:root {
  --brand-primary: #14213d;
  --brand-accent: #ff7a00;
  --energy: #ff8a1c;
  --energy-deep: #d96400;
  --text: #1a1a1a;
  --muted: #666;
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --bg-dark: #0a0b10;
  --panel: #11131b;
  --border: #e5e7eb;
  --glow: 0 0 28px rgba(255,122,0,0.25);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg-dark); color: #e7ebf4; font-family: "HarmonyOS Sans SC","MiSans","OPPO Sans","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif; text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; }
img { max-width: 100%; height: auto; display: block; }
a { color: #f0f3ff; text-decoration: none; }

body { overflow-x: hidden; position: relative; }
/* 左右两侧轻微氛围光，减少空白感 */
body::before { content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(ellipse 50% 80% at 0% 50%, rgba(255,138,28,0.06), transparent 55%), radial-gradient(ellipse 50% 80% at 100% 50%, rgba(255,138,28,0.06), transparent 55%); }
#particles { position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: 0.5; }
main, header, footer { position: relative; z-index: 2; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
/* 图片风格的容器面板（仅作用于各内容section） */
.section .container { position: relative; border: 1px solid rgba(255,255,255,0.08); border-radius: 20px; padding: 22px 24px; background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02)); box-shadow: 0 12px 28px rgba(0,0,0,0.35); overflow: hidden; }
.section .container::before { content: ""; position: absolute; inset: -25% -10%; background: radial-gradient(40% 40% at 12% 18%, rgba(255,122,0,0.10), transparent), radial-gradient(35% 35% at 88% 25%, rgba(20,33,61,0.45), transparent); opacity: 0.5; pointer-events: none; }
.section .container > * { position: relative; z-index: 1; }

.site-header { border-bottom: 1px solid rgba(255,255,255,0.06); background: rgba(10,11,16,0.86); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; align-items: center; gap: 16px; padding: 12px 0; }
.main-nav { display: flex; gap: 24px; margin-left: 24px; }
.main-nav a { color: #b9bec9; font-size: 16px; font-weight: 600; transition: color .2s; letter-spacing: 0.2px; position: relative; padding-bottom: 2px; }
.main-nav a::after { content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0; background: linear-gradient(90deg, #ff7a00, #ffb870); transition: width .25s ease; border-radius: 2px; }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
.main-nav a:hover, .main-nav a.active { color: #fff; }
.logo { width: 120px; height: auto; flex-shrink: 0; }
.brand { min-width: 0; }
.brand .name { margin: 0; font-size: 20px; font-weight: 700; color: #f5f7ff; word-wrap: break-word; overflow-wrap: break-word; text-align: left; }
.brand .tagline { margin: 2px 0 0; font-size: 14px; color: #b9bec9; text-align: left; }
.cta-btn { margin-left: auto; padding: 10px 14px; background: var(--brand-accent); color: #0b0b0d; border-radius: 8px; box-shadow: var(--glow); border: 1px solid transparent; }
.cta-btn:hover { filter: brightness(1.05); }

/* 汉堡菜单按钮：桌面端隐藏 */
.nav-toggle { display: none; border: none; background: transparent; cursor: pointer; padding: 8px; width: 44px; height: 44px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; border-radius: 8px; color: #fff; transition: background .2s; }
.nav-toggle:hover { background: rgba(255,255,255,0.08); }
.nav-toggle span { display: block; width: 22px; height: 2px; background: currentColor; border-radius: 1px; transition: transform .25s ease, opacity .25s ease; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 左右两侧装饰：光点 + 竖条动画 */
.side-deco { position: fixed; inset: 0; z-index: 1; pointer-events: none; overflow: hidden; }
.side-deco-l { position: absolute; left: 0; top: 0; bottom: 0; width: min(22%, 280px); }
.side-deco-r { position: absolute; right: 0; top: 0; bottom: 0; width: min(22%, 280px); }
.side-deco .orb {
  position: absolute; width: 8px; height: 8px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,138,28,0.7) 0%, rgba(255,138,28,0.2) 50%, transparent 70%);
  box-shadow: 0 0 20px rgba(255,138,28,0.4);
  animation: orbFloat 12s ease-in-out infinite;
}
.side-deco-l .orb:nth-child(1) { left: 30%; top: 18%; animation-delay: 0s; animation-duration: 14s; }
.side-deco-l .orb:nth-child(2) { left: 60%; top: 45%; animation-delay: -3s; animation-duration: 11s; width: 6px; height: 6px; }
.side-deco-l .orb:nth-child(3) { left: 25%; top: 72%; animation-delay: -6s; animation-duration: 16s; }
.side-deco-r .orb:nth-child(1) { right: 35%; left: auto; top: 22%; animation-delay: -2s; animation-duration: 13s; }
.side-deco-r .orb:nth-child(2) { right: 55%; left: auto; top: 55%; animation-delay: -5s; animation-duration: 15s; width: 6px; height: 6px; }
.side-deco-r .orb:nth-child(3) { right: 28%; left: auto; top: 78%; animation-delay: -8s; animation-duration: 10s; }
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.85; }
  25% { transform: translate(6px, -15px) scale(1.1); opacity: 1; }
  50% { transform: translate(-4px, 8px) scale(0.95); opacity: 0.7; }
  75% { transform: translate(8px, 5px) scale(1.05); opacity: 0.9; }
}
.side-deco .streak {
  position: absolute; top: 0; bottom: 0; width: 1px;
  background: linear-gradient(180deg, transparent 0%, rgba(255,138,28,0.15) 20%, rgba(255,138,28,0.35) 50%, rgba(255,138,28,0.15) 80%, transparent 100%);
  animation: streakPulse 4s ease-in-out infinite;
}
.side-deco-l .streak { left: 20%; }
.side-deco-r .streak { right: 20%; left: auto; }
@keyframes streakPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.95); }
  50% { opacity: 1; transform: scaleY(1); }
}

.hero { background: transparent; border-bottom: none; }
.hero.dark { background: linear-gradient(135deg, rgba(10,11,16,0.78) 0%, rgba(18,21,38,0.76) 45%, rgba(10,11,16,0.82) 100%), url("assets/背景图橙色.png") center / cover no-repeat; color: #fff; border-bottom: none; position: relative; overflow: hidden; }
.hero.dark::before { content: ""; position: absolute; inset: -40% -30%; background: radial-gradient(60% 40% at 50% 0%, rgba(255,122,0,0.18), transparent), radial-gradient(35% 35% at 15% 65%, rgba(20,33,61,0.6), transparent), radial-gradient(35% 35% at 85% 45%, rgba(255,138,28,0.12), transparent); animation: drift 10s ease-in-out infinite; }
.hero.dark::after { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(120deg, rgba(255,255,255,0.04) 0 1px, transparent 1px 6px); opacity: 0.15; mix-blend-mode: screen; }
.hero-inner { padding: 88px 0; text-align: center; position: relative; z-index: 1; }
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0%; background: linear-gradient(90deg, rgba(255,122,0,0.9), rgba(255,178,112,0.9)); box-shadow: 0 0 12px rgba(255,122,0,0.5); z-index: 999; }
.headline-big { margin: 16px 0; font-size: 48px; line-height: 1.25; letter-spacing: 0.6px; color: #fff; }
.subhead { margin: 0 auto 24px; max-width: 900px; color: #cdd3df; }
.hero-actions { display: inline-flex; gap: 12px; }
.hero .primary, .hero .secondary { padding: 12px 18px; border-radius: 10px; border: 1px solid var(--border); font-weight: 600; }
.hero.dark .primary { background: var(--brand-accent); color: #0b0b0d; border-color: transparent; box-shadow: var(--glow); }
.hero.dark .secondary { background: transparent; color: #fff; border-color: rgba(255,255,255,0.2); }
.hero.dark .primary:hover { filter: brightness(0.97); transform: translateY(-1px); }
.hero.dark .secondary:hover { background: rgba(255,255,255,0.06); }

.energy-core { width: 240px; height: 240px; margin: 0 auto 12px; position: relative; }
.energy-core::before { content: ""; position: absolute; inset: 10px; border-radius: 50%; background: radial-gradient(closest-side, var(--energy), var(--energy-deep) 55%, rgba(0,0,0,0) 70%); filter: blur(4px); animation: pulse 3.2s infinite ease-in-out; box-shadow: 0 0 60px rgba(255,138,28,0.35); }
.energy-core::after { content: ""; position: absolute; inset: -16px; border-radius: 50%; background: repeating-conic-gradient(from 0deg, rgba(255,138,28,0.45) 0 12deg, rgba(255,138,28,0.0) 12deg 26deg); mask: radial-gradient(circle, rgba(0,0,0,1) 32%, rgba(0,0,0,0) 62%); filter: blur(0.5px); animation: spin 14s linear infinite; }
.energy-core span { position: absolute; inset: -30px; border-radius: 50%; border: 1px dashed rgba(255,138,28,0.25); animation: spin 20s linear infinite reverse; }
@keyframes pulse { 0%,100% { transform: scale(0.95); } 50% { transform: scale(1.06); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes drift { 0%,100% { transform: translateY(0); } 50% { transform: translateY(18px); } }

.section { padding: 32px 0; background: transparent; }
.section h3 { margin: 0 0 16px; font-size: 22px; color: #f5f7ff; letter-spacing: 0.3px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card { border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; padding: 16px; background: linear-gradient(180deg, rgba(17,19,27,0.9), rgba(10,11,16,0.9)); box-shadow: 0 10px 24px rgba(0,0,0,0.35); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.card { position: relative; }
.card::before { content: ""; position: absolute; inset: 0; border-radius: 12px; padding: 1px; background: linear-gradient(180deg, rgba(255,122,0,0.35), rgba(20,33,61,0.35)); -webkit-mask: linear-gradient(#000,#000) content-box, linear-gradient(#000,#000); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .2s ease; }
.card:hover::before { opacity: 1; }
.card h4 { margin: 0 0 8px; font-size: 18px; letter-spacing: 0.2px; }
.card h5 { margin: 0 0 8px; font-size: 16px; color: #f3f6ff; letter-spacing: 0.2px; }
.card p { margin: 0; color: #c9ceda; line-height: 1.7; font-size: 16px; }
.card { will-change: transform; }
.card:hover { transform: translateY(-3px) perspective(800px) rotateX(2deg) rotateY(-1deg); box-shadow: 0 12px 28px rgba(20,33,61,0.14), 0 0 18px rgba(255,122,0,0.12); border-color: rgba(255,122,0,0.25); }

.focus { background: transparent; }
.focus .cards .card { background: var(--panel); color: #e6e8ef; border-color: rgba(255,255,255,0.08); box-shadow: 0 10px 30px rgba(0,0,0,0.35); }
.focus .cards .card p { color: #cfd3dd; }
.card-illustration { width: 100%; height: auto; display: block; margin-bottom: 10px; object-fit: contain; border: none; box-shadow: none; background: transparent; }
.card-illustration.small { max-width: 30%; margin-left: auto; margin-right: auto; }
.card-icon { width: 80px; height: auto; display: block; margin-bottom: 10px; }
.card.center p { text-align: center; }

.layers { display: grid; gap: 20px; }
.layer { border: 1px solid rgba(255,255,255,0.08); border-radius: 16px; padding: 22px; background: linear-gradient(180deg, rgba(20,23,35,0.96), rgba(10,12,18,0.96)); box-shadow: 0 18px 40px rgba(0,0,0,0.45); position: relative; overflow: hidden; }
.layer::before { content: ""; position: absolute; inset: -30% -10%; background: radial-gradient(40% 40% at 10% 10%, rgba(255,138,28,0.12), transparent), radial-gradient(35% 35% at 90% 20%, rgba(20,33,61,0.45), transparent); opacity: 0.6; }
.layer.model-bg { background: linear-gradient(180deg, rgba(20,23,35,0.75), rgba(10,12,18,0.75)), url("assets/大模型整合能力.png") center / cover no-repeat; }
.layer.agent-bg { background: linear-gradient(180deg, rgba(20,23,35,0.75), rgba(10,12,18,0.75)), url("assets/企业AI构建.png") center / cover no-repeat; }
.layer-head { display: flex; align-items: flex-start; gap: 12px; position: relative; z-index: 1; }
.layer-head h4 { margin: 0; font-size: 22px; letter-spacing: 0.3px; color: #f6f8ff; flex: 1; min-width: 0; text-align: left; word-wrap: break-word; overflow-wrap: break-word; }
.layer-badge { display: inline-block; flex-shrink: 0; background: rgba(255,138,28,0.12); color: #ffd7b0; border: 1px solid rgba(255,138,28,0.35); border-radius: 999px; padding: 6px 12px; font-size: 13px; font-weight: 600; }
.layer-body { margin-top: 12px; }
.layer-body { position: relative; z-index: 1; opacity: 1; }
.layer-body.split { display: grid; grid-template-columns: 1.2fr 1fr; gap: 16px; align-items: center; }
.layer-media { border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; overflow: hidden; background: #0b0c12; box-shadow: 0 10px 24px rgba(0,0,0,0.35); }
.layer-media { border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; overflow: hidden; background: #0b0c12; box-shadow: 0 10px 24px rgba(0,0,0,0.35); aspect-ratio: 16 / 9; }
.layer-media img { width: 100%; height: 100%; display: block; object-fit: contain; }
.bullets { margin: 0; padding: 0 0 0 18px; color: #d4d9e6; font-size: 16px; }
.bullets li { margin: 8px 0; }
.emline { margin-top: 12px; font-weight: 600; font-size: 16px; color: #ffd7b0; letter-spacing: 0.2px; }
/* 智能营销 bullets 右侧装饰背景 */
.bullets.marketing-bg { position: relative; padding-right: 30%; }
.bullets.marketing-bg::after {
  content: "";
  position: absolute;
  right: 150px; top: 50%; transform: translateY(-50%);
  width: 900%;
  height: 100%;
  background: url("assets/智能营销.png") right center / contain no-repeat;
  opacity: 0.9;
  pointer-events: none;
}
/* 金融客服 bullets 右侧装饰背景 */
.bullets.service-bg { position: relative; padding-right: 30%; }
.bullets.service-bg::after {
  content: "";
  position: absolute;
  right: 150px; top: 50%; transform: translateY(-50%);
  width: 1000%;
  height: 100%;
  background: url("assets/金融客服.png") right center / contain no-repeat;
  opacity: 0.9;
  pointer-events: none;
}

#capabilities .card h5 { font-size: 17px; }
#bullets-marketing-service-reset
.bullets.marketing-bg, .bullets.service-bg { padding-right: 0 !important; }
.bullets.marketing-bg::after, .bullets.service-bg::after { display: none !important; }
#capabilities .card p { font-size: 15px; }
#capabilities .card .bullets { font-size: 15px; }
#capabilities .cards.two .card { border-radius: 20px; padding: 20px; background: linear-gradient(180deg, rgba(17,19,27,0.92), rgba(10,11,16,0.92)); border: 1px solid rgba(255,255,255,0.08); box-shadow: 0 16px 34px rgba(0,0,0,0.45); }
#capabilities .cards.two .card { border-radius: 24px; padding: 28px; }
#capabilities .cards.two .card h5 { font-size: 20px; font-weight: 800; color: #f5f7ff; letter-spacing: 0.3px; }
#capabilities .cards.two .bullets { list-style: none; padding: 0; margin: 14px 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 24px; }
#capabilities .cards.two .bullets li { position: relative; padding-left: 26px; margin: 0; color: #c9ceda; min-height: 26px; display: flex; align-items: center; }
#capabilities .cards.two .bullets li::before { content: "✓"; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; border-radius: 50%; background: rgba(255,122,0,0.18); color: #0b0c0f; border: 2px solid var(--brand-accent); display: grid; place-items: center; font-size: 12px; font-weight: 800; }
#capabilities .cards.two .card .emline { display: block; margin-top: 22px; padding: 14px 18px; border-radius: 24px; background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03)); border: 1px solid rgba(255,255,255,0.08); color: #ffd7b0; }

.statement { border: 1px solid rgba(255,255,255,0.08); border-radius: 26px; padding: 14px 18px; background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03)); box-shadow: 0 12px 26px rgba(0,0,0,0.38); }
.statement p { margin: 0; color: #ffd7b0; font-size: 16px; line-height: 1.8; font-weight: 600; }

.process .steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.process .steps li { display: grid; grid-template-columns: 90px 1fr; align-items: start; gap: 18px; padding: 18px; border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; background: linear-gradient(180deg, rgba(17,19,27,0.92), rgba(10,11,16,0.92)); box-shadow: 0 12px 26px rgba(0,0,0,0.38); }
.process .num { font-size: 44px; font-weight: 800; color: var(--brand-accent); letter-spacing: 1px; text-shadow: 0 0 18px rgba(255,122,0,0.3); }
.process .step-title { display: block; font-size: 19px; font-weight: 700; color: #f5f7ff; letter-spacing: 0.25px; margin-top: 2px; }
.process .step-desc { margin: 6px 0 0; color: #c9ceda; font-size: 16px; line-height: 1.8; }

.contact { position: relative; background: linear-gradient(180deg, rgba(17,19,27,0.94), rgba(10,11,16,0.94)); border-top: 1px solid rgba(255,255,255,0.06); border-bottom: 1px solid rgba(255,255,255,0.06); }
.contact::before { content: ""; position: absolute; inset: 0; background: radial-gradient(60% 80% at 70% 30%, rgba(255,122,0,0.12), transparent 60%), radial-gradient(40% 40% at 10% 60%, rgba(255,122,0,0.08), transparent 65%); pointer-events: none; }
.contact-inner { padding: 32px 0; display: grid; grid-template-columns: 1.2fr 1fr; gap: 18px; align-items: center; }
.contact-text h3 { margin: 0 0 8px; font-size: 22px; letter-spacing: 0.2px; color: #f6f8ff; }
.contact-text p { margin: 8px 0; display: flex; align-items: center; gap: 10px; color: #c9ceda; font-size: 16px; }
.contact-text p::before { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: rgba(255,122,0,0.12); border: 1px solid rgba(255,122,0,0.35); color: var(--brand-accent); font-weight: 700; }
.contact-text p:first-of-type::before { content: "☎"; }
.contact-text p:last-of-type::before { content: "✉"; }
.contact-card { position: relative; border: 1px solid rgba(255,122,0,0.35); border-radius: 8px; overflow: hidden; background: #0b0c12; box-shadow: var(--glow), 0 10px 24px rgba(0,0,0,0.35); width: 100px; height: 100px; }
.contact-card img { width: 100%; height: 100%; display: block; object-fit: contain; }

.site-footer { padding: 16px 0; text-align: center; color: #9aa3b2; background: transparent; border-top: 1px solid rgba(255,255,255,0.06); }

.parallax { position: absolute; inset: -20% -10%; background: radial-gradient(40% 40% at 10% 10%, rgba(255,138,28,0.1), transparent), radial-gradient(40% 40% at 90% 20%, rgba(20,33,61,0.6), transparent); opacity: 0.6; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal.is-visible .card { animation: foldIn .5s ease both; }
@keyframes foldIn { from { transform: scaleY(0.92) translateY(10px); opacity: 0.6; } to { transform: scaleY(1) translateY(0); opacity: 1; } }
.reveal.is-visible .stagger > * { animation: rise .5s ease both; }
@keyframes rise { from { transform: translateY(12px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.headline-big { background: linear-gradient(90deg, #ffffff, #ffd7b0 35%, #ff7a00 60%, #ffffff 85%); -webkit-background-clip: text; background-clip: text; color: transparent; background-size: 200% 200%; animation: headGlow 8s ease infinite; }
@keyframes headGlow { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
.section h3 { position: relative; }
.section h3::after { content: ""; position: absolute; left: 0; bottom: -8px; width: 48px; height: 2px; background: linear-gradient(90deg, #ff7a00, #ffb870); border-radius: 2px; animation: lineFlow 3s linear infinite; }
@keyframes lineFlow { 0% { transform: translateX(0); } 50% { transform: translateX(12px); } 100% { transform: translateX(0); } }
.card::before { animation: borderFlow 4s linear infinite; background-size: 200% 200%; }
@keyframes borderFlow { 0% { background-position: 0% 0%; } 100% { background-position: 100% 100%; } }
.magnet { position: relative; overflow: hidden; }
.magnet::after { content: ""; position: absolute; left: 50%; top: 50%; width: 0; height: 0; border-radius: 50%; background: rgba(255,122,0,0.25); transform: translate(-50%,-50%); }
.ripple { position: absolute; border-radius: 50%; transform: scale(0); animation: ripple .6s linear; background: rgba(255,122,0,0.35); pointer-events: none; }
@keyframes ripple { to { transform: scale(1); opacity: 0; } }

@media (max-width: 860px) {
  .side-deco { display: none; }
  .container { padding: 0 16px; }
  .cards { grid-template-columns: 1fr; }
  .cards.two { grid-template-columns: 1fr; }
  .card-illustration.small { max-width: 30%; }
  .card-icon { width: 64px; }
  .bullets.marketing-bg { padding-right: 0; }
  .bullets.marketing-bg::after { display: none; }
  .bullets.service-bg { padding-right: 0; }
  .bullets.service-bg::after { display: none; }
  .layer-body.split { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
  .contact-card { width: 100px; height: 100px; }
  .logo { width: 72px; }
  .headline-big { font-size: 30px; }
  .energy-core { width: 170px; height: 170px; }
  .section h3 { font-size: 20px; }
  .layer-head h4 { font-size: 20px; }
  /* 手机端头部：减拥挤，留呼吸感 */
  .header-inner { flex-wrap: nowrap; gap: 8px; padding: 8px 0; }
  .brand { flex: 1; min-width: 0; }
  .brand .name { font-size: 15px; line-height: 1.3; }
  .brand .tagline { display: none; }
  .cta-btn { padding: 6px 10px; font-size: 13px; flex-shrink: 0; }
  .nav-toggle { width: 38px; height: 38px; padding: 6px; }
  .nav-toggle span { width: 18px; }

.scroll-top { position: fixed; right: 18px; bottom: 22px; width: 44px; height: 44px; border-radius: 999px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12); display: grid; place-items: center; color: #fff; box-shadow: 0 10px 24px rgba(0,0,0,0.35); backdrop-filter: blur(6px); opacity: 0; transform: translateY(16px); transition: opacity .25s ease, transform .25s ease; z-index: 999; }
.scroll-top.show { opacity: 1; transform: translateY(0); }
.magnet { will-change: transform; transition: transform .12s ease; }
  .card h4 { font-size: 17px; }
  .bullets { font-size: 15px; }
  .process .step-title { font-size: 18px; }
  .process .step-desc { font-size: 15px; }
  /* 手机端：显示汉堡按钮，导航默认收起，点击后展开 */
  .nav-toggle { display: flex; flex-shrink: 0; margin-left: auto; margin-right: 4px; }
  .site-header { position: relative; }
  .header-inner { position: relative; flex-wrap: wrap; }
  .main-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0 -16px;
    padding: 0 16px;
    max-height: 0;
    overflow: hidden;
    background: rgba(10,11,16,0.98);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 12px 24px rgba(0,0,0,0.4);
    gap: 0;
    transition: max-height 0.3s ease, padding 0.3s ease;
    z-index: 20;
  }
  .main-nav a {
    padding: 14px 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    font-size: 16px;
  }
  .main-nav a:last-child { border-bottom: none; }
  body.nav-open .main-nav {
    max-height: 80vh;
    padding: 8px 16px 16px;
  }
}

.timeline-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 32px; }
.step-card { background: linear-gradient(180deg, rgba(17,19,27,0.92), rgba(10,11,16,0.92)); border: 1px solid rgba(255,255,255,0.08); padding: 18px; border-radius: 22px; position: relative; display: block; overflow: hidden; box-shadow: 0 12px 26px rgba(0,0,0,0.38); transition: transform .2s ease, box-shadow .2s ease; }
.step-card:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(0,0,0,0.42); }
.step-card::before { content: none; }
.step-num { display: inline-block; background: rgba(255,122,0,0.16); border: 1px solid rgba(255,122,0,0.35); color: #ffd7b0; font-weight: 800; font-size: 13px; padding: 6px 10px; border-radius: 999px; letter-spacing: 0.6px; margin-bottom: 8px; }
.step-illustration { border-radius: 18px; background: rgba(255,255,255,0.06); border: 1px dashed rgba(255,255,255,0.14); display: grid; place-items: center; height: 140px; margin-bottom: 14px; }
.step-illustration::after { display: none; }
.step-illustration img { width: 80px; height: 80px; object-fit: contain; transition: transform .25s ease, filter .25s ease; }
.step-card:hover .step-illustration img { transform: translateY(-2px) scale(1.06); filter: drop-shadow(0 0 12px rgba(255,122,0,0.28)); }
.reveal.is-visible .timeline-steps .step-illustration img { animation: timelineIconPop .6s ease both; }
.reveal.is-visible .timeline-steps .step-card:nth-child(1) .step-illustration img { animation-delay: .05s; }
.reveal.is-visible .timeline-steps .step-card:nth-child(2) .step-illustration img { animation-delay: .12s; }
.reveal.is-visible .timeline-steps .step-card:nth-child(3) .step-illustration img { animation-delay: .19s; }
.reveal.is-visible .timeline-steps .step-card:nth-child(4) .step-illustration img { animation-delay: .26s; }
@keyframes timelineIconPop { from { opacity: 0; transform: translateY(10px) scale(0.96); } to { opacity: 1; transform: translateY(0) scale(1); } }
.step-content { padding: 2px 4px; }
.step-card h4 { margin: 0 0 8px; color: #fff; font-size: 19px; letter-spacing: 0.3px; font-weight: 800; }
.timeline-steps .bullets { list-style: none; padding: 0; margin: 10px 0 0; }
.timeline-steps .bullets li { position: relative; padding-left: 24px; margin: 8px 0; color: #c9ceda; }
.timeline-steps .bullets li::before { content: "✓"; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; border-radius: 50%; background: rgba(255,122,0,0.18); color: #0b0c0f; border: 2px solid var(--brand-accent); display: grid; place-items: center; font-size: 11px; font-weight: 800; }

.engine-card { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 32px; }
.engine-icon { font-size: 40px; margin-bottom: 16px; background: rgba(255,255,255,0.05); width: 80px; height: 80px; display: flex; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid rgba(255,122,0,0.18); box-shadow: 0 0 18px rgba(255,122,0,0.08); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease, background .25s ease; }
.engine-icon img { width: 56px; height: 56px; display: block; object-fit: contain; transition: transform .25s ease, filter .25s ease; }
.engine-card:hover .engine-icon { transform: translateY(-4px); border-color: rgba(255,122,0,0.45); background: linear-gradient(180deg, rgba(255,122,0,0.16), rgba(255,255,255,0.04)); box-shadow: 0 0 28px rgba(255,122,0,0.18); }
.engine-card:hover .engine-icon img { transform: scale(1.06); filter: drop-shadow(0 0 10px rgba(255,122,0,0.28)); }
.reveal.is-visible .engine-icon { animation: enginePop .6s ease both; }
@keyframes enginePop { from { opacity: 0; transform: translateY(10px) scale(0.96); } to { opacity: 1; transform: translateY(0) scale(1); } }
.engine-card h4 { font-size: 20px; font-weight: 800; letter-spacing: 0.3px; color: #fff; margin: 0 0 10px; }
.engine-card .bullets { list-style: none; padding: 0; margin: 0; text-align: left; }
.engine-card .bullets li { position: relative; padding-left: 18px; margin: 10px 0; }
.engine-card .bullets li::before { content: ""; position: absolute; left: 0; top: 11px; width: 12px; height: 2px; background: linear-gradient(90deg, #ff7a00, #ffb870); border-radius: 2px; }

/* 图片风格的交付流程 */
.delivery-flow { display: flex; align-items: center; justify-content: space-between; position: relative; padding: 20px 10px; }
.flow-step { position: relative; z-index: 2; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 16px; }
.flow-icon { width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(135deg, rgba(255,122,0,0.1), rgba(255,122,0,0.05)); border: 2px solid rgba(255,122,0,0.3); color: var(--brand-accent); font-size: 24px; font-weight: 800; display: flex; align-items: center; justify-content: center; box-shadow: 0 0 20px rgba(255,122,0,0.15), inset 0 0 10px rgba(255,122,0,0.05); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.flow-step:hover .flow-icon { transform: translateY(-4px); box-shadow: 0 0 30px rgba(255,122,0,0.3), inset 0 0 15px rgba(255,122,0,0.1); border-color: rgba(255,122,0,0.6); color: #fff; background: var(--brand-accent); }
.flow-label { font-size: 16px; font-weight: 700; color: #e6e8ef; letter-spacing: 0.5px; transition: color 0.3s ease; }
.flow-step:hover .flow-label { color: var(--brand-accent); }
.flow-arrow { flex: 1; height: 2px; background: linear-gradient(90deg, rgba(255,122,0,0.2), rgba(255,122,0,0.6), rgba(255,122,0,0.2)); margin: 0 10px; position: relative; top: -18px; opacity: 0.6; }
.flow-arrow::after { content: ""; position: absolute; right: 0; top: 50%; width: 8px; height: 8px; border-top: 2px solid rgba(255,122,0,0.8); border-right: 2px solid rgba(255,122,0,0.8); transform: translateY(-50%) rotate(45deg); }

/* 修复媒体查询覆盖问题 */
@media (max-width: 860px) {
  .delivery-flow { flex-direction: column; align-items: flex-start; gap: 0; padding: 10px; }
  .flow-step { flex-direction: row; gap: 16px; text-align: left; width: 100%; align-items: center; }
  .flow-icon { width: 50px; height: 50px; font-size: 20px; flex-shrink: 0; }
  .flow-label { font-size: 15px; }
  .flow-arrow { width: 2px; height: 30px; margin: 0 0 0 24px; top: 0; background: linear-gradient(180deg, rgba(255,122,0,0.2), rgba(255,122,0,0.6), rgba(255,122,0,0.2)); flex: none; position: relative; }
  .flow-arrow::after { top: auto; bottom: 0; right: 50%; width: 6px; height: 6px; transform: translateX(50%) rotate(135deg); border-color: rgba(255,122,0,0.8); }
}
.illu-card { border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; background: rgba(255,255,255,0.03); padding: 16px; text-align: center; }
.illu-svg { width: 100%; height: auto; display: block; margin-bottom: 8px; }
.illu-card p { margin: 0; color: #c9ceda; font-size: 14px; }

@media (max-width: 860px) {
  .illustrations { grid-template-columns: 1fr; }
}

/* 价值总结板块四列布局 */
.value-summary .cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.value-card { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 24px 16px; background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01)); border: 1px solid rgba(255,255,255,0.08); border-radius: 16px; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.value-card:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,0,0,0.3); border-color: rgba(255,122,0,0.3); background: linear-gradient(180deg, rgba(255,122,0,0.08), rgba(255,122,0,0.02)); }
.value-icon { width: 56px; height: 56px; margin-bottom: 16px; object-fit: contain; transition: transform .25s ease, filter .25s ease; }
.value-card:hover .value-icon { transform: translateY(-2px) scale(1.06); filter: drop-shadow(0 0 12px rgba(255,122,0,0.28)); }
.value-title { font-size: 16px; font-weight: 700; color: #f5f7ff; line-height: 1.4; }
.reveal.is-visible.value-summary .value-icon { animation: valueIconPop .6s ease both; }
.reveal.is-visible.value-summary .value-card:nth-child(1) .value-icon { animation-delay: .05s; }
.reveal.is-visible.value-summary .value-card:nth-child(2) .value-icon { animation-delay: .12s; }
.reveal.is-visible.value-summary .value-card:nth-child(3) .value-icon { animation-delay: .19s; }
.reveal.is-visible.value-summary .value-card:nth-child(4) .value-icon { animation-delay: .26s; }
@keyframes valueIconPop { from { opacity: 0; transform: translateY(10px) scale(0.96); } to { opacity: 1; transform: translateY(0) scale(1); } }

@media (max-width: 860px) {
  .value-summary .cards { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .value-card { padding: 20px 12px; }
  .value-icon { width: 48px; height: 48px; }
  .value-title { font-size: 15px; }
}