/* ============================================================
   玖诚智行 官网 — style.css
   ============================================================ */

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg: #0a0a0f;
  --c-bg2: #111118;
  --c-bg3: #1a1a25;
  --c-card: #14141e;
  --c-text: #e8e8ee;
  --c-text2: #9999aa;
  --c-accent: #d4a843;
  --c-accent2: #f0c860;
  --c-gold: #d4a843;
  --c-red: #e04040;
  --c-blue: #4080e0;
  --c-green: #40b880;
  --c-silver: #a0a0b8;
  --c-white: #e8e8ee;
  --c-blue-red: linear-gradient(135deg, #4080e0 50%, #e04040 50%);
  --c-gold-grad: linear-gradient(135deg, #d4a843, #f0d878);

  --ff-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max-w: 1200px;
  --nav-h: 72px;
  --radius: 12px;
  --radius-lg: 20px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--ff-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c-accent); text-decoration: none; transition: color .3s; }
a:hover { color: var(--c-accent2); }

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

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

.section {
  padding: 100px 0;
}

.section__header {
  text-align: center;
  margin-bottom: 60px;
}

.section__title {
  font-size: 2.4rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section__desc {
  font-size: 0.9rem;
  color: var(--c-text2);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-top: 8px;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .3s ease;
  border: none;
  text-align: center;
}

.btn--primary {
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent2));
  color: #0a0a0f;
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(212, 168, 67, .35);
  color: #0a0a0f;
}

.btn--outline {
  background: transparent;
  border: 2px solid var(--c-accent);
  color: var(--c-accent);
}
.btn--outline:hover {
  background: var(--c-accent);
  color: #0a0a0f;
  transform: translateY(-2px);
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  background: rgba(10, 10, 15, .85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(212, 168, 67, .1);
  z-index: 1000;
  transition: background .3s;
}

.header.scrolled {
  background: rgba(10, 10, 15, .95);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text);
  font-weight: 700;
  font-size: 1.3rem;
}

.logo__icon {
  font-size: 1.6rem;
  color: var(--c-accent);
}

.nav__list {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav__link {
  padding: 8px 20px;
  border-radius: 50px;
  color: var(--c-text2);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all .3s;
}
.nav__link:hover,
.nav__link.active {
  color: var(--c-accent);
  background: rgba(212, 168, 67, .1);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: all .3s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-h);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(212, 168, 67, .08), transparent),
    radial-gradient(ellipse 60% 50% at 30% 80%, rgba(64, 128, 224, .06), transparent),
    radial-gradient(ellipse 50% 40% at 70% 60%, rgba(224, 64, 64, .04), transparent);
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  width: 100%;
}

.hero__logo-mark {
  font-size: 3rem;
  color: var(--c-accent);
  margin-bottom: 20px;
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { filter: drop-shadow(0 0 10px rgba(212, 168, 67, .3)); }
  50% { filter: drop-shadow(0 0 25px rgba(212, 168, 67, .6)); }
}

.hero__title {
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff, var(--c-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(0.8rem, 1.5vw, 1rem);
  color: var(--c-text2);
  letter-spacing: 3px;
  margin-bottom: 30px;
}

.hero__slogan {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--c-accent);
  font-style: italic;
  margin-bottom: 20px;
  opacity: .9;
}

.hero__desc {
  max-width: 640px;
  margin: 0 auto 40px;
  color: var(--c-text2);
  font-size: 1.05rem;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background: var(--c-bg2);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about__left h3 {
  font-size: 1.6rem;
  margin-bottom: 20px;
  color: var(--c-accent);
}

.about__left p {
  color: var(--c-text2);
  line-height: 1.9;
  margin-bottom: 32px;
}

.about__stats {
  display: flex;
  gap: 30px;
}

.stat {
  text-align: center;
}

.stat__num {
  display: block;
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--c-accent);
  line-height: 1;
}

.stat__label {
  font-size: 0.85rem;
  color: var(--c-text2);
  margin-top: 6px;
}

.about__right {
  display: flex;
  justify-content: center;
}

.about__cert {
  background: var(--c-card);
  border: 1px solid rgba(212, 168, 67, .15);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  width: 100%;
  max-width: 420px;
}

.cert__placeholder {
  color: var(--c-text2);
}

.cert__placeholder > span:first-child {
  display: block;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--c-accent);
  margin-bottom: 20px;
}

.cert__icons {
  display: flex;
  justify-content: center;
  gap: 20px;
  font-size: 2.5rem;
}

/* ============================================================
   PRODUCTS
   ============================================================ */
.products__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--c-card);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .4s ease;
  position: relative;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, .4);
  border-color: rgba(212, 168, 67, .2);
}

.product-card__badge {
  padding: 14px 24px;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 2px;
  border-bottom: 1px solid rgba(255, 255, 255, .05);
}

/* Color variants */
.product-card[data-color="black"] .product-card__badge {
  background: #1a1a1a;
  color: #ccc;
}
.product-card[data-color="red"] .product-card__badge {
  background: linear-gradient(135deg, #8b1a1a, #c02828);
  color: #fff;
}
.product-card[data-color="white"] .product-card__badge {
  background: linear-gradient(135deg, #555, #888);
  color: #fff;
}
.product-card[data-color="blue-red"] .product-card__badge {
  background: linear-gradient(135deg, #1a3a8b 50%, #8b1a1a 50%);
  color: #fff;
}
.product-card[data-color="gold"] .product-card__badge {
  background: linear-gradient(135deg, #8b6914, #c8a030);
  color: #1a1a0a;
}
.product-card[data-color="blue"] .product-card__badge {
  background: linear-gradient(135deg, #1a3a8b, #2860c0);
  color: #fff;
}
.product-card[data-color="silver"] .product-card__badge {
  background: linear-gradient(135deg, #5a5a6a, #808098);
  color: #fff;
}
.product-card[data-color="green"] .product-card__badge {
  background: linear-gradient(135deg, #1a6b3a, #28a060);
  color: #fff;
}

.product-card__body {
  padding: 20px 24px 24px;
}

.product-card__body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--c-text);
}

.product-card__body p {
  font-size: 0.9rem;
  color: var(--c-text2);
  line-height: 1.7;
  margin-bottom: 14px;
}

.product-card__link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-accent);
  display: inline-block;
  transition: gap .3s;
}
.product-card__link:hover {
  gap: 6px;
}

.product-card__price {
  display: inline-block;
  background: rgba(212, 168, 67, .12);
  color: var(--c-accent);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 4px 12px;
  border-radius: 6px;
  margin-bottom: 12px;
}

/* ============================================================
   SALON
   ============================================================ */
.salon {
  background: var(--c-bg2);
}

.salon__inner {
  text-align: center;
}

.salon__icon {
  font-size: 3rem;
  color: var(--c-accent);
  margin-bottom: 16px;
}

.salon__title {
  font-size: 2.4rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.salon__subtitle {
  color: var(--c-text2);
  font-size: 1.05rem;
  margin-bottom: 50px;
}

.salon__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

.salon__card {
  background: var(--c-card);
  border: 1px solid rgba(212, 168, 67, .1);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: left;
  transition: all .3s;
}

.salon__card:hover {
  border-color: var(--c-accent);
  transform: translateY(-4px);
}

.salon__card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.salon__card h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--c-text);
}

.salon__card p {
  font-size: 0.9rem;
  color: var(--c-text2);
  line-height: 1.7;
}

/* ============================================================
   INDUSTRIES
   ============================================================ */
.industries__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}

.industry__item {
  background: var(--c-card);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  transition: all .3s;
  cursor: default;
}

.industry__item:hover {
  border-color: var(--c-accent);
  transform: translateY(-3px);
}

.industry__item .icon {
  font-size: 1.8rem;
  display: block;
  margin-bottom: 10px;
}

.industry__item .name {
  font-size: 0.85rem;
  color: var(--c-text2);
  font-weight: 500;
}

/* ============================================================
   PARTNERS
   ============================================================ */
.partners {
  background: var(--c-bg2);
}

.partners__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 20px;
}

.partner__item {
  background: var(--c-card);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--c-text2);
  transition: all .3s;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70px;
}

.partner__item:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  transform: translateY(-3px);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact__item h4 {
  font-size: 0.85rem;
  color: var(--c-text2);
  font-weight: 500;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact__item p {
  font-size: 1.05rem;
  color: var(--c-text);
}

.contact__item a {
  color: var(--c-text);
}
.contact__item a:hover {
  color: var(--c-accent);
}

.contact__qr {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.qr__box {
  background: var(--c-card);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
}

.qr__icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 10px;
}

.qr__box p {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.qr__placeholder {
  font-size: 0.8rem;
  color: var(--c-text2);
  background: rgba(255, 255, 255, .04);
  border: 1px dashed rgba(255, 255, 255, .1);
  border-radius: 8px;
  padding: 20px 12px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid rgba(212, 168, 67, .1);
  padding: 40px 0;
  text-align: center;
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer__links a {
  color: var(--c-text2);
  font-size: 0.9rem;
}
.footer__links a:hover {
  color: var(--c-accent);
}

.footer__copyright {
  font-size: 0.8rem;
  color: var(--c-text2);
  line-height: 1.8;
}
.footer__copyright a {
  color: var(--c-text2);
}
.footer__copyright a:hover {
  color: var(--c-accent);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, .97);
    backdrop-filter: blur(20px);
    padding: 20px;
    transform: translateY(-120%);
    transition: transform .3s;
    border-bottom: 1px solid rgba(212, 168, 67, .1);
  }
  .nav.open {
    transform: translateY(0);
  }
  .nav__list {
    flex-direction: column;
    gap: 4px;
  }
  .nav__link {
    display: block;
    padding: 12px 20px;
    font-size: 1.05rem;
  }
  .hamburger {
    display: flex;
  }

  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about__stats {
    justify-content: center;
  }

  .section {
    padding: 60px 0;
  }

  .section__title {
    font-size: 1.8rem;
  }

  .products__grid {
    grid-template-columns: 1fr;
  }

  .industries__grid {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  }

  .contact__qr {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }
  .btn {
    width: 100%;
    max-width: 280px;
  }
  .partners__grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }
}