/* ============================================================
   RiChing International Website — style.css
   主题：深蓝 + 橙（与 FB 主页视觉一致）· 全动态效果
   ============================================================ */
:root {
  --navy-900: #07182f;
  --navy-800: #0a2244;
  --navy-700: #0d2a4d;
  --navy-600: #123763;
  --orange: #f0862c;
  --orange-hi: #ffa94d;
  --ink: #14243a;
  --gray: #5b6b80;
  --line: #e4eaf2;
  --bg: #f5f8fc;
  --card: #ffffff;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(10, 34, 68, .10);
  --shadow-lg: 0 24px 60px rgba(10, 34, 68, .18);
  --tr: all .35s cubic-bezier(.22, .68, .35, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink); background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- 滚动进度条 ---------- */
#progress-bar {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--orange), var(--orange-hi));
  z-index: 2000; transition: width .1s linear;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; border: none;
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: var(--tr); white-space: nowrap;
}
.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-orange {
  background: linear-gradient(135deg, var(--orange), #e97616);
  color: #fff; box-shadow: 0 8px 22px rgba(240, 134, 44, .35);
}
.btn-orange:hover { transform: translateY(-3px) scale(1.03); box-shadow: 0 14px 30px rgba(240, 134, 44, .5); }
.btn-ghost {
  background: rgba(255, 255, 255, .08); color: #fff;
  border: 1px solid rgba(255, 255, 255, .35); backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .18); transform: translateY(-3px); }
.btn-outline {
  background: #fff; color: var(--navy-700);
  border: 1.5px solid var(--navy-700);
}
.btn-outline:hover { background: var(--navy-700); color: #fff; transform: translateY(-2px); }

/* ---------- 导航 ---------- */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: var(--tr);
}
#navbar.scrolled {
  background: rgba(7, 24, 47, .88); backdrop-filter: blur(14px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .25);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 26px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 44px; height: 44px; border-radius: 10px; object-fit: cover; box-shadow: 0 4px 14px rgba(0,0,0,.3); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { color: #fff; font-size: 19px; letter-spacing: 3px; }
.brand-text span { color: var(--orange-hi); font-size: 9.5px; letter-spacing: 1.6px; font-weight: 600; }
#nav-links { display: flex; gap: 4px; margin-left: auto; }
#nav-links a {
  color: rgba(255, 255, 255, .85); font-size: 14px; font-weight: 500;
  padding: 8px 13px; border-radius: 8px; transition: var(--tr);
}
#nav-links a:hover, #nav-links a.active {
  color: var(--orange-hi); background: rgba(255, 255, 255, .08);
}
#nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 26px; cursor: pointer; }

/* ---------- HERO ---------- */
#home {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden;
  background: linear-gradient(160deg, var(--navy-900), var(--navy-700) 55%, #10315c);
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 500px at 15% 20%, rgba(240, 134, 44, .16), transparent 60%),
    radial-gradient(800px 500px at 85% 75%, rgba(38, 108, 205, .35), transparent 60%);
  animation: bgShift 12s ease-in-out infinite alternate;
}
@keyframes bgShift {
  0% { transform: scale(1) translateY(0); opacity: .9; }
  100% { transform: scale(1.08) translateY(-14px); opacity: 1; }
}
#hero-particles { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-content { position: relative; z-index: 2; padding: 110px 24px 60px; max-width: 980px; }
.hero-badge {
  display: inline-block; padding: 8px 18px; border-radius: 999px;
  background: rgba(255, 255, 255, .09); border: 1px solid rgba(255, 255, 255, .22);
  color: #cfe0f5; font-size: 12.5px; letter-spacing: 1.4px; margin-bottom: 26px;
  backdrop-filter: blur(6px);
}
#home h1 {
  color: #fff; font-size: clamp(38px, 6vw, 68px); font-weight: 800;
  line-height: 1.12; letter-spacing: -.5px; margin-bottom: 22px;
}
.gradient-text {
  background: linear-gradient(90deg, var(--orange-hi), var(--orange), #ffd9ad);
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shine 4s linear infinite;
}
@keyframes shine { to { background-position: 200% center; } }
.hero-sub { color: #b9cbe4; font-size: clamp(15px, 1.8vw, 18px); line-height: 1.75; margin-bottom: 36px; }
.hero-sub b { color: var(--orange-hi); }
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 入场动画 */
.animate-in { opacity: 0; transform: translateY(28px); animation: fadeUp .9s cubic-bezier(.2,.7,.3,1) forwards; }
.d1 { animation-delay: .15s; } .d2 { animation-delay: .3s; } .d3 { animation-delay: .45s; }
@keyframes fadeUp { to { opacity: 1; transform: none; } }

.scroll-hint {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  width: 26px; height: 44px; border: 2px solid rgba(255,255,255,.45); border-radius: 14px;
}
.scroll-hint span {
  position: absolute; top: 8px; left: 50%; width: 4px; height: 9px; margin-left: -2px;
  background: var(--orange-hi); border-radius: 3px;
  animation: scrollDot 1.6s ease-in-out infinite;
}
@keyframes scrollDot { 0%{opacity:1; transform:translateY(0)} 100%{opacity:0; transform:translateY(16px)} }

/* ---------- 统计条 ---------- */
#stats { background: #fff; border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 44px 24px; }
.stat { text-align: center; }
.stat-num { font-size: clamp(30px, 4vw, 46px); font-weight: 800; color: var(--navy-700); }
.stat-num::after { content: "+"; color: var(--orange); font-size: .7em; }
.stat-label { color: var(--gray); font-size: 13.5px; margin-top: 4px; letter-spacing: .4px; }

/* ---------- Section 头 ---------- */
section { position: relative; }
#catalog, #certs, #about { padding: 90px 0; }
.section-head { text-align: center; margin-bottom: 50px; }
.section-head h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; color: var(--navy-800); }
.section-head p { color: var(--gray); margin-top: 10px; font-size: 16px; }

/* ---------- 品类大卡片 ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cat-card {
  position: relative; border-radius: var(--radius); overflow: hidden; cursor: pointer;
  height: 300px; box-shadow: var(--shadow); transition: var(--tr);
  transform-style: preserve-3d; will-change: transform;
  background: var(--navy-800);
}
.cat-card:hover { transform: translateY(-8px) rotateX(3deg); box-shadow: var(--shadow-lg); }
.cat-card img.cat-img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; transition: transform .8s cubic-bezier(.2,.7,.3,1);
}
.cat-card:hover img.cat-img { transform: scale(1.12); }
.cat-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(7,24,47,.94) 0%, rgba(7,24,47,.35) 55%, rgba(7,24,47,.15) 100%);
  transition: var(--tr);
}
.cat-info { position: absolute; left: 0; right: 0; bottom: 0; padding: 24px; color: #fff; }
.cat-info .cat-count {
  display: inline-block; font-size: 11px; letter-spacing: 1px; font-weight: 700;
  color: var(--orange-hi); border: 1px solid rgba(255,169,77,.5); border-radius: 999px;
  padding: 3px 12px; margin-bottom: 10px; background: rgba(240,134,44,.12);
}
.cat-info h3 { font-size: 21px; margin-bottom: 6px; }
.cat-info p { font-size: 13.5px; color: #c3d2e8; line-height: 1.5; max-height: 0; opacity: 0; overflow: hidden; transition: var(--tr); }
.cat-card:hover .cat-info p { max-height: 70px; opacity: 1; margin-top: 4px; }
.cat-arrow {
  position: absolute; right: 20px; bottom: 22px; width: 40px; height: 40px; border-radius: 50%;
  background: var(--orange); color: #fff; display: grid; place-items: center; font-size: 18px;
  transition: var(--tr); opacity: 0; transform: translateX(-10px);
}
.cat-card:hover .cat-arrow { opacity: 1; transform: none; }
.cat-card.featured::after {
  content: "★ HOT"; position: absolute; top: 16px; right: 16px;
  background: var(--orange); color: #fff; font-size: 11px; font-weight: 800;
  padding: 5px 12px; border-radius: 999px; letter-spacing: 1px; z-index: 3;
}

/* ---------- 产品区 ---------- */
.cat-section { padding: 80px 0 30px; }
.cat-section:nth-of-type(odd) { background: #fff; border-block: 1px solid var(--line); }
.cat-section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 36px; flex-wrap: wrap; }
.cat-section-head h2 { font-size: clamp(24px, 3.4vw, 36px); color: var(--navy-800); }
.cat-section-head h2 small { display: block; font-size: 13px; color: var(--gray); font-weight: 500; margin-top: 6px; letter-spacing: 1.2px; text-transform: uppercase; }
.cat-section-head .btn { flex-shrink: 0; }

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 24px; }
.product-card {
  background: var(--card); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--line);
  transition: var(--tr); display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-lg); border-color: rgba(240,134,44,.5); }
.product-media { position: relative; aspect-ratio: 4/3; overflow: hidden; background: linear-gradient(180deg, #ffffff, #eaf0f8); }
.product-media img { width: 100%; height: 100%; object-fit: contain; padding: 10px; transition: transform .7s cubic-bezier(.2,.7,.3,1); }
.product-card:hover .product-media img { transform: scale(1.09); }
.product-tags { position: absolute; top: 12px; left: 12px; display: flex; gap: 6px; flex-wrap: wrap; }
.ptag {
  font-size: 10.5px; font-weight: 700; padding: 4px 9px; border-radius: 6px;
  background: rgba(7,24,47,.82); color: #fff; letter-spacing: .5px; backdrop-filter: blur(4px);
}
.ptag.hot { background: var(--orange); }
.video-badge {
  position: absolute; right: 12px; bottom: 12px; cursor: pointer;
  display: flex; align-items: center; gap: 7px;
  background: rgba(7,24,47,.75); color: #fff; font-size: 12px; font-weight: 600;
  padding: 8px 14px; border-radius: 999px; border: 1px solid rgba(255,255,255,.3);
  backdrop-filter: blur(6px); transition: var(--tr);
}
.video-badge:hover { background: var(--orange); transform: scale(1.06); }
.play-pulse {
  width: 8px; height: 8px; border-radius: 50%; background: var(--orange-hi);
  animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{ box-shadow: 0 0 0 0 rgba(255,169,77,.6);} 50%{ box-shadow: 0 0 0 7px rgba(255,169,77,0);} }
.product-body { padding: 18px 18px 20px; display: flex; flex-direction: column; flex: 1; }
.product-body h4 { font-size: 17px; color: var(--navy-800); margin-bottom: 4px; }
.product-body .model { font-size: 12px; color: var(--orange); font-weight: 700; letter-spacing: .8px; text-transform: uppercase; }
.spec-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0 16px; }
.spec-chips span {
  font-size: 11.5px; color: var(--navy-700); background: #eef3fa;
  border: 1px solid #dbe5f1; padding: 4px 10px; border-radius: 999px;
}
.product-actions { margin-top: auto; display: flex; gap: 10px; }
.product-actions .btn { flex: 1; justify-content: center; padding: 11px 10px; font-size: 13.5px; }
.price-btn { animation: glow 2.4s ease-in-out infinite; }
@keyframes glow {
  0%,100% { box-shadow: 0 6px 18px rgba(240,134,44,.32); }
  50% { box-shadow: 0 6px 26px rgba(240,134,44,.62); }
}

/* ---------- 认证 ---------- */
#certs { background: linear-gradient(160deg, var(--navy-900), var(--navy-700)); }
#certs .section-head h2 { color: #fff; }
#certs .section-head p { color: #a9bedd; }
.cert-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.cert-chip {
  color: #dbe7f7; border: 1px solid rgba(255,255,255,.22); border-radius: 12px;
  padding: 14px 22px; font-size: 14px; font-weight: 600; letter-spacing: .5px;
  background: rgba(255,255,255,.06); backdrop-filter: blur(4px);
  transition: var(--tr);
}
.cert-chip:hover { background: var(--orange); border-color: var(--orange); transform: translateY(-4px) scale(1.05); color: #fff; }
.cert-chip small { display: block; font-size: 10.5px; color: #9fb4d4; font-weight: 500; margin-top: 3px; letter-spacing: .3px; }
.cert-chip:hover small { color: #ffe9d1; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center; }
.about-text h2 { font-size: clamp(26px, 3.6vw, 40px); color: var(--navy-800); margin-bottom: 18px; }
.about-text p { color: var(--gray); line-height: 1.85; margin-bottom: 18px; }
.about-list { list-style: none; margin-bottom: 28px; }
.about-list li { padding: 7px 0; color: var(--ink); font-size: 15px; }
.about-visual { position: relative; }
.about-img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.about-img.small {
  position: absolute; right: -14px; bottom: -34px; width: 46%;
  border: 5px solid #fff;
  animation: floatY 5s ease-in-out infinite;
}
@keyframes floatY { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }

/* ---------- Footer ---------- */
footer { background: var(--navy-900); color: #b7c8e0; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand img { width: 46px; height: 46px; border-radius: 10px; }
.footer-brand strong { color: #fff; }
.footer-brand span { color: var(--orange-hi); }
.footer-note { margin-top: 16px; font-size: 13.5px; line-height: 1.8; color: #8ba1c2; }
footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; letter-spacing: 1px; }
footer .footer-grid a { display: block; padding: 5px 0; font-size: 13.5px; color: #9db2d1; transition: var(--tr); }
footer .footer-grid a:hover { color: var(--orange-hi); transform: translateX(5px); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); text-align: center;
  padding: 18px 24px; font-size: 12.5px; color: #7188a8;
}

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 3000; display: none;
  align-items: center; justify-content: center; padding: 24px;
  background: rgba(5, 15, 30, .72); backdrop-filter: blur(8px);
}
.modal.open { display: flex; animation: modalIn .3s ease; }
@keyframes modalIn { from { opacity: 0; } to { opacity: 1; } }
.modal-card {
  position: relative; background: #fff; border-radius: 22px;
  max-width: 560px; width: 100%; padding: 36px 34px 26px;
  box-shadow: 0 40px 100px rgba(0,0,0,.4);
  animation: cardIn .4s cubic-bezier(.2,.9,.3,1.2);
}
@keyframes cardIn { from { opacity: 0; transform: translateY(36px) scale(.94); } to { opacity: 1; transform: none; } }
.modal-close {
  position: absolute; top: 14px; right: 16px; width: 36px; height: 36px;
  border-radius: 50%; border: none; background: #eef2f8; color: var(--gray);
  font-size: 15px; cursor: pointer; transition: var(--tr);
}
.modal-close:hover { background: var(--orange); color: #fff; transform: rotate(90deg); }
.modal-head h3 { font-size: 24px; color: var(--navy-800); }
.modal-head p { color: var(--gray); font-size: 14px; margin-top: 8px; margin-bottom: 22px; line-height: 1.6; }
.contact-channels { display: grid; gap: 12px; }
.channel {
  display: flex; align-items: center; gap: 15px; padding: 14px 16px;
  border-radius: 14px; border: 1.5px solid var(--line); transition: var(--tr);
  background: #fbfcfe;
}
.channel:hover { transform: translateX(6px); box-shadow: var(--shadow); border-color: transparent; }
.ch-icon { font-size: 26px; width: 46px; height: 46px; display: grid; place-items: center; border-radius: 12px; flex-shrink: 0; }
.channel.wa:hover { background: #e7fbee; } .channel.wa .ch-icon { background: #d9f7e7; }
.channel.tel:hover { background: #eaf1fd; } .channel.tel .ch-icon { background: #dde9fb; }
.channel.mail:hover { background: #fff3e6; } .channel.mail .ch-icon { background: #ffe8cf; }
.channel.fb:hover { background: #eaf1fd; } .channel.fb .ch-icon { background: #dde9fb; }
.ch-body { display: flex; flex-direction: column; }
.ch-body b { font-size: 15px; color: var(--navy-800); }
.ch-body i { font-style: normal; font-size: 13.5px; color: var(--ink); margin-top: 2px; }
.ch-body em { font-style: normal; font-size: 11.5px; color: var(--gray); margin-top: 2px; }
.modal-tip { margin-top: 18px; font-size: 12px; color: var(--gray); text-align: center; background: #f2f6fb; border-radius: 10px; padding: 10px 12px; }

.video-card {
  position: relative; width: min(880px, 94vw); border-radius: 18px; overflow: hidden;
  background: #000; box-shadow: 0 40px 100px rgba(0,0,0,.5);
  animation: cardIn .4s cubic-bezier(.2,.9,.3,1.2);
}
.video-card video { width: 100%; max-height: 78vh; display: block; }
.video-card .modal-close { z-index: 5; background: rgba(255,255,255,.15); color: #fff; }

/* ---------- 滚动 reveal ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.7,.3,1); }
.reveal.visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .12s; } .reveal.d2 { transition-delay: .24s; } .reveal.d3 { transition-delay: .36s; }

/* 产品卡入场 */
.product-card { opacity: 0; transform: translateY(30px) scale(.97); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.3,1), box-shadow .35s, border-color .35s; }
.product-card.visible { opacity: 1; transform: none; }
.product-card.visible:hover { transform: translateY(-7px); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { margin-top: 20px; }
  #nav-links { position: fixed; top: 64px; right: 0; left: 0; flex-direction: column;
    background: rgba(7,24,47,.97); padding: 18px 24px; gap: 6px;
    transform: translateY(-140%); transition: var(--tr); }
  #nav-links.open { transform: none; }
  #nav-toggle { display: block; margin-left: auto; }
  #nav-links { margin-left: 0; }
  .nav-inner .btn-orange { display: none; }
}
@media (max-width: 640px) {
  .cat-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .about-img.small { position: static; width: 100%; margin-top: 16px; }
  .hero-content { padding-top: 90px; }
  .nav-inner { padding: 10px 16px; }
  .brand-text span { display: none; }
}

/* ============================================================
   产品详情弹窗（主图 + 场景图画廊）
   ============================================================ */
.product-media.clickable { cursor: pointer; }
.detail-hint {
  position: absolute; left: 50%; bottom: 12px; transform: translate(-50%, 8px);
  background: rgba(10,26,51,.85); color: #fff; font-size: 12px; font-weight: 600;
  padding: 6px 14px; border-radius: 999px; letter-spacing: .4px;
  opacity: 0; transition: all .35s ease; pointer-events: none; white-space: nowrap;
}
.product-media.clickable:hover .detail-hint { opacity: 1; transform: translate(-50%, 0); }

.detail-card {
  position: relative; width: min(1060px, 94vw); max-height: 88vh; overflow: auto;
  background: linear-gradient(160deg, #0d2038, #0a1730);
  border: 1px solid rgba(140,180,230,.18); border-radius: 22px;
  padding: 28px; animation: cardIn .35s cubic-bezier(.2,.8,.3,1.1);
}
.detail-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 26px; align-items: start; }
.detail-stage {
  position: relative; border-radius: 16px; overflow: hidden;
  background: linear-gradient(180deg, #ffffff, #e9eef7);
  aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center;
}
.detail-stage img { max-width: 100%; max-height: 100%; object-fit: contain; padding: 14px; transition: opacity .25s ease; }
.dt-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 42px; height: 42px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(10,26,51,.55); color: #fff; font-size: 26px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: all .25s ease; backdrop-filter: blur(4px);
}
.dt-arrow:hover { background: var(--orange); transform: translateY(-50%) scale(1.12); }
.dt-arrow.prev { left: 12px; } .dt-arrow.next { right: 12px; }
.detail-stage .dt-badge { position: absolute; top: 12px; left: 12px; margin: 0; }
.detail-stage .video-badge { position: absolute; left: 12px; bottom: 12px; z-index: 3; }
.dt-thumbs { display: flex; gap: 10px; margin-top: 12px; overflow-x: auto; padding-bottom: 4px; }
.dt-thumbs img {
  width: 86px; height: 64px; object-fit: cover; border-radius: 10px; cursor: pointer;
  border: 2px solid transparent; opacity: .65; transition: all .25s ease; flex: 0 0 auto;
  background: #fff;
}
.dt-thumbs img:hover { opacity: 1; transform: translateY(-2px); }
.dt-thumbs img.on { border-color: var(--orange); opacity: 1; box-shadow: 0 4px 14px rgba(240,134,44,.35); }

.detail-info .cat-count { display: inline-block; background: rgba(240,134,44,.16); color: var(--orange-hi);
  font-size: 11px; font-weight: 700; letter-spacing: 1.2px; padding: 4px 12px; border-radius: 999px;
  text-transform: uppercase; margin-bottom: 10px; }
.detail-info .model { color: var(--orange-hi); font-weight: 800; letter-spacing: 1.5px; font-size: 13px; }
.detail-info h3 { color: #fff; font-size: 24px; margin: 8px 0 14px; line-height: 1.3; }
.detail-info .spec-chips span { background: rgba(140,180,230,.14); color: #cfe0f4; }
.dt-note { color: #a8bdd8; font-size: 14px; line-height: 1.75; margin: 14px 0 20px; }
.detail-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.dt-tip { margin-top: 16px; color: #7e97b8; font-size: 12.5px; letter-spacing: .3px; }
.detail-info .btn-outline { background: transparent; color: #cfe0f4; border-color: rgba(140,180,230,.4); }
.detail-info .btn-outline:hover { border-color: var(--orange); color: var(--orange-hi); }

@media (max-width: 900px) {
  .detail-grid { grid-template-columns: 1fr; }
  .detail-card { padding: 18px; }
}