/* ============================================================
   ECOKA 爱厨家 — 官网样式
   设计语言：深空黑 · 金属银 · 科技绿
   ============================================================ */

:root {
  --bg: #05060a;
  --bg-2: #0a0c12;
  --bg-3: #10131c;
  --ink: #f2f4f8;
  --ink-dim: #b7bfce;
  --muted: #7e8798;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #35e8a2;
  --accent-deep: #0fbf7f;
  --accent-glow: rgba(53, 232, 162, 0.35);
  --metal-hi: #e8ecf3;
  --metal-lo: #6d7686;
  --radius: 20px;
  --font: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei UI",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #04140d; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { max-width: 100%; display: block; }

/* ---------- 噪点质感层 ---------- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 滚动进度条 ---------- */
#progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent));
  box-shadow: 0 0 12px var(--accent-glow);
  z-index: 10000;
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px clamp(20px, 5vw, 64px);
  transition: background 0.4s, padding 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  padding: 14px clamp(20px, 5vw, 64px);
  background: rgba(5, 6, 10, 0.72);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom-color: var(--line);
}
.brand {
  display: flex;
  align-items: center;
}
.nav-links {
  display: flex;
  gap: clamp(16px, 2.6vw, 38px);
  font-size: 0.9rem;
  color: var(--ink-dim);
}
.nav-links a {
  position: relative;
  padding: 6px 0;
  transition: color 0.3s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.65, 0, 0.35, 1);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-cta {
  font-size: 0.85rem;
  padding: 10px 22px;
  border-radius: 100px;
  border: 1px solid rgba(53, 232, 162, 0.4);
  color: var(--accent);
  transition: all 0.3s;
  white-space: nowrap;
}
.nav-cta:hover {
  background: var(--accent);
  color: #04140d;
  box-shadow: 0 0 28px var(--accent-glow);
}
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1002;
}
.burger span {
  width: 24px; height: 2px;
  background: var(--ink);
  transition: 0.3s;
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px clamp(20px, 6vw, 80px) 80px;
  overflow: hidden;
}
#particles {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero .glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}
.glow-a {
  width: 55vw; height: 55vw;
  top: -20vw; right: -15vw;
  background: radial-gradient(circle, rgba(53, 232, 162, 0.14), transparent 65%);
}
.glow-b {
  width: 40vw; height: 40vw;
  bottom: -12vw; left: -10vw;
  background: radial-gradient(circle, rgba(110, 156, 255, 0.10), transparent 65%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1180px;
  margin: 0 auto;
  width: 100%;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 0.82rem;
  letter-spacing: 0.35em;
  color: var(--accent);
  margin-bottom: 30px;
  text-transform: uppercase;
}
.kicker::before {
  content: "";
  width: 44px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent));
}
.hero h1 {
  font-size: clamp(2.6rem, 7.2vw, 5.6rem);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin-bottom: 30px;
}
.hero h1 .metal {
  background: linear-gradient(105deg, #fdfeff 10%, #9aa5b8 38%, #eef1f7 55%, #7d8798 80%, #d8dde6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero h1 .green {
  background: linear-gradient(105deg, #8affd2, var(--accent) 45%, #0fbf7f);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 60px rgba(53, 232, 162, 0.25);
}
.hero .sub {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: var(--ink-dim);
  max-width: 640px;
  margin-bottom: 48px;
  font-weight: 300;
  letter-spacing: 0.06em;
}
.hero .sub strong { color: var(--ink); font-weight: 600; }
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: 100px;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
  cursor: pointer;
  border: none;
  font-family: inherit;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #14b57e);
  color: #03130c;
  font-weight: 700;
  box-shadow: 0 8px 32px rgba(53, 232, 162, 0.28);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 44px rgba(53, 232, 162, 0.45);
}
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
}
.btn .arr { transition: transform 0.3s; }
.btn:hover .arr { transform: translateX(5px); }

.scroll-hint {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.35em;
}
.scroll-hint .wheel {
  width: 22px; height: 36px;
  border: 1.5px solid rgba(255, 255, 255, 0.25);
  border-radius: 12px;
  position: relative;
}
.scroll-hint .wheel::after {
  content: "";
  position: absolute;
  top: 6px; left: 50%;
  width: 3px; height: 7px;
  margin-left: -1.5px;
  border-radius: 3px;
  background: var(--accent);
  animation: wheel 1.8s ease-in-out infinite;
}
@keyframes wheel {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------- 跑马灯 ---------- */
.marquee {
  border-block: 1px solid var(--line);
  padding: 18px 0;
  overflow: hidden;
  background: var(--bg-2);
  position: relative;
}
.marquee-track {
  display: flex;
  gap: 64px;
  width: max-content;
  animation: marquee 30s linear infinite;
  white-space: nowrap;
  font-size: 0.88rem;
  letter-spacing: 0.3em;
  color: var(--muted);
}
.marquee-track b { color: var(--accent); font-weight: 600; }
@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- 通用 Section ---------- */
section { position: relative; }
.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(90px, 12vw, 150px) clamp(20px, 5vw, 40px);
}
.sec-head { margin-bottom: clamp(48px, 6vw, 80px); }
.sec-head .tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  letter-spacing: 0.35em;
  color: var(--accent);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.sec-head .tag::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.sec-head h2 {
  font-size: clamp(1.9rem, 4.4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.02em;
}
.sec-head h2 em {
  font-style: normal;
  background: linear-gradient(105deg, #8affd2, var(--accent), #0fbf7f);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.sec-head p {
  margin-top: 18px;
  color: var(--muted);
  max-width: 620px;
  font-weight: 300;
}

/* ---------- 数据带 ---------- */
.stats {
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
}
.stats .wrap {
  padding-block: clamp(60px, 7vw, 90px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.stat { border-left: 1px solid var(--line); padding-left: 26px; }
.stat .num {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, #fff, #97a1b3);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.1;
}
.stat .num .unit {
  font-size: 0.45em;
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
  margin-left: 4px;
}
.stat .label { margin-top: 10px; color: var(--muted); font-size: 0.9rem; }

/* ---------- 产品 ---------- */
.product { background: var(--bg); overflow: hidden; }
.product-stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}
.device-wrap {
  position: relative;
  display: grid;
  place-items: center;
  padding: 30px 0;
}
.device-wrap .halo {
  position: absolute;
  width: 130%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(53, 232, 162, 0.10), transparent 60%);
  filter: blur(30px);
  animation: breathe 5s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.08); opacity: 1; }
}
.device-wrap .ring {
  position: absolute;
  width: 105%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, 0.10);
  animation: spin 40s linear infinite;
}
.device-wrap .ring::before {
  content: "";
  position: absolute;
  top: -4px; left: 50%;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent);
}
@keyframes spin { to { transform: rotate(360deg); } }
.device {
  width: min(78%, 380px);
  filter: drop-shadow(0 40px 70px rgba(0, 0, 0, 0.6));
  animation: float 6s ease-in-out infinite;
  position: relative;
  z-index: 2;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

.product-info .p-series {
  color: var(--accent);
  letter-spacing: 0.3em;
  font-size: 0.8rem;
  margin-bottom: 16px;
}
.product-info h3 {
  font-size: clamp(1.8rem, 3.6vw, 2.7rem);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}
.product-info > p {
  color: var(--muted);
  font-weight: 300;
  margin-bottom: 38px;
  max-width: 480px;
}
.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 40px;
}
.spec {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(6px);
  transition: border-color 0.3s, transform 0.3s, background 0.3s;
}
.spec:hover {
  border-color: rgba(53, 232, 162, 0.45);
  background: rgba(53, 232, 162, 0.04);
  transform: translateY(-4px);
}
.spec .v {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--ink);
}
.spec .v i {
  font-style: normal;
  font-size: 0.7rem;
  color: var(--accent);
  margin-left: 4px;
  letter-spacing: 0.1em;
}
.spec .k { color: var(--muted); font-size: 0.82rem; margin-top: 4px; }

/* ---------- 核心科技 ---------- */
.tech { background: var(--bg-2); }
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.tech-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.005));
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.4s;
}
.tech-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%),
    rgba(53, 232, 162, 0.10), transparent 45%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.tech-card:hover { transform: translateY(-6px); border-color: rgba(53, 232, 162, 0.35); }
.tech-card:hover::before { opacity: 1; }
.tech-card .icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(53, 232, 162, 0.10);
  border: 1px solid rgba(53, 232, 162, 0.25);
  margin-bottom: 24px;
}
.tech-card .icon svg { width: 26px; height: 26px; stroke: var(--accent); }
.tech-card h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; }
.tech-card p { color: var(--muted); font-size: 0.9rem; font-weight: 300; }
.tech-card .idx {
  position: absolute;
  top: 24px; right: 26px;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.18);
  letter-spacing: 0.2em;
}

/* ---------- 静音对比 ---------- */
.silence {
  margin-top: clamp(60px, 8vw, 100px);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  padding: clamp(30px, 5vw, 56px);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.03), transparent);
}
.silence h4 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}
.silence .note { color: var(--muted); font-size: 0.85rem; margin-bottom: 36px; }
.db-row {
  display: grid;
  grid-template-columns: 130px 1fr 74px;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}
.db-row .name { color: var(--ink-dim); text-align: right; }
.db-track {
  height: 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.db-fill {
  height: 100%;
  width: 0;
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.12));
  transition: width 1.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.db-row.hero-row .db-fill {
  background: linear-gradient(90deg, var(--accent-deep), var(--accent));
  box-shadow: 0 0 18px var(--accent-glow);
}
.db-row .val { color: var(--muted); font-variant-numeric: tabular-nums; }
.db-row.hero-row .name, .db-row.hero-row .val { color: var(--accent); font-weight: 700; }

/* ---------- 里程碑 ---------- */
.timeline-sec { background: var(--bg); }
.timeline {
  position: relative;
  padding-left: 40px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 6px; bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--accent), rgba(255, 255, 255, 0.08));
}
.tl-item {
  position: relative;
  padding-bottom: clamp(40px, 5vw, 64px);
}
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -37px; top: 8px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  box-shadow: 0 0 14px var(--accent-glow);
}
.tl-item .year {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 800;
  background: linear-gradient(180deg, #fff, #8f99ab);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}
.tl-item h4 { font-size: 1.1rem; margin: 8px 0 6px; color: var(--accent); font-weight: 700; }
.tl-item p { color: var(--muted); font-weight: 300; max-width: 560px; font-size: 0.95rem; }

/* ---------- 绿色使命 ---------- */
.green-sec {
  background:
    radial-gradient(900px 500px at 80% 0%, rgba(53, 232, 162, 0.10), transparent 60%),
    radial-gradient(700px 500px at 10% 100%, rgba(15, 191, 127, 0.08), transparent 60%),
    var(--bg-2);
  border-block: 1px solid var(--line);
}
.green-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}
.green-copy h2 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 24px;
}
.green-copy h2 em {
  font-style: normal;
  color: var(--accent);
}
.green-copy p { color: var(--muted); font-weight: 300; margin-bottom: 18px; }
.eco-cards { display: grid; gap: 14px; }
.eco-card {
  display: flex;
  align-items: center;
  gap: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 26px;
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.3s, transform 0.3s;
}
.eco-card:hover { border-color: rgba(53, 232, 162, 0.4); transform: translateX(6px); }
.eco-card .big {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--accent);
  min-width: 100px;
  font-variant-numeric: tabular-nums;
}
.eco-card .desc { color: var(--ink-dim); font-size: 0.92rem; }
.eco-card .desc small { display: block; color: var(--muted); font-size: 0.78rem; margin-top: 2px; }

/* ---------- 关于 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 90px);
}
.about-copy p { color: var(--ink-dim); font-weight: 300; margin-bottom: 20px; }
.about-copy p strong { color: var(--ink); font-weight: 600; }
.honor-list { display: grid; gap: 14px; }
.honor {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.3s;
}
.honor:hover { border-color: rgba(53, 232, 162, 0.4); }
.honor .h-icon {
  flex: none;
  width: 40px; height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(53, 232, 162, 0.1);
  border: 1px solid rgba(53, 232, 162, 0.25);
}
.honor .h-icon svg { width: 20px; height: 20px; stroke: var(--accent); }
.honor h5 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.honor p { color: var(--muted); font-size: 0.85rem; font-weight: 300; }

/* ---------- 联系 ---------- */
.contact-sec {
  background:
    radial-gradient(800px 400px at 50% 0%, rgba(53, 232, 162, 0.07), transparent 60%),
    var(--bg);
  border-top: 1px solid var(--line);
  text-align: center;
}
.contact-sec h2 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 800;
  margin-bottom: 18px;
}
.contact-sec h2 em {
  font-style: normal;
  background: linear-gradient(105deg, #8affd2, var(--accent), #0fbf7f);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.contact-sec > .wrap > p { color: var(--muted); max-width: 540px; margin: 0 auto 44px; font-weight: 300; }
.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 56px;
  text-align: left;
}
.c-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.3s, transform 0.3s;
}
.c-card:hover { border-color: rgba(53, 232, 162, 0.4); transform: translateY(-4px); }
.c-card .c-k { color: var(--muted); font-size: 0.8rem; letter-spacing: 0.2em; margin-bottom: 10px; }
.c-card .c-v { font-size: 1.05rem; font-weight: 600; word-break: break-all; }
.c-card .c-v a:hover { color: var(--accent); }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
  padding: 48px clamp(20px, 5vw, 40px) 36px;
}
.foot-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.foot-inner .copy { color: var(--muted); font-size: 0.8rem; line-height: 1.9; }
.foot-links { display: flex; gap: 26px; color: var(--muted); font-size: 0.85rem; }
.foot-links a:hover { color: var(--accent); }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- 开场动画 ---------- */
#intro {
  position: fixed;
  inset: 0;
  z-index: 10001;
  background: var(--bg);
  display: grid;
  place-items: center;
  transition: opacity 0.8s ease 0.2s, visibility 0.8s ease 0.2s;
}
#intro.done { opacity: 0; visibility: hidden; }
#intro .logo {
  font-size: clamp(2.6rem, 9vw, 5rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
  background: linear-gradient(105deg, #fdfeff, #c3ccdb, #ffffff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0;
  animation: introIn 1.2s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}
@keyframes introIn {
  from { opacity: 0; transform: translateY(24px) scale(0.96); }
  to { opacity: 1; transform: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .nav-links {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 100svh;
    background: rgba(4, 5, 8, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 34px;
    font-size: 1.3rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0s 0.35s;
    z-index: 1001;
  }
  .nav-links.open {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.35s ease, visibility 0s;
  }
  .nav-links a { padding: 4px 30px; }
  .burger { display: flex; }
  .nav-cta { display: none; }
  .stats .wrap { grid-template-columns: 1fr 1fr; gap: 40px 24px; }
  .product-stage, .green-grid, .about-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .db-row { grid-template-columns: 96px 1fr 60px; font-size: 0.8rem; }
}
@media (max-width: 560px) {
  .tech-grid { grid-template-columns: 1fr; }
  .stats .wrap { grid-template-columns: 1fr 1fr; }
  .spec-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { letter-spacing: 0; }
}

/* ============================================================
   v2 — 品牌换标 & 实拍素材版块
   ============================================================ */

/* ---------- 品牌字标（爱厨家 / AICHUJIA 两端对齐） ---------- */
.brand-txt {
  display: inline-flex;
  flex-direction: column;
  line-height: 1;
}
.brand-txt b {
  font-size: 1.5rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: 0;
}
.brand-txt i {
  display: flex;
  justify-content: space-between;
  font-style: normal;
  font-size: 0.62rem;
  font-weight: 600;
  color: var(--ink-dim);
  margin-top: 4px;
  /* 汉字字形两侧有留白，拼音向内收一点做到视觉对齐 */
  margin-inline: 0.12em;
}
#intro .logo-wrap {
  display: inline-flex;
  flex-direction: column;
  text-align: center;
}
#intro .logo-sub {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  margin-inline: 0.22em;
  font-size: clamp(0.85rem, 2.6vw, 1.5rem);
  font-weight: 600;
  color: #fff;
  opacity: 0;
  animation: introIn 1.2s cubic-bezier(0.2, 0.8, 0.2, 1) 0.25s forwards;
}

.hero-inner { position: relative; z-index: 2; }

/* ---------- 产品照片舞台 ---------- */
.device-photo {
  position: relative;
  z-index: 2;
  width: 100%;
  border-radius: 26px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.08);
  background: #f4f6f9;
}
.device-photo img {
  width: 100%;
  display: block;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.device-photo:hover img { transform: scale(1.035); }
.variant-picker {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 12px;
  margin-top: 20px;
  justify-content: center;
}
.variant {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 20px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink-dim);
  font-family: inherit;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.3s;
}
.variant:hover { border-color: rgba(53, 232, 162, 0.4); color: var(--ink); }
.variant.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(53, 232, 162, 0.07);
}
.variant .dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
}
.dot-black { background: linear-gradient(135deg, #3a3d44, #101216); }
.dot-steel { background: linear-gradient(135deg, #f2f5f9, #9aa3b2); }

/* ---------- 场景大图带 ---------- */
.scene-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: clamp(50px, 7vw, 90px);
}
.scene-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 4.6;
}
.scene-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.scene-card:hover img { transform: scale(1.045); }
.scene-card figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 40px 26px 20px;
  background: linear-gradient(180deg, transparent, rgba(3, 4, 7, 0.82));
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--ink);
}

/* ---------- 智造工厂 ---------- */
.factory-sec { background: var(--bg); border-top: 1px solid var(--line); }
.factory-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 18px;
  align-items: stretch;
}
.factory-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.factory-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.factory-card:hover img { transform: scale(1.04); }
.factory-card figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 40px 24px 18px;
  background: linear-gradient(180deg, transparent, rgba(3, 4, 7, 0.85));
  font-size: 0.9rem;
  letter-spacing: 0.14em;
}
.factory-card.tall { min-height: 520px; }
.factory-side { display: flex; flex-direction: column; gap: 18px; }
.factory-side .factory-card { flex: 1; min-height: 280px; }
.factory-points {
  display: grid;
  gap: 12px;
}
.f-point {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  transition: border-color 0.3s;
}
.f-point:hover { border-color: rgba(53, 232, 162, 0.4); }
.f-point b { font-size: 0.98rem; }
.f-point span { color: var(--muted); font-size: 0.8rem; text-align: right; }

/* ---------- 证书墙 ---------- */
.honor-sec {
  background:
    radial-gradient(900px 480px at 15% 0%, rgba(53, 232, 162, 0.06), transparent 60%),
    var(--bg-2);
  border-top: 1px solid var(--line);
}
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.cert-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.4s, box-shadow 0.4s;
}
.cert-card:hover {
  transform: translateY(-8px);
  border-color: rgba(53, 232, 162, 0.45);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}
.cert-card .cert-img {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: #0d1017;
}
.cert-card .cert-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top;
}
.cert-card.wide { grid-column: span 2; }
.cert-card.wide .cert-img { aspect-ratio: auto; height: 100%; max-height: 420px; }
.cert-card figcaption { padding: 16px 20px 18px; }
.cert-card figcaption b { display: block; font-size: 0.98rem; margin-bottom: 4px; }
.cert-card figcaption span { color: var(--muted); font-size: 0.78rem; line-height: 1.6; display: block; }
.cert-card.wide { display: grid; grid-template-rows: 1fr auto; }

/* ---------- 灯箱 ---------- */
.zoomable { cursor: zoom-in; }
#lightbox {
  position: fixed;
  inset: 0;
  z-index: 10002;
  background: rgba(2, 3, 5, 0.92);
  backdrop-filter: blur(14px);
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s, visibility 0.35s;
}
#lightbox.open { opacity: 1; visibility: visible; }
#lightbox img {
  max-width: 94vw;
  max-height: 92vh;
  border-radius: 10px;
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.8);
  transform: scale(0.94);
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
  cursor: zoom-out;
}
#lightbox.open img { transform: scale(1); }
#lbClose {
  position: absolute;
  top: 22px; right: 30px;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.3s;
  line-height: 1;
}
#lbClose:hover { background: var(--accent); color: #04140d; border-color: var(--accent); }

/* ---------- v2 响应式 ---------- */
@media (max-width: 960px) {
  .factory-grid { grid-template-columns: 1fr; }
  .factory-card.tall { min-height: 380px; }
  .cert-grid { grid-template-columns: 1fr 1fr; }
  .cert-card.wide { grid-column: span 2; }
  .scene-band { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; }
}
@media (max-width: 560px) {
  .cert-grid { grid-template-columns: 1fr; }
  .cert-card.wide { grid-column: span 1; }
  .f-point { flex-direction: column; gap: 4px; }
  .f-point span { text-align: left; }

  /* --- 手机端整体密度优化 --- */
  .wrap { padding-block: 64px; }
  .sec-head { margin-bottom: 36px; }
  .sec-head h2 { font-size: 1.72rem; letter-spacing: 0; }
  .sec-head p { font-size: 0.92rem; }

  .nav { padding: 14px 18px; }
  .nav.scrolled { padding: 10px 18px; }
  .brand-txt b { font-size: 1.3rem; }
  .brand-txt i { font-size: 0.54rem; }

  .hero { padding: 96px 22px 110px; }
  .hero h1 { font-size: 2.5rem; line-height: 1.22; }
  .hero .sub { font-size: 0.95rem; margin-bottom: 36px; }
  .kicker { font-size: 0.7rem; letter-spacing: 0.22em; }
  .hero-actions { gap: 12px; }
  .btn { padding: 13px 26px; font-size: 0.9rem; }
  .scroll-hint { bottom: 22px; }

  .marquee { padding: 13px 0; }
  .marquee-track { font-size: 0.74rem; gap: 40px; }

  .stats .wrap { padding-block: 48px; gap: 28px 16px; }
  .stat { padding-left: 16px; }
  .stat .num { font-size: 1.9rem; }
  .stat .label { font-size: 0.78rem; margin-top: 6px; }

  .product-info h3 { font-size: 1.55rem; }
  .product-info > p { font-size: 0.92rem; margin-bottom: 26px; }
  .spec-grid { gap: 10px; margin-bottom: 28px; }
  .spec { padding: 14px 16px; border-radius: 16px; }
  .spec .v { font-size: 1.15rem; }
  .spec .k { font-size: 0.74rem; }
  .variant { padding: 9px 16px; font-size: 0.82rem; }

  .scene-card { aspect-ratio: 4 / 4.2; border-radius: 18px; }
  .scene-card figcaption { padding: 30px 18px 14px; font-size: 0.85rem; }

  .tech-card { padding: 26px 22px; }
  .tech-card h4 { font-size: 1.05rem; }
  .tech-card p { font-size: 0.85rem; }

  .factory-card.tall { min-height: 300px; }
  .factory-side .factory-card { min-height: 220px; }
  .f-point { padding: 14px 18px; }
  .f-point b { font-size: 0.92rem; }

  .cert-card figcaption { padding: 13px 16px 15px; }
  .cert-card figcaption b { font-size: 0.92rem; }

  .green-copy h2 { font-size: 1.7rem; }
  .eco-card { padding: 16px 18px; gap: 14px; }
  .eco-card .big { font-size: 1.5rem; min-width: 74px; }
  .eco-card .desc { font-size: 0.85rem; }

  .timeline { padding-left: 30px; }
  .tl-item::before { left: -27px; }
  .tl-item .year { font-size: 1.4rem; }
  .tl-item h4 { font-size: 1rem; }
  .tl-item p { font-size: 0.88rem; }

  .contact-sec h2 { font-size: 1.8rem; }
  .c-card { padding: 20px; }
  .foot-inner { justify-content: center; text-align: center; }

  #lbClose { top: 14px; right: 16px; width: 40px; height: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}