/* ============================================================
   小橙时代 · AI 智能眼镜集成商 官网
   主题：深空科技蓝 + 橙色高光（蓝橙撞色，扣品牌"橙"字）
   ============================================================ */

:root {
    --bg-0: #04060f; --bg-1: #070b1c; --bg-2: #0c1230;
    --blue: #2e6bff; --cyan: #16e0ff;
    --orange: #ff7a18; --orange-2: #ffab4d;
    --text: #eaf0ff; --muted: #93a0c8;
    --line: rgba(255,255,255,0.09);
    --glass: rgba(255,255,255,0.04);
    --glass-strong: rgba(255,255,255,0.07);
    --radius: 18px; --maxw: 1200px;
    --ease: cubic-bezier(0.22,1,0.36,1);
    font-family: "Noto Sans SC", -apple-system, "Microsoft YaHei", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body { background: var(--bg-0); color: var(--text); line-height: 1.6; overflow-x: clip; position: relative; min-height: 100vh; }
/* 注：横向溢出用 clip 而非 hidden —— hidden 会让 body 变成滚动容器，导致产品区 position:sticky 钉住失效 */
img { display: block; max-width: 100%; }
@media (hover: hover) { body { cursor: none; } a, button, .tilt, .magnetic { cursor: none; } }

/* ===== 鼠标光晕 ===== */
.cursor-glow {
    position: fixed; top: 0; left: 0; width: 26px; height: 26px; border-radius: 50%;
    background: radial-gradient(circle, rgba(255,122,24,0.9), rgba(255,122,24,0) 70%);
    box-shadow: 0 0 24px 6px rgba(255,122,24,0.35);
    pointer-events: none; z-index: 9999; transform: translate(-50%,-50%);
    transition: width 0.25s, height 0.25s, background 0.25s; mix-blend-mode: screen;
}
.cursor-glow.big { width: 60px; height: 60px; background: radial-gradient(circle, rgba(22,224,255,0.5), transparent 70%); }
@media (hover: none) { .cursor-glow { display: none; } }

/* ===== 滚动进度条 ===== */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 9998;
    background: linear-gradient(90deg, var(--orange), var(--cyan)); box-shadow: 0 0 12px rgba(255,122,24,0.6); }

/* ===== 动态背景 ===== */
#starfield { position: fixed; inset: 0; z-index: -3; display: block; }
.bg-orbs { position: fixed; inset: 0; z-index: -2; pointer-events: none; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5; animation: float 18s ease-in-out infinite; }
.orb-blue { width: 520px; height: 520px; background: var(--blue); top: -140px; left: -120px; }
.orb-cyan { width: 420px; height: 420px; background: var(--cyan); bottom: -160px; right: -80px; animation-delay: -6s; }
.orb-orange { width: 360px; height: 360px; background: var(--orange); top: 40%; right: 18%; opacity: 0.32; animation-delay: -11s; }
@keyframes float { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(40px,-40px) scale(1.12); } }
.bg-grid { position: fixed; inset: 0; z-index: -1;
    background-image: linear-gradient(rgba(46,107,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(46,107,255,0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 25%, #000 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 25%, #000 40%, transparent 100%); }

/* ===== 通用 ===== */
.section { max-width: var(--maxw); margin: 0 auto; padding: 110px 24px; position: relative; }
.section-head { text-align: center; max-width: 780px; margin: 0 auto 60px; }
.kicker { display: inline-block; font-family: "Orbitron", sans-serif; letter-spacing: 3px; font-size: 12px;
    color: var(--cyan); padding: 6px 14px; border: 1px solid rgba(22,224,255,0.3); border-radius: 100px;
    margin-bottom: 18px; background: rgba(22,224,255,0.06); }
.section-head h2 { font-size: clamp(26px,4vw,46px); font-weight: 900; line-height: 1.22; }
.section-head p { color: var(--muted); margin-top: 16px; font-size: 16px; }
.gradient-text { background: linear-gradient(100deg, var(--orange) 0%, var(--orange-2) 40%, var(--cyan) 100%);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.glass { background: var(--glass); border: 1px solid var(--line);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-radius: var(--radius); }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 13px 26px;
    border-radius: 100px; font-size: 15px; font-weight: 500; text-decoration: none; border: 1px solid transparent;
    transition: transform 0.25s var(--ease), box-shadow 0.3s var(--ease), background 0.3s; will-change: transform; }
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-lg { padding: 16px 38px; font-size: 17px; }
.btn-primary { background: linear-gradient(100deg, var(--orange), var(--orange-2)); color: #1a0d00; font-weight: 700;
    box-shadow: 0 8px 30px rgba(255,122,24,0.35); }
.btn-primary:hover { box-shadow: 0 14px 44px rgba(255,122,24,0.6); }
.btn-ghost { background: rgba(255,255,255,0.04); color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* ===== 导航 ===== */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; transition: background 0.4s, backdrop-filter 0.4s, border-color 0.4s; border-bottom: 1px solid transparent; }
.nav.scrolled { background: rgba(6,9,22,0.72); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom-color: var(--line); }
.nav-inner { max-width: var(--maxw); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 15px 24px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.logo-img { width: 40px; height: 40px; border-radius: 10px; object-fit: cover; background: #fff;
    box-shadow: 0 0 14px rgba(255,122,24,0.45), 0 2px 8px rgba(0,0,0,0.4); transition: transform 0.3s var(--ease), box-shadow 0.3s; }
.logo:hover .logo-img { transform: scale(1.08) rotate(-4deg); box-shadow: 0 0 22px rgba(255,122,24,0.7), 0 2px 10px rgba(0,0,0,0.4); }
.logo-text { font-weight: 900; font-size: 20px; display: flex; flex-direction: column; line-height: 1; }
.logo-text em { font-family: "Orbitron"; font-style: normal; font-size: 9px; letter-spacing: 2px; color: var(--muted); margin-top: 3px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 15px; position: relative; transition: color 0.3s; }
.nav-links a::after { content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px; background: var(--orange); transition: width 0.3s var(--ease); }
.nav-links a:hover { color: var(--text); } .nav-links a:hover::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.lang-toggle { background: rgba(255,255,255,0.05); border: 1px solid var(--line); color: var(--text); border-radius: 100px;
    padding: 7px 12px; font-size: 13px; display: flex; gap: 3px; align-items: center; transition: border-color 0.3s; }
.lang-toggle:hover { border-color: var(--cyan); } .lang-toggle .lang-sep { color: var(--muted); }
.lang-toggle .active { color: var(--orange); font-weight: 700; }
.nav-burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; }
.nav-burger span { width: 24px; height: 2px; background: var(--text); transition: 0.3s; }

/* ===== Hero ===== */
.hero { max-width: var(--maxw); margin: 0 auto; min-height: 100vh; display: grid; grid-template-columns: 1.05fr 0.95fr;
    align-items: center; gap: 40px; padding: 120px 24px 70px; position: relative; }
.hero-badge { display: inline-block; font-size: 13px; color: var(--orange-2); background: rgba(255,122,24,0.1);
    border: 1px solid rgba(255,122,24,0.3); padding: 7px 16px; border-radius: 100px; margin-bottom: 24px; }
.hero-title { font-size: clamp(40px,6.2vw,80px); font-weight: 900; line-height: 1.06; letter-spacing: -1px; }
.hero-title .line { display: block; }
.hero-sub { color: var(--muted); font-size: clamp(15px,1.6vw,18px); margin: 26px 0 34px; max-width: 520px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 48px; }
.hero-stats .stat { display: flex; flex-direction: column; }
.hero-stats b { font-family: "Orbitron"; font-size: clamp(24px,3vw,32px); font-weight: 700;
    background: linear-gradient(120deg, var(--orange), var(--orange-2)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-stats small { color: var(--muted); font-size: 13px; margin-top: 4px; }
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; min-height: 440px; }
.hero-photo { position: relative; width: 100%; max-width: 520px; border-radius: 20px; overflow: hidden; z-index: 3;
    border: 1px solid var(--line); box-shadow: 0 30px 80px rgba(0,0,0,0.5); }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; }
.hero-scan { position: absolute; inset: 0; background: linear-gradient(180deg, transparent, rgba(22,224,255,0.25), transparent);
    height: 40%; animation: scan 4s ease-in-out infinite; mix-blend-mode: screen; }
@keyframes scan { 0%,100% { transform: translateY(-60%); opacity: 0; } 50% { transform: translateY(180%); opacity: 1; } }
.hero-ring { position: absolute; width: 125%; aspect-ratio: 1; border-radius: 50%; border: 1px solid rgba(22,224,255,0.18);
    box-shadow: inset 0 0 60px rgba(46,107,255,0.15); animation: pulse 5s ease-in-out infinite; z-index: 1; }
@keyframes pulse { 0%,100% { transform: scale(1); opacity: 0.6; } 50% { transform: scale(1.06); opacity: 1; } }
.ph-glow { position: absolute; width: 70%; height: 70%; border-radius: 50%;
    background: radial-gradient(circle, rgba(255,122,24,0.35), transparent 70%); filter: blur(45px); z-index: 0; }
.float-tag { position: absolute; z-index: 4; padding: 8px 14px; border-radius: 100px; font-size: 13px; font-weight: 500;
    background: rgba(6,9,22,0.75); border: 1px solid var(--line); backdrop-filter: blur(8px); color: var(--text);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4); animation: bob 4s ease-in-out infinite; }
.tag-1 { top: 12%; left: -6%; animation-delay: 0s; }
.tag-2 { top: 46%; right: -10%; animation-delay: -1.3s; }
.tag-3 { bottom: 12%; left: 2%; animation-delay: -2.6s; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.scroll-hint { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column;
    align-items: center; gap: 8px; color: var(--muted); text-decoration: none; font-size: 12px; }
.scroll-hint span { width: 22px; height: 36px; border: 1.5px solid var(--muted); border-radius: 20px; position: relative; }
.scroll-hint span::after { content: ""; position: absolute; top: 7px; left: 50%; transform: translateX(-50%); width: 4px; height: 8px;
    border-radius: 4px; background: var(--cyan); animation: scrollDot 1.6s infinite; }
@keyframes scrollDot { 0% { opacity: 0; top: 6px; } 40% { opacity: 1; } 100% { opacity: 0; top: 18px; } }

/* ===== 3D 倾斜卡片 ===== */
.tilt { transform-style: preserve-3d; transition: transform 0.3s var(--ease); will-change: transform; }

/* ===== 品牌卡片 ===== */
.brand-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.brand-card { padding: 34px 30px; position: relative; overflow: hidden; transition: transform 0.4s var(--ease), border-color 0.4s; }
.brand-card:hover { border-color: rgba(255,122,24,0.4); }
.bc-num { font-family: "Orbitron"; font-size: 46px; font-weight: 900; color: rgba(255,122,24,0.18); position: absolute; top: 14px; right: 20px; }
.brand-card h3 { font-size: 21px; margin-bottom: 12px; position: relative; z-index: 1; }
.brand-card p { color: var(--muted); font-size: 15px; position: relative; z-index: 1; }

/* ===== 产品系列 ===== */
.product-row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; margin-bottom: 90px; }
.product-row.reverse .product-media { order: 2; }
.product-media { position: relative; }
.pm-frame { border-radius: 20px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 24px 60px rgba(0,0,0,0.45);
    aspect-ratio: 4/3; background: var(--bg-2); }
.pm-frame img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.product-media:hover .pm-frame img { transform: scale(1.06); }
.pm-badge { position: absolute; top: 16px; left: 16px; background: linear-gradient(100deg, var(--orange), var(--orange-2));
    color: #1a0d00; font-weight: 700; font-size: 13px; padding: 6px 14px; border-radius: 100px; box-shadow: 0 6px 18px rgba(255,122,24,0.4); }
.p-idx { font-family: "Orbitron"; font-size: 15px; color: var(--cyan); letter-spacing: 2px; }
.product-info h3 { font-size: clamp(24px,3vw,34px); font-weight: 900; margin: 10px 0 12px; }
.p-slogan { color: var(--orange-2); font-size: 17px; font-style: italic; margin-bottom: 22px; }
.p-points { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.p-points li { position: relative; padding-left: 28px; color: var(--muted); font-size: 15px; }
.p-points li::before { content: "◆"; position: absolute; left: 0; color: var(--orange); font-size: 12px; top: 4px; }

/* ===== 功能网格 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 18px; }
.feature-card { padding: 26px 20px; text-align: center; transition: transform 0.4s var(--ease), border-color 0.4s; }
.feature-card:hover { transform: translateY(-8px); border-color: rgba(255,122,24,0.4); }
.feat-ico { font-size: 30px; display: block; margin-bottom: 14px; }
.feature-card h4 { font-size: 16px; margin-bottom: 6px; }
.feature-card p { color: var(--muted); font-size: 13px; }

/* ===== 特色技术条 ===== */
.tech-strip { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-top: 44px; padding: 34px;
    border-radius: var(--radius); background: radial-gradient(120% 160% at 50% 0%, rgba(46,107,255,0.12), transparent 60%), var(--glass); border: 1px solid var(--line); }
.tech-item { text-align: center; }
.tech-item b { display: block; font-family: "Orbitron"; font-size: clamp(20px,2.4vw,30px); color: var(--orange); margin-bottom: 8px; }
.tech-item span { color: var(--muted); font-size: 13.5px; line-height: 1.5; }

/* ===== 应用场景（滚动跑马灯）===== */
.scene-track { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.scene-chip { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 100px;
    background: var(--glass); border: 1px solid var(--line); font-size: 15px; transition: transform 0.3s var(--ease), border-color 0.3s, color 0.3s; }
.scene-chip:hover { transform: translateY(-5px) scale(1.05); border-color: var(--orange); color: var(--orange-2); }

/* ===== C 端 CTA ===== */
.c-cta-inner { padding: 66px 40px; text-align: center;
    background: radial-gradient(120% 140% at 50% 0%, rgba(255,122,24,0.14), transparent 55%), var(--glass-strong); }
.c-cta-inner h2 { font-size: clamp(26px,4vw,44px); font-weight: 900; }
.c-cta-inner p { color: var(--muted); margin: 14px 0 30px; }

/* ===== B 端 招商（视觉隔离：不同底色 + 上下分隔线）===== */
.biz { position: relative; padding: 100px 24px; margin-top: 40px;
    background: linear-gradient(180deg, rgba(46,107,255,0.10), rgba(4,6,15,0) 30%), linear-gradient(0deg, rgba(255,122,24,0.06), transparent 40%);
    border-top: 1px solid rgba(46,107,255,0.25); border-bottom: 1px solid rgba(46,107,255,0.25); }
.biz::before { content: "BUSINESS / 招商"; position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
    font-family: "Orbitron"; font-size: 11px; letter-spacing: 4px; color: rgba(46,107,255,0.5); }
.biz-inner { max-width: var(--maxw); margin: 0 auto; }
.biz-kicker { color: var(--orange-2); border-color: rgba(255,122,24,0.3); background: rgba(255,122,24,0.06); }
.coop-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 18px; margin-bottom: 34px; }
.coop-card { padding: 28px 20px; text-align: center; border-radius: var(--radius); background: rgba(46,107,255,0.06);
    border: 1px solid rgba(46,107,255,0.2); transition: transform 0.4s var(--ease), border-color 0.4s, background 0.4s; }
.coop-card:hover { transform: translateY(-8px); border-color: var(--cyan); background: rgba(46,107,255,0.12); }
.cc-ico { font-size: 30px; display: block; margin-bottom: 12px; }
.coop-card h4 { font-size: 16px; margin-bottom: 6px; } .coop-card p { color: var(--muted); font-size: 13px; }
.coop-advantages { display: flex; flex-wrap: wrap; gap: 14px 30px; justify-content: center; margin-bottom: 40px; color: var(--muted); font-size: 15px; }
.coop-advantages span { color: #cfe0ff; }
.biz-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== 企业实力 ===== */
.honor-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.honor-card { padding: 32px 24px; text-align: center; transition: transform 0.4s var(--ease), border-color 0.4s; }
.honor-card:hover { border-color: rgba(255,122,24,0.4); }
.hc-ico { font-size: 36px; display: block; margin-bottom: 14px; }
.honor-card h4 { font-size: 17px; margin-bottom: 8px; } .honor-card p { color: var(--muted); font-size: 13.5px; }

/* ===== 页脚 ===== */
.footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 50px 24px 30px; }
.footer-inner { max-width: var(--maxw); margin: 0 auto; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; }
.footer-brand .logo { color: var(--text); } .footer-brand .logo-text { color: var(--text); }
.footer-slogan { color: var(--orange-2); margin-top: 14px; font-size: 15px; font-weight: 500; }
.footer-info p { color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.footer-info b { color: var(--text); font-weight: 500; }
.footer-tags { color: var(--cyan) !important; font-size: 13px !important; margin-top: 12px; }
.footer-copy { text-align: center; color: var(--muted); font-size: 13px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); max-width: var(--maxw); margin-left: auto; margin-right: auto; }

/* ===== 滚动进场动画 ===== */
.reveal { opacity: 0; transform: translateY(60px) scale(0.97); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .feature-grid { grid-template-columns: repeat(3,1fr); }
    .coop-grid { grid-template-columns: repeat(3,1fr); }
    .honor-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; text-align: center; }
    .hero-sub { margin-left: auto; margin-right: auto; }
    .hero-cta, .hero-stats { justify-content: center; }
    .hero-visual { order: -1; min-height: 340px; }
    .brand-cards { grid-template-columns: 1fr; }
    .product-row, .product-row.reverse { grid-template-columns: 1fr; gap: 28px; margin-bottom: 60px; }
    .product-row.reverse .product-media { order: 0; }
    .tech-strip { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 640px) {
    body { cursor: auto; } .cursor-glow { display: none; }
    .section { padding: 70px 18px; } .biz { padding: 70px 18px; }
    .nav-links { display: none; } .nav-burger { display: flex; }
    .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 62px; left: 0; right: 0;
        background: rgba(6,9,22,0.97); padding: 20px 24px; gap: 18px; border-bottom: 1px solid var(--line); }
    .feature-grid { grid-template-columns: repeat(2,1fr); }
    .coop-grid { grid-template-columns: repeat(2,1fr); }
    .honor-grid { grid-template-columns: 1fr; }
    .hero-stats { gap: 20px; } .nav-actions .btn-sm { display: none; }
    .float-tag { display: none; }
}
/* 注：宣传站动效为核心卖点，不跟随系统"减少动态效果"设置，始终播放动画 */

/* ============================================================
   动效升级：灯箱 / 水印 / 逐字标题 / 产品横向卷轴
   ============================================================ */

/* ===== 图片点击放大 Lightbox ===== */
.pm-frame, .hero-photo { cursor: zoom-in; }
.pm-zoom { position: absolute; right: 14px; bottom: 14px; z-index: 3; font-size: 12px; color: var(--text);
    background: rgba(4,6,15,0.7); border: 1px solid var(--line); padding: 6px 12px; border-radius: 100px;
    backdrop-filter: blur(6px); opacity: 0; transform: translateY(6px); transition: opacity 0.3s, transform 0.3s; pointer-events: none; }
.product-media:hover .pm-zoom, .hero-photo:hover .pm-zoom { opacity: 1; transform: none; }
.lightbox { position: fixed; inset: 0; z-index: 1000; background: rgba(2,4,10,0.9);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.35s; }
.lightbox.open { opacity: 1; pointer-events: auto; }
.lb-scroll { max-height: 92vh; overflow-y: auto; -webkit-overflow-scrolling: touch; border-radius: 14px; box-shadow: 0 30px 90px rgba(0,0,0,0.7);
    width: min(92vw, 860px); transform: scale(0.92) translateY(24px); transition: transform 0.4s var(--ease); scrollbar-width: thin; }
.lightbox.open .lb-scroll { transform: none; }
.lb-scroll img { width: 100%; display: block; }
.lb-close { position: absolute; top: 20px; right: 24px; width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--line);
    background: rgba(255,255,255,0.08); color: var(--text); font-size: 18px; z-index: 2; cursor: pointer; transition: background 0.3s, transform 0.3s; }
.lb-close:hover { background: rgba(255,122,24,0.85); transform: rotate(90deg); }
body.lb-lock { overflow: hidden; }

/* ===== 大字背景水印（随滚动视差）===== */
.wm { position: absolute; top: 36px; left: 50%; transform: translateX(-50%); font-family: "Orbitron";
    font-weight: 900; font-size: clamp(70px, 12vw, 180px); letter-spacing: 8px; color: rgba(255,255,255,0.035);
    white-space: nowrap; pointer-events: none; z-index: 0; user-select: none; will-change: transform; }

/* ===== 标题逐字弹出 ===== */
h1 .ch, h2 .ch { display: inline-block; transform: translateY(115%) rotate(6deg); opacity: 0;
    transition: transform 0.7s var(--ease), opacity 0.5s; will-change: transform; }
.chs-in .ch { transform: none; opacity: 1; }
/* 渐变色标题行不拆字，改用从左到右擦除揭示（避免拆字后渐变失效） */
.hero-title .line.gradient-text { clip-path: inset(0 100% 0 0); transition: clip-path 1s var(--ease) 0.35s; }
.hero-title .line.gradient-text.chs-in { clip-path: inset(0 0 0 0); }

/* ===== 五大产品横向卷轴（仅桌面端，滚动钉住+横滑）===== */
@media (min-width: 901px) {
    .section.products { max-width: none; padding-left: 0; padding-right: 0; }
    .products .section-head { padding: 0 24px; margin-bottom: 10px; }
    .products-pin { height: 460vh; position: relative; }
    .products-sticky { position: sticky; top: 0; height: 100vh; overflow: hidden;
        display: flex; flex-direction: column; justify-content: center; }
    .products-track { display: flex; will-change: transform; }
    .products-track .product-row, .products-track .product-row.reverse {
        width: 100vw; flex: 0 0 100vw; margin-bottom: 0;
        padding-left: max(7vw, calc((100vw - 1200px) / 2)); padding-right: max(7vw, calc((100vw - 1200px) / 2));
        opacity: 1; transform: none; }
    .slide-dots { display: flex; gap: 10px; justify-content: center; margin-top: 30px; }
    .slide-dots i { width: 34px; height: 4px; border-radius: 4px; background: rgba(255,255,255,0.15);
        cursor: pointer; transition: background 0.3s, width 0.3s; }
    .slide-dots i.on { background: var(--orange); width: 54px; box-shadow: 0 0 10px rgba(255,122,24,0.6); }
}
@media (max-width: 900px) {
    .slide-dots { display: none; }
    .wm { font-size: 58px; top: 22px; letter-spacing: 4px; }
}

/* ===== 手机端体验加强 ===== */
@media (max-width: 640px) {
    .nav-links.open a { font-size: 17px; padding: 6px 0; }
    .hero { padding-top: 96px; min-height: auto; }
    .hero-visual { min-height: 0; }
    .hero-visual .hero-photo { max-width: 320px; }
    .hero-cta .btn { flex: 1 1 42%; min-width: 140px; }
    .lb-close { top: 14px; right: 14px; width: 44px; height: 44px; }
    .lb-scroll { width: 94vw; max-height: 88vh; border-radius: 10px; }
    .pm-zoom { opacity: 1; transform: none; }
    .scroll-hint { display: none; }
}