  --color-bg:          #FFF0F5;
  --color-bg-alt:      #F5E6FF;
  --color-bg-card:     #FFFFFF;
  --color-bg-mesh:     linear-gradient(135deg, #FFF0F5 0%, #FDE8EF 25%, #F0E6FF 50%, #E8F4FD 75%, #FFF0F5 100%);

  /* 复古彩虹色板 */
  --color-pink:        #FF6B9D;
  --color-pink-light:  #FFB3D0;
  --color-pink-bg:     rgba(255, 107, 157, 0.08);
  --color-purple:      #C084FC;
  --color-purple-light:#DDA6FF;
  --color-purple-bg:   rgba(192, 132, 252, 0.08);
  --color-cyan:        #22D3EE;
  --color-cyan-bg:     rgba(34, 211, 238, 0.08);
  --color-peach:       #FB923C;
  --color-peach-bg:    rgba(251, 146, 60, 0.08);
  --color-yellow:      #FCD34D;

  /* 文字 */
  --color-text:        #1E1B2E;
  --color-text-muted:  #6B6197;
  --color-text-dim:    #9B93B8;

  /* 边框 */
  --color-border:      rgba(192, 132, 252, 0.2);
  --color-border-light:rgba(192, 132, 252, 0.1);

  /* 字体 — 圆角无衬线 */
  --font-display: 'Nunito', 'Noto Serif SC', sans-serif;
  --font-body:    'Nunito', 'Noto Serif SC', sans-serif;
  --font-cn:      'Noto Serif SC', serif;

  --fs-xs:  0.75rem;
  --fs-sm:  0.875rem;
  --fs-base:1rem;
  --fs-md:  1.125rem;
  --fs-lg:  1.25rem;
  --fs-xl:  1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.75rem;
  --fs-hero:clamp(2.5rem, 5vw, 4.5rem);

  --spacing-xs:  0.5rem;
  --spacing-sm:  1rem;
  --spacing-md:  1.5rem;
  --spacing-lg:  2rem;
  --spacing-xl:  3rem;
  --spacing-2xl: 5rem;
  --spacing-3xl: 8rem;

  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-pill: 50px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* 彩色阴影 */
  --shadow-pink:   0 8px 32px rgba(255, 107, 157, 0.2);
  --shadow-purple: 0 8px 32px rgba(192, 132, 252, 0.2);
  --shadow-cyan:   0 8px 32px rgba(34, 211, 238, 0.15);
  --shadow-card:   0 4px 20px rgba(30, 27, 46, 0.06);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg-mesh);
  background-attachment: fixed;
  overflow-x: hidden;
}

a { color: var(--color-pink); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-purple); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.btn--gold {
  background: linear-gradient(135deg, var(--color-pink), var(--color-purple));
  color: #FFF;
  box-shadow: var(--shadow-pink);
}
.btn--gold:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 40px rgba(255, 107, 157, 0.3);
}
.btn--outline {
  background: var(--color-bg-card);
  color: var(--color-pink);
  border: 2px solid var(--color-pink);
}
.btn--outline:hover {
  background: var(--color-pink-bg);
  color: var(--color-pink);
  transform: translateY(-2px);
}
.btn--lg { padding: 1rem 2.5rem; font-size: var(--fs-base); }

/* --- Eyebrow --- */
.about__eyebrow,
.services__eyebrow,
.facts__eyebrow,
.contact__eyebrow {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-purple);
  margin-bottom: var(--spacing-sm);
}

/* ===========================
   Nav — 圆角胶囊
   =========================== */
.nav {
  position: fixed;
  top: 1rem; left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  width: auto;
  max-width: 95vw;
}
.nav--scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-purple);
}
.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text);
  flex-shrink: 0;
}
.nav__logo:hover { color: var(--color-text); }
.nav__logo-text {
  font-family: var(--font-cn);
  font-size: var(--fs-base);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-pink), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav__links { display: flex; align-items: center; gap: 0.25rem; }
.nav__link {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  transition: all var(--transition);
}
.nav__link:hover {
  color: var(--color-pink);
  background: var(--color-pink-bg);
}
.nav__cta { flex-shrink: 0; }
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 24px; height: 2.5px;
  background: var(--color-pink);
  transition: all var(--transition);
  border-radius: 2px;
}
.nav__hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__hamburger.active span:nth-child(2) { opacity: 0; }
.nav__hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===========================
   Hero — 气泡派对
   =========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: var(--spacing-3xl) var(--spacing-lg);
}
.hero__bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }

/* 浮动气泡 */
.hero__bubble {
  position: absolute;
  border-radius: 50%;
  opacity: 0.5;
  animation: bubbleFloat ease-in-out infinite;
}
.hero__bubble--1 {
  width: 300px; height: 300px;
  top: 5%; left: -5%;
  background: radial-gradient(circle at 30% 30%, var(--color-pink-light), transparent 70%);
  animation-duration: 8s;
}
.hero__bubble--2 {
  width: 200px; height: 200px;
  top: 60%; right: 5%;
  background: radial-gradient(circle at 30% 30%, var(--color-purple-light), transparent 70%);
  animation-duration: 10s;
  animation-delay: -2s;
}
.hero__bubble--3 {
  width: 150px; height: 150px;
  bottom: 10%; left: 15%;
  background: radial-gradient(circle at 30% 30%, #A5F3FC, transparent 70%);
  animation-duration: 7s;
  animation-delay: -4s;
}
.hero__bubble--4 {
  width: 100px; height: 100px;
  top: 20%; right: 20%;
  background: radial-gradient(circle at 30% 30%, #FDE68A, transparent 70%);
  animation-duration: 9s;
  animation-delay: -6s;
}
.hero__bubble--5 {
  width: 180px; height: 180px;
  top: 35%; left: 50%;
  background: radial-gradient(circle at 30% 30%, #FBCFE8, transparent 70%);
  animation-duration: 11s;
  animation-delay: -3s;
}
@keyframes bubbleFloat {
  0%, 100% { transform: translateY(0) translateX(0) scale(1); }
  25%      { transform: translateY(-20px) translateX(10px) scale(1.05); }
  50%      { transform: translateY(-10px) translateX(-10px) scale(0.98); }
  75%      { transform: translateY(-25px) translateX(5px) scale(1.03); }
}
.hero__content { position: relative; z-index: 1; max-width: 800px; }
.hero__eyebrow {
  font-size: var(--fs-sm); font-weight: 700;
  letter-spacing: 0.15em; color: var(--color-purple);
  margin-bottom: var(--spacing-md);
  display: inline-block;
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-pill);
  background: var(--color-purple-bg);
}
.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}
.hero__subtitle {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--spacing-xl);
}
.hero__actions {
  display: flex; align-items: center; justify-content: center;
  gap: var(--spacing-md); flex-wrap: wrap;
}
.hero__scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  font-size: var(--fs-xs); color: var(--color-text-dim);
  animation: pulse 2.5s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 0.8; } }

/* ===========================
   Marquee Bar — 彩色丝带
   =========================== */
.marquee-bar {
  background: linear-gradient(90deg, var(--color-pink), var(--color-purple), var(--color-cyan), var(--color-pink));
  background-size: 200% 100%;
  animation: ribbonShift 8s linear infinite;
  overflow: hidden; padding: 0.85rem 0;
}
@keyframes ribbonShift {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}
.marquee-bar__track {
  display: flex; align-items: center; gap: var(--spacing-lg);
  width: max-content;
  animation: marqueeScroll 20s linear infinite;
}
.marquee-bar__item {
  font-family: var(--font-cn); font-size: var(--fs-md);
  font-weight: 700; color: #FFF; white-space: nowrap;
}
.marquee-bar__dot { color: rgba(255,255,255,0.5); font-size: var(--fs-xs); }
@keyframes marqueeScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* ===========================
   About
   =========================== */
.about { padding: var(--spacing-3xl) 0; }
.about__grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl); align-items: start;
}
.about__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
}
.about__text {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: var(--spacing-lg);
}
.about__text:last-child { margin-bottom: 0; }

/* ===========================
   Services — 彩色卡片
   =========================== */
.services { padding: var(--spacing-3xl) 0; }
.services__header { text-align: center; margin-bottom: var(--spacing-2xl); }
.services__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-text);
}
.services__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
.service-card {
  position: relative;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}
.service-card:hover {
  transform: translateY(-6px) rotate(-0.5deg);
  border-color: var(--color-pink-light);
  box-shadow: var(--shadow-pink);
}
.service-card--featured {
  border-color: rgba(192, 132, 252, 0.3);
  background: linear-gradient(135deg, #FFFFFF, #FDF4FF);
}
.service-card--featured:hover {
  border-color: var(--color-purple);
  box-shadow: var(--shadow-purple);
}
.service-card__number {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-pink), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.15;
  position: absolute; top: 1.5rem; right: 1.5rem;
}
.service-card__icon { margin-bottom: var(--spacing-lg); }
.service-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}
.service-card__subtitle {
  color: var(--color-pink);
  font-size: var(--fs-sm);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}
.service-card__desc {
  font-size: var(--fs-sm); color: var(--color-text-muted);
  line-height: 1.8; margin-bottom: var(--spacing-lg);
}
.service-card__list { display: flex; flex-direction: column; gap: 0.75rem; }
.service-card__list li {
  font-size: var(--fs-sm); color: var(--color-text-muted);
  padding-left: 1.5rem; position: relative;
}
.service-card__list li::before {
  content: ''; position: absolute; left: 0; top: 0.55em;
  width: 8px; height: 8px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-pink), var(--color-purple));
}
.service-card__link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: var(--fs-sm); font-weight: 700; color: var(--color-purple);
  transition: all var(--transition);
}
.service-card__link:hover { color: var(--color-pink); gap: 0.75rem; transform: translateX(2px); }

/* ===========================
   Facts — 优势卡片
   =========================== */
.facts {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}
.facts__header { text-align: center; margin-bottom: var(--spacing-2xl); }
.facts__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-text);
}
.facts__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
.fact-card {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}
.fact-card:nth-child(1):hover { border-color: var(--color-pink-light); box-shadow: var(--shadow-pink); transform: translateY(-4px) rotate(0.5deg); }
.fact-card:nth-child(2):hover { border-color: var(--color-purple-light); box-shadow: var(--shadow-purple); transform: translateY(-4px) rotate(-0.5deg); }
.fact-card:nth-child(3):hover { border-color: #A5F3FC; box-shadow: var(--shadow-cyan); transform: translateY(-4px) rotate(0.5deg); }
.fact-card:nth-child(4):hover { border-color: #FDE68A; box-shadow: 0 8px 32px rgba(253, 230, 138, 0.3); transform: translateY(-4px) rotate(-0.5deg); }
.fact-card__icon { margin-bottom: var(--spacing-md); }
.fact-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}
.fact-card__desc {
  font-size: var(--fs-sm); color: var(--color-text-muted); line-height: 1.9;
}

/* ===========================
   Contact
   =========================== */
.contact { padding: var(--spacing-3xl) 0; }
.contact__grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl); align-items: start;
}
.contact__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--spacing-xl);
}
.contact__list { display: flex; flex-direction: column; gap: var(--spacing-lg); }
.contact__item {
  display: flex; align-items: flex-start; gap: var(--spacing-md);
  font-size: var(--fs-sm); color: var(--color-text-muted);
}
.contact__item svg { flex-shrink: 0; margin-top: 2px; }
.contact__item a { color: var(--color-text-muted); }
.contact__item a:hover { color: var(--color-pink); }
.contact__cta {
  position: relative;
  background: linear-gradient(135deg, var(--color-pink), var(--color-purple));
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  overflow: hidden;
  color: #FFF;
}
.contact__cta-decor { position: absolute; inset: 0; pointer-events: none; }
.contact__cta-geo { position: absolute; }
.contact__cta-geo--1 { top: -15px; right: -15px; opacity: 0.15; animation: geoRotate 20s linear infinite; }
.contact__cta-geo--2 { bottom: 10px; left: 10px; opacity: 0.1; animation: geoRotate 25s linear infinite reverse; }
@keyframes geoRotate { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.contact__cta-title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  position: relative; color: #FFF;
}
.contact__cta-text {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--spacing-xl);
  position: relative;
}
.contact__cta .btn--gold {
  background: #FFF;
  color: var(--color-pink);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}
.contact__cta .btn--gold:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.2);
}

/* ===========================
   Footer
   =========================== */
.footer {
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  background: var(--color-bg-alt);
}
.footer__grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl); margin-bottom: var(--spacing-2xl);
}
.footer__logo {
  display: flex; align-items: center; gap: 0.75rem;
  color: var(--color-text); font-family: var(--font-cn);
  font-weight: 700; margin-bottom: var(--spacing-md);
}
.footer__logo:hover { color: var(--color-text); }
.footer__desc { font-size: var(--fs-sm); color: var(--color-text-dim); line-height: 1.8; max-width: 300px; }
.footer__heading {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}
.footer__links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer__links a {
  font-size: var(--fs-sm); color: var(--color-text-dim); transition: all var(--transition);
}
.footer__links a:hover { color: var(--color-pink); transform: translateX(2px); }
.footer__bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: var(--spacing-lg); border-top: 1px solid var(--color-border-light);
  font-size: var(--fs-xs); color: var(--color-text-dim);
}
.footer__bottom a { color: var(--color-text-dim); }
.footer__bottom a:hover { color: var(--color-purple); }

/* ===========================
   Scroll Reveal
   =========================== */
.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal--delay-1 { transition-delay: 0.12s; }
.reveal--delay-2 { transition-delay: 0.24s; }
.reveal--delay-3 { transition-delay: 0.36s; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===========================
   Mouse Glow — 粉紫光晕
   =========================== */
.mouse-glow {
  position: fixed; width: 350px; height: 350px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 157, 0.08) 0%, rgba(192, 132, 252, 0.05) 40%, transparent 70%);
  pointer-events: none; z-index: 9999;
  transform: translate(-50%, -50%); transition: opacity 0.3s;
}

/* ===========================
   Responsive — Tablet (≤1024px)
   =========================== */
@media (max-width: 1024px) {
  .about__grid, .contact__grid { grid-template-columns: 1fr; gap: var(--spacing-xl); }
  .services__grid, .facts__grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); }
}

/* ===========================
   Responsive — Mobile (≤768px)
   =========================== */
@media (max-width: 768px) {
  .nav {
    top: 0; left: 0; right: 0;
    transform: none;
    border-radius: 0;
    padding: 0.75rem var(--spacing-lg);
    max-width: 100%;
  }
  .nav__links {
    display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255, 240, 245, 0.97); backdrop-filter: blur(20px);
    flex-direction: column; align-items: center; justify-content: center;
    gap: var(--spacing-lg); z-index: 999; border-radius: 0;
  }
  .nav__links.active { display: flex; }
  .nav__link { font-size: var(--fs-xl); }
  .nav__cta { display: none; }
  .nav__hamburger { display: flex; z-index: 1001; }
  .hero { padding: var(--spacing-2xl) var(--spacing-md); }
  .hero__title { font-size: clamp(2rem, 7vw, 3rem); }
  .hero__actions { flex-direction: column; width: 100%; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .about, .services, .facts, .contact { padding: var(--spacing-2xl) 0; }
  .about__title, .services__title, .facts__title, .contact__title { font-size: var(--fs-2xl); }
  .footer__grid { grid-template-columns: 1fr; gap: var(--spacing-lg); }
  .footer__bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}