/* 惠州市富荣达科技有限公司 — Official Site */

:root {
  --ink: #0e0c0b;
  --ink-soft: #2a2420;
  --wine: #7a1f2b;
  --wine-deep: #4a1018;
  --jade: #1f3d32;
  --jade-mid: #3a6352;
  --gold: #c4a46a;
  --gold-soft: #d9bf8a;
  --stone: #e8e6e2;
  --fog: #f2f1ef;
  --text: #1c1816;
  --muted: #6e6660;
  --line: rgba(28, 24, 22, 0.1);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Noto Serif SC", "Songti SC", serif;
  --font-latin: "Instrument Serif", Georgia, serif;
  --font-body: "Noto Sans SC", "PingFang SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text);
  background: var(--fog);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  opacity: 0.04;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 4.5vw;
  transition: background 0.45s var(--ease), backdrop-filter 0.45s, padding 0.45s, border-color 0.45s;
  border-bottom: 1px solid transparent;
}

.site-header .logo-mark { color: #f7f4ef; }
.site-header .logo-sub { color: var(--gold-soft); }
.site-header .nav-toggle span { background: #f7f4ef; }

.site-header.scrolled {
  background: rgba(242, 241, 239, 0.9);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 0.9rem 4.5vw;
  border-bottom-color: var(--line);
}

.site-header.scrolled .logo-mark { color: var(--text); }
.site-header.scrolled .logo-sub { color: var(--wine); }
.site-header.scrolled .nav-toggle span { background: var(--text); }

.logo {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  line-height: 1;
}

.logo-mark {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.logo-sub {
  font-family: var(--font-latin);
  font-size: 0.78rem;
  letter-spacing: 0.4em;
  font-style: italic;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2.1rem;
}

.nav a {
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: rgba(247, 244, 239, 0.88);
  transition: color 0.3s;
}

.nav a:hover { color: var(--gold-soft); }

.site-header.scrolled .nav a { color: var(--ink-soft); }
.site-header.scrolled .nav a:hover { color: var(--wine); }

.nav-cta {
  padding: 0.55rem 1.25rem;
  border: 1px solid rgba(247, 244, 239, 0.5);
  transition: background 0.3s, color 0.3s, border-color 0.3s !important;
}

.nav-cta:hover {
  background: #f7f4ef;
  color: var(--ink) !important;
  border-color: #f7f4ef;
}

.site-header.scrolled .nav-cta {
  border-color: var(--text);
  color: var(--ink-soft);
}

.site-header.scrolled .nav-cta:hover {
  background: var(--ink);
  color: #f7f4ef !important;
  border-color: var(--ink);
}

.nav-toggle {
  display: none;
  width: 2rem;
  height: 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 0.4rem;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  height: 1.5px;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  padding: 0 4.5vw 13vh;
  color: #f7f4ef;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-img {
  transform: scale(1.12);
  animation: heroZoom 20s var(--ease) forwards;
}

@keyframes heroZoom {
  to { transform: scale(1); }
}

.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(14, 12, 11, 0.82) 0%, rgba(14, 12, 11, 0.28) 52%, rgba(74, 16, 24, 0.5) 100%),
    linear-gradient(to top, rgba(14, 12, 11, 0.78) 0%, transparent 48%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 44rem;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  font-weight: 500;
  letter-spacing: 0.22em;
  margin-bottom: 1.35rem;
  color: var(--gold-soft);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7.5vw, 5.6rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: 0.1em;
  margin-bottom: 1.35rem;
}

.hero-lead {
  font-size: clamp(0.95rem, 1.6vw, 1.12rem);
  letter-spacing: 0.08em;
  color: rgba(247, 244, 239, 0.82);
  max-width: 28rem;
  margin-bottom: 2.4rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-scroll {
  position: absolute;
  right: 4.5vw;
  bottom: 9vh;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--font-latin);
  font-size: 0.85rem;
  letter-spacing: 0.28em;
  font-style: italic;
  color: rgba(247, 244, 239, 0.55);
}

.hero-scroll i {
  display: block;
  width: 1px;
  height: 3.8rem;
  background: linear-gradient(to bottom, rgba(247, 244, 239, 0.55), transparent);
  animation: scrollPulse 2.4s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.65); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.9rem;
  font-size: 0.84rem;
  letter-spacing: 0.16em;
  transition: background 0.35s var(--ease), color 0.35s, border-color 0.35s, transform 0.35s;
}

.btn:hover { transform: translateY(-2px); }

.btn-gold {
  background: var(--gold);
  color: var(--ink);
  border: 1px solid var(--gold);
}

.btn-gold:hover {
  background: var(--gold-soft);
  border-color: var(--gold-soft);
}

.btn-line {
  background: transparent;
  color: #f7f4ef;
  border: 1px solid rgba(247, 244, 239, 0.45);
}

.btn-line:hover {
  background: rgba(247, 244, 239, 0.08);
  border-color: #f7f4ef;
}

/* Sections */
.section-inner {
  width: min(1140px, 92vw);
  margin: 0 auto;
  padding: 8rem 0;
}

.eyebrow {
  font-family: var(--font-latin);
  font-size: 1.05rem;
  letter-spacing: 0.22em;
  font-style: italic;
  color: var(--wine);
  margin-bottom: 1rem;
}

.eyebrow.jade { color: var(--jade-mid); }
.eyebrow.light { color: var(--gold-soft); }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.6vw, 3.25rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: 0.08em;
  margin-bottom: 1.3rem;
  color: var(--text);
}

.section-title.light { color: #f7f4ef; }

.section-text {
  font-size: 1rem;
  color: var(--muted);
  max-width: 34rem;
  letter-spacing: 0.04em;
}

.section-text.light { color: rgba(247, 244, 239, 0.72); }

.section-head {
  margin-bottom: 3.75rem;
  max-width: 36rem;
}

/* About */
.about {
  background:
    radial-gradient(ellipse 70% 55% at 100% -10%, rgba(122, 31, 43, 0.07), transparent 60%),
    linear-gradient(180deg, #ebe9e5 0%, var(--fog) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4.5rem;
  align-items: center;
}

.about-points {
  list-style: none;
  margin-top: 2.6rem;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.about-points li {
  padding-left: 1.3rem;
  border-left: 2px solid var(--wine);
  font-size: 0.95rem;
  color: var(--ink-soft);
  letter-spacing: 0.03em;
}

.about-points strong {
  font-weight: 500;
  color: var(--text);
}

.about-visual {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

.about-visual img {
  transition: transform 1.3s var(--ease);
}

.about-visual:hover img { transform: scale(1.05); }

.about-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: space-between;
  padding: 1.35rem 1.5rem;
  background: linear-gradient(to top, rgba(14, 12, 11, 0.8), transparent);
  font-family: var(--font-latin);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  font-style: italic;
  color: #f7f4ef;
}

/* Products */
.wine {
  background:
    radial-gradient(ellipse 50% 40% at 0% 0%, rgba(122, 31, 43, 0.05), transparent),
    var(--fog);
}

.tea {
  background:
    radial-gradient(ellipse 60% 45% at 100% 100%, rgba(31, 61, 50, 0.08), transparent),
    #e4e7e4;
}

.product-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.product {
  display: flex;
  flex-direction: column;
}

.product-img {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  margin-bottom: 1.4rem;
}

.product-img img {
  transition: transform 1.1s var(--ease);
}

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

.product-tag {
  display: block;
  font-family: var(--font-latin);
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  font-style: italic;
  color: var(--wine);
  margin-bottom: 0.35rem;
}

.product-tag.jade { color: var(--jade-mid); }

.product h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-bottom: 0.55rem;
}

.product p {
  font-size: 0.9rem;
  color: var(--muted);
  letter-spacing: 0.03em;
}

/* Bridge */
.bridge {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 50vh;
}

.bridge-panel {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 2.6rem;
}

.bridge-panel img {
  position: absolute;
  inset: 0;
  transition: transform 1.5s var(--ease);
}

.bridge-panel:hover img { transform: scale(1.07); }

.bridge-panel::after {
  content: "";
  position: absolute;
  inset: 0;
}

.wine-tone::after {
  background: linear-gradient(to top, rgba(74, 16, 24, 0.72), transparent 55%);
}

.tea-tone::after {
  background: linear-gradient(to top, rgba(31, 61, 50, 0.72), transparent 55%);
}

.bridge-panel p {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 0.24em;
  color: #f7f4ef;
}

/* Craft */
.craft {
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(122, 31, 43, 0.35), transparent 55%),
    radial-gradient(ellipse 60% 50% at 90% 100%, rgba(31, 61, 50, 0.4), transparent 50%),
    linear-gradient(145deg, #120f0e 0%, #1a1214 45%, #0f1613 100%);
  color: #f7f4ef;
}

.craft-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 4.5rem;
  align-items: start;
}

.craft-list {
  display: flex;
  flex-direction: column;
}

.craft-item {
  padding: 1.85rem 0;
  border-top: 1px solid rgba(247, 244, 239, 0.12);
  display: flex;
  gap: 1.5rem;
}

.craft-item:last-child {
  border-bottom: 1px solid rgba(247, 244, 239, 0.12);
}

.craft-num {
  font-family: var(--font-latin);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--gold-soft);
  min-width: 2.5rem;
  padding-top: 0.1rem;
}

.craft-item h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  margin-bottom: 0.45rem;
}

.craft-item p {
  font-size: 0.9rem;
  color: rgba(247, 244, 239, 0.58);
  letter-spacing: 0.03em;
}

/* Contact */
.contact {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.contact-bg { position: absolute; inset: 0; }

.contact-veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(125deg, rgba(14, 12, 11, 0.9) 0%, rgba(74, 16, 24, 0.78) 100%);
}

.contact-inner {
  position: relative;
  z-index: 1;
  padding-top: 8.5rem;
  padding-bottom: 8.5rem;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.1rem;
  margin: 3.2rem 0 2.2rem;
  max-width: 54rem;
}

.contact-address { grid-column: 1 / -1; }

.contact-info span {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: rgba(247, 244, 239, 0.48);
  margin-bottom: 0.5rem;
}

.contact-info strong {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: #f7f4ef;
}

.contact-info a {
  color: #f7f4ef;
  transition: color 0.3s;
}

.contact-info a:hover { color: var(--gold-soft); }

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: rgba(247, 244, 239, 0.5);
  padding: 2.6rem 4.5vw;
}

.footer-inner {
  width: min(1140px, 100%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.footer-brand .logo-mark {
  color: #f7f4ef;
  font-size: 1.15rem;
}

.footer-brand .logo-sub { color: var(--gold); }

.footer-meta {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.site-footer p {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.site-footer a {
  color: rgba(247, 244, 239, 0.72);
  transition: color 0.3s;
}

.site-footer a:hover { color: var(--gold-soft); }

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.95s var(--ease), transform 0.95s var(--ease);
}

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

.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }
.delay-3 { transition-delay: 0.36s; }

/* Responsive */
@media (max-width: 900px) {
  .about-grid,
  .craft-grid,
  .product-rail,
  .contact-info {
    grid-template-columns: 1fr;
  }

  .contact-address { grid-column: auto; }
  .footer-meta { text-align: left; }
  .product-rail { gap: 2.6rem; }

  .bridge {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .bridge-panel { min-height: 38vh; }
  .about-visual { max-width: 440px; }
  .hero-scroll { display: none; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(300px, 82vw);
    height: 100vh;
    height: 100dvh;
    background: var(--fog);
    flex-direction: column;
    align-items: flex-start;
    padding: 5.5rem 2rem 2rem;
    gap: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.45s var(--ease);
    box-shadow: -10px 0 40px rgba(14, 12, 11, 0.1);
  }

  .nav.open { transform: translateX(0); }

  .nav a,
  .site-header.scrolled .nav a {
    font-size: 1rem;
    color: var(--ink-soft);
  }

  .nav a:hover,
  .site-header.scrolled .nav a:hover { color: var(--wine); }

  .nav-cta,
  .site-header.scrolled .nav-cta {
    border-color: var(--text);
    color: var(--ink-soft);
  }

  .nav-cta:hover,
  .site-header.scrolled .nav-cta:hover {
    background: var(--ink);
    color: #f7f4ef !important;
    border-color: var(--ink);
  }

  .nav-cta { margin-top: 0.5rem; }

  .hero {
    align-items: center;
    padding: 6.5rem 5vw 5rem;
  }

  .hero-title {
    font-size: clamp(2.4rem, 11vw, 3.4rem);
    margin-bottom: 1rem;
  }

  .hero-brand { margin-bottom: 1rem; }
  .hero-lead { margin-bottom: 1.75rem; }

  .section-inner { padding: 5.2rem 0; }

  .contact-inner {
    padding-top: 5.5rem;
    padding-bottom: 5.5rem;
  }
}