/* ============ Apogee design system · 吉祥集团 ============ */
:root {
  --bg: #080A19;
  --bg-alt: #0B0E1F;
  --btn-light: #E9E9E9;
  --btn-ink: #0A0707;
  --glass-pill: rgba(10, 7, 7, 0.35);
  --glass-auth: rgba(0, 0, 0, 0.35);
  --glass-card: rgba(17, 16, 15, 0.35);
  --glass-panel: rgba(17, 16, 15, 0.6);
  --line: rgba(255, 255, 255, 0.06);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-menu: cubic-bezier(0.32, 0.72, 0, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Suisse Intl', -apple-system, BlinkMacSystemFont, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: #fff;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-weight: 450;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ol, ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: #fff; color: var(--btn-ink); }
::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.14); border-radius: 5px; }

/* ---------- 动画体系（pure CSS keyframes + forwards） ---------- */
@keyframes fade-up { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fade-down { from { opacity: 0; transform: translateY(-16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fade-left { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fade-right { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fade-scale { from { opacity: 0; transform: scale(0.92); } to { opacity: 1; transform: scale(1); } }
@keyframes bar-grow { from { transform: scaleY(0); opacity: 0; } to { transform: scaleY(1); opacity: 1; } }

.animate-fade-up { animation: fade-up 0.8s var(--ease) forwards; }
.animate-fade-down { animation: fade-down 0.7s var(--ease) forwards; }
.animate-fade-left { animation: fade-left 0.8s var(--ease) forwards; }
.animate-fade-right { animation: fade-right 0.8s var(--ease) forwards; }
.animate-fade-scale { animation: fade-scale 0.9s var(--ease) forwards; }
.animate-bar-grow { animation: bar-grow 0.6s var(--ease) forwards; opacity: 0; }

.an { opacity: 0; }
.an.d0 { animation: fade-up 0.8s var(--ease) 0ms forwards; }
.an.d100 { animation: fade-up 0.8s var(--ease) 100ms forwards; }
.an.d200 { animation: fade-up 0.8s var(--ease) 200ms forwards; }
.an.d300 { animation: fade-up 0.8s var(--ease) 300ms forwards; }
.an.d500 { animation: fade-up 0.8s var(--ease) 500ms forwards; }
.an.d700 { animation: fade-up 0.8s var(--ease) 700ms forwards; }
.an.d900 { animation: fade-up 0.8s var(--ease) 900ms forwards; }
.an.scale.d900 { animation-name: fade-scale; animation-duration: 0.9s; }
.nav-an { opacity: 0; }
.nav-an.d0 { animation: fade-down 0.7s var(--ease) forwards; }
.nav-an.d100 { animation: fade-down 0.7s var(--ease) 100ms forwards; }
.nav-an.d200 { animation: fade-down 0.7s var(--ease) 200ms forwards; }

/* 滚动显形（同一 keyframe 语言） */
.rv { opacity: 0; }
.rv.in { animation: fade-up 0.8s var(--ease) forwards; }
.rv.in.d1 { animation-delay: 0.08s; } .rv.in.d2 { animation-delay: 0.14s; }
.rv.in.d3 { animation-delay: 0.2s; } .rv.in.d4 { animation-delay: 0.26s; }
.rv.in.d5 { animation-delay: 0.32s; } .rv.in.d6 { animation-delay: 0.38s; }
.rv.in.d7 { animation-delay: 0.44s; } .rv.in.d8 { animation-delay: 0.5s; }

/* ---------- HERO ---------- */
.hero { position: relative; width: 100%; height: 100vh; height: 100svh; overflow: hidden; background: var(--bg); }
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-wrap { position: relative; z-index: 10; height: 100%; display: flex; flex-direction: column; }

.nav { width: 100%; max-width: 1800px; margin: 0 auto; padding: 20px 20px 0; display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 50; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-svg { width: 28px; height: 28px; }
.logo-word { font-size: 22px; font-weight: 450; line-height: 1; letter-spacing: -0.02em; }
.nav-pill-wrap { flex: 1; display: flex; justify-content: center; }
.nav-pill { height: 52px; padding: 0 24px; display: none; align-items: center; gap: 30px; background: var(--glass-pill); border-radius: 11px; backdrop-filter: blur(17px); -webkit-backdrop-filter: blur(17px); }
.nav-item { font-size: 14px; font-weight: 450; line-height: 14px; color: rgba(255, 255, 255, 0.8); transition: color 0.2s; white-space: nowrap; }
.nav-item:hover, .nav-item.is-active { color: #fff; }
.auth-pill { height: 52px; padding: 3px; background: var(--glass-auth); border-radius: 13px; backdrop-filter: blur(17px); -webkit-backdrop-filter: blur(17px); display: none; align-items: center; gap: 5px; }
.auth-login { height: 46px; padding: 0 24px; border-radius: 11px; display: inline-flex; align-items: center; font-size: 14px; font-weight: 450; line-height: 14px; color: #fff; transition: background 0.2s; white-space: nowrap; }
.auth-login:hover { background: rgba(255, 255, 255, 0.05); }
.auth-demo { height: 46px; padding: 0 24px; border-radius: 11px; display: inline-flex; align-items: center; background: var(--btn-light); color: var(--btn-ink); font-size: 14px; font-weight: 450; line-height: 14px; transition: background 0.2s; white-space: nowrap; }
.auth-demo:hover { background: #fff; }
.burger { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; border-radius: 11px; background: var(--glass-pill); backdrop-filter: blur(17px); -webkit-backdrop-filter: blur(17px); transition: background 0.2s; }
.burger:hover { background: rgba(255, 255, 255, 0.1); }
.burger-icons { position: relative; width: 20px; height: 20px; }
.ic { position: absolute; inset: 0; transition: all 0.3s ease-out; }
.ic-menu { opacity: 1; transform: rotate(0) scale(1); }
.ic-x { opacity: 0; transform: rotate(-90deg) scale(0.75); }
.nav-burger-open .ic-menu { opacity: 0; transform: rotate(90deg) scale(0.75); }
.nav-burger-open .ic-x { opacity: 1; transform: rotate(0) scale(1); }

/* 移动端菜单 */
.m-menu { display: none; }
.m-menu.is-open { display: block; }
.m-menu { position: fixed; inset: 0; z-index: 40; visibility: hidden; transition: visibility 0s 0.5s; }
.m-menu.is-open { visibility: visible; transition: visibility 0s; display: block; }
.m-backdrop { position: absolute; inset: 0; background: rgba(8, 10, 25, 0.9); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); opacity: 0; transition: opacity 0.5s; }
.m-menu.is-open .m-backdrop { opacity: 1; }
.m-panel {
  position: absolute; top: 76px; left: 16px; right: 16px;
  background: var(--glass-panel); backdrop-filter: blur(30px); -webkit-backdrop-filter: blur(30px);
  border-radius: 20px; border: 1px solid var(--line); padding: 24px;
  transform-origin: top; opacity: 0; transform: translateY(-16px) scale(0.97);
  transition: all 0.5s var(--ease-menu);
}
.m-menu.is-open .m-panel { opacity: 1; transform: translateY(0) scale(1); }
.m-links { display: flex; flex-direction: column; gap: 4px; }
.m-link { display: flex; align-items: center; justify-content: space-between; padding: 16px; border-radius: 12px; color: rgba(255, 255, 255, 0.9); font-size: 18px; font-weight: 450; opacity: 0; transform: translateX(-12px); transition: all 0.3s; }
.m-menu.is-open .m-link { opacity: 1; transform: translateX(0); }
.m-menu.is-open .m-link:nth-child(1) { transition-delay: 100ms; }
.m-menu.is-open .m-link:nth-child(2) { transition-delay: 150ms; }
.m-menu.is-open .m-link:nth-child(3) { transition-delay: 200ms; }
.m-menu.is-open .m-link:nth-child(4) { transition-delay: 250ms; }
.m-link:hover { background: rgba(255, 255, 255, 0.06); }
.m-divider { height: 1px; background: rgba(255, 255, 255, 0.1); margin: 20px 0; }
.m-ctas { display: flex; flex-direction: column; gap: 12px; opacity: 0; transform: translateY(8px); transition: all 0.3s 0s; }
.m-menu.is-open .m-ctas { opacity: 1; transform: none; transition-delay: 350ms; }
.m-btn-light, .m-btn-ghost { width: 100%; height: 50px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 450; transition: background 0.2s; }
.m-btn-light { background: var(--btn-light); color: var(--btn-ink); }
.m-btn-light:hover { background: #fff; }
.m-btn-ghost { border: 1px solid rgba(255, 255, 255, 0.3); color: #fff; }
.m-btn-ghost:hover { background: rgba(255, 255, 255, 0.05); }

/* 首屏内容 */
.hero-row { flex: 1; display: flex; align-items: center; padding: 32px 0; }
.hero-col { width: 100%; max-width: 1800px; margin: 0 auto; padding: 0 20px; display: flex; flex-direction: column; gap: 40px; }
.hero-text { max-width: 593px; }
.h1 { color: #fff; font-size: 36px; font-weight: 450; line-height: 1.02; letter-spacing: 0.01em; margin-bottom: 20px; }
.sub { color: rgba(255, 255, 255, 0.8); font-size: 16px; font-weight: 450; line-height: 1.3; max-width: 370px; margin-bottom: 28px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn-light, .btn-ghost {
  height: 46px; padding: 0 20px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 450; line-height: 15.5px; transition: opacity 0.2s, background 0.2s;
}
.btn-light { background: var(--btn-light); color: var(--btn-ink); }
.btn-light:hover { opacity: 0.9; }
.btn-ghost { border: 1px solid #fff; color: #fff; }
.btn-ghost:hover { opacity: 0.8; }
.btn-light.small { height: 42px; padding: 0 20px; font-size: 13.5px; }
.btn-light.wfull { width: 100%; height: 51px; }

/* 收入玻璃卡 */
.card-wrap { width: 100%; max-width: 405px; margin: 0 auto; }
.rev-card { width: 100%; border-radius: 24px; background: var(--glass-card); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 20px 20px 20px; border: 1px solid var(--line); }
.rev-label { color: #fff; font-size: 16px; font-weight: 450; line-height: 20px; margin-bottom: 12px; }
.rev-amount { margin-bottom: 8px; white-space: nowrap; }
.rev-a { color: #fff; font-size: 28px; font-weight: 450; line-height: 1; }
.rev-b { color: rgba(255, 255, 255, 0.2); font-size: 28px; font-weight: 450; line-height: 1; }
.rev-delta { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.delta-badge { padding: 7px 6px; background: rgba(255, 255, 255, 0.2); border-radius: 6px; color: #fff; font-size: 12px; font-weight: 450; line-height: 14px; white-space: nowrap; }
.delta-cap { color: rgba(255, 255, 255, 0.8); font-size: 12px; font-weight: 450; line-height: 14px; opacity: 0.7; }
.chart { position: relative; }
.bars { display: flex; align-items: flex-end; gap: 1.5px; height: 80px; }
.bars i { flex: 1; border-radius: 0.5px; transform-origin: bottom; }
.gridlines { position: absolute; inset: 0; height: 80px; pointer-events: none; }
.gridlines i { position: absolute; top: 0; bottom: 0; width: 1px; background: rgba(255, 255, 255, 0.1); }
.axis { display: flex; justify-content: space-between; margin-top: 12px; }
.axis span { font-size: 9px; font-weight: 450; line-height: 10px; color: rgba(255, 255, 255, 0.8); }
.axis span.dim { opacity: 0.4; }

.scroll-hint { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); color: rgba(255, 255, 255, 0.55); display: flex; animation: bob 2.2s var(--ease) infinite; }
@keyframes bob { 0%, 100% { transform: translate(-50%, 0); opacity: 0.55; } 50% { transform: translate(-50%, 7px); opacity: 1; } }

/* ---------- 区块通用 ---------- */
.sec { position: relative; padding: clamp(96px, 14vh, 160px) 0; background: var(--bg); }
.sec-alt { background: var(--bg-alt); }
.wrap { width: min(1240px, calc(100% - 40px)); margin: 0 auto; position: relative; z-index: 2; }
.kicker { font-size: 13px; letter-spacing: 0.34em; color: rgba(255, 255, 255, 0.45); margin-bottom: 14px; text-transform: uppercase; }
.h2 { font-size: clamp(32px, 4.6vw, 52px); font-weight: 450; line-height: 1.1; letter-spacing: 0.01em; margin-bottom: 44px; }
.h2-dot { color: rgba(255, 255, 255, 0.25); }
.p { color: rgba(255, 255, 255, 0.7); line-height: 1.95; font-size: 15.5px; margin-bottom: 18px; }

/* 关于 */
.about-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(36px, 5vw, 80px); align-items: start; }
.photo { border-radius: 20px; overflow: hidden; border: 1px solid var(--line); margin-top: 14px; }
.photo img { width: 100%; height: 250px; object-fit: cover; }
.tl { display: flex; flex-direction: column; gap: 10px; }
.tl-item { background: var(--glass-card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); transition: transform 0.35s var(--ease), border-color 0.3s; }
.tl-item:hover { transform: translateX(8px); border-color: rgba(255, 255, 255, 0.25); }
.tl-item time { font-size: 15px; font-weight: 450; color: rgba(255, 255, 255, 0.55); letter-spacing: 0.06em; }
.tl-item p { margin-top: 4px; font-size: 14.5px; line-height: 1.7; color: rgba(255, 255, 255, 0.85); }

/* 业务 */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.svc {
  position: relative; background: var(--glass-card); border: 1px solid var(--line);
  border-radius: 20px; padding: 30px 26px 26px; cursor: pointer;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  transition: transform 0.45s var(--ease), border-color 0.35s, box-shadow 0.45s;
}
.svc:hover { transform: translateY(-8px); border-color: rgba(255, 255, 255, 0.28); box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45); }
.svc-ic { width: 54px; height: 54px; border-radius: 12px; background: rgba(255, 255, 255, 0.06); display: grid; place-items: center; margin-bottom: 18px; transition: background 0.35s, transform 0.45s var(--ease); }
.svc-ic svg { width: 30px; height: 30px; color: #fff; }
.svc:hover .svc-ic { background: rgba(255, 255, 255, 0.12); transform: scale(1.08); }
.svc h3 { font-size: 18px; font-weight: 450; margin-bottom: 9px; }
.svc p { font-size: 14px; line-height: 1.85; color: rgba(255, 255, 255, 0.6); min-height: 50px; }
.svc-more { display: inline-block; margin-top: 14px; font-size: 13px; color: rgba(255, 255, 255, 0.85); opacity: 0; transform: translateY(8px); transition: all 0.4s var(--ease); }
.svc:hover .svc-more { opacity: 1; transform: none; }

/* 弹窗 */
.modal { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(8, 10, 25, 0.9); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); opacity: 0; transition: opacity 0.4s; }
.modal.is-open .modal-backdrop { opacity: 1; }
.modal-panel {
  position: relative; width: min(720px, 94vw); max-height: 88vh; overflow: auto;
  background: var(--glass-panel); border: 1px solid var(--line); border-radius: 24px;
  backdrop-filter: blur(30px); -webkit-backdrop-filter: blur(30px);
  opacity: 0; transform: scale(0.92);
  transition: transform 0.5s var(--ease), opacity 0.35s ease;
}
.modal.is-open .modal-panel { opacity: 1; transform: scale(1); }
.modal-media { height: 220px; overflow: hidden; border-radius: 24px 24px 0 0; position: relative; }
.modal-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(17, 16, 15, 0.9)); }
.modal-media img { width: 100%; height: 100%; object-fit: cover; }
.modal-x { position: absolute; top: 14px; right: 14px; z-index: 3; width: 42px; height: 42px; border-radius: 11px; background: var(--glass-auth); backdrop-filter: blur(17px); -webkit-backdrop-filter: blur(17px); color: #fff; display: grid; place-items: center; transition: background 0.3s, transform 0.3s; }
.modal-x:hover { background: rgba(255, 255, 255, 0.15); transform: rotate(90deg); }
.modal-body { padding: 26px 32px 32px; }
.modal-body h3 { font-size: 24px; font-weight: 450; margin-bottom: 12px; }
.modal-body > p { color: rgba(255, 255, 255, 0.7); line-height: 1.95; font-size: 14.5px; }
.modal-body h4 { margin: 22px 0 14px; font-size: 12px; letter-spacing: 0.3em; color: rgba(255, 255, 255, 0.45); text-transform: uppercase; }
.modal-flow { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; counter-reset: step; }
.modal-flow li { counter-increment: step; background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line); border-radius: 12px; padding: 32px 16px 14px; font-size: 13.5px; color: rgba(255, 255, 255, 0.8); line-height: 1.7; position: relative; transition: border-color 0.3s, transform 0.3s var(--ease); }
.modal-flow li:hover { border-color: rgba(255, 255, 255, 0.25); transform: translateY(-3px); }
.modal-flow li::before { content: "0" counter(step); position: absolute; top: 9px; left: 16px; font-size: 13px; color: rgba(255, 255, 255, 0.45); }
.modal-foot { margin-top: 28px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.modal-tag { font-size: 12px; color: rgba(255, 255, 255, 0.4); letter-spacing: 0.1em; }

/* 案例 */
.car { position: relative; }
.car-track { display: flex; gap: 22px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 6px calc(max(20px, (100vw - 1240px) / 2)) 26px; scrollbar-width: none; cursor: grab; }
.car-track::-webkit-scrollbar { display: none; }
.car-track.dragging { cursor: grabbing; scroll-snap-type: none; scroll-behavior: auto; }
.case { position: relative; flex: 0 0 min(620px, 82vw); scroll-snap-align: center; border-radius: 20px; overflow: hidden; border: 1px solid var(--line); background: var(--glass-card); transition: border-color 0.4s, transform 0.5s var(--ease); }
.case:hover { border-color: rgba(255, 255, 255, 0.25); }
.case img { width: 100%; height: 380px; object-fit: cover; transition: transform 1.2s var(--ease), filter 1.2s; filter: saturate(0.85) brightness(0.85); }
.case:hover img { transform: scale(1.06); filter: saturate(1) brightness(1); }
.case figcaption { position: absolute; inset: auto 0 0 0; padding: 80px 24px 22px; background: linear-gradient(180deg, transparent, rgba(8, 10, 25, 0.94)); }
.case-idx { position: absolute; top: -104px; right: 22px; font-size: 72px; font-weight: 450; color: rgba(255, 255, 255, 0.14); line-height: 1; pointer-events: none; }
.case figcaption strong { display: block; font-size: 18px; font-weight: 450; }
.case figcaption em { display: block; margin-top: 6px; font-style: normal; font-size: 13px; color: rgba(255, 255, 255, 0.6); }
.car-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 52px; height: 52px; border-radius: 13px; background: var(--glass-pill);
  border: 1px solid var(--line); backdrop-filter: blur(17px); -webkit-backdrop-filter: blur(17px);
  display: none; place-items: center; color: #fff; transition: background 0.3s;
}
.car-arrow:hover { background: rgba(255, 255, 255, 0.14); }
.car-arrow.prev { left: max(12px, calc(50% - 660px)); }
.car-arrow.next { right: max(12px, calc(50% - 660px)); }

/* 优势 */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.adv { background: var(--glass-card); border: 1px solid var(--line); border-radius: 20px; padding: 32px 24px; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); transition: transform 0.45s var(--ease), border-color 0.35s; }
.adv:hover { transform: translateY(-8px); border-color: rgba(255, 255, 255, 0.28); }
.adv-ic { width: 48px; height: 48px; border-radius: 12px; background: rgba(255, 255, 255, 0.06); display: grid; place-items: center; margin-bottom: 22px; }
.adv-ic svg { width: 26px; height: 26px; color: #fff; }
.adv-num { font-size: 46px; font-weight: 450; line-height: 1; white-space: nowrap; }
.adv-num em { font-style: normal; font-size: 16px; color: rgba(255, 255, 255, 0.2); margin-left: 3px; }
.adv-cap { margin-top: 10px; font-size: 13.5px; line-height: 1.7; color: rgba(255, 255, 255, 0.6); }

/* 联系 */
.ct-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(36px, 5vw, 80px); align-items: start; }
.ct-info li { padding: 20px 0; border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.ct-info li strong { width: 100%; font-size: 11.5px; font-weight: 450; letter-spacing: 0.3em; color: rgba(255, 255, 255, 0.4); text-transform: uppercase; }
.ct-info li a, .ct-info li p { font-size: 19px; font-weight: 450; transition: opacity 0.2s; }
.ct-info li a:hover { opacity: 0.75; }
.ct-badge { font-size: 11.5px; padding: 5px 10px; border-radius: 6px; background: rgba(255, 255, 255, 0.12); color: rgba(255, 255, 255, 0.8); }
.form { background: var(--glass-card); border: 1px solid var(--line); border-radius: 24px; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 28px; }
.form h3 { font-size: 19px; font-weight: 450; margin-bottom: 22px; }
.fd { position: relative; margin-bottom: 18px; }
.fd input, .fd textarea, .fd select {
  width: 100%; padding: 17px 16px 9px; font-size: 15px; font-weight: 450; color: #fff; font-family: inherit;
  background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 12px;
  outline: none; transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease);
}
.fd textarea { resize: vertical; min-height: 86px; }
.fd select { appearance: none; }
.fd select option { color: #fff; background: var(--bg-alt); }
.fd label { position: absolute; left: 17px; top: 50%; transform: translateY(-50%); font-size: 15px; color: rgba(255, 255, 255, 0.4); pointer-events: none; transition: all 0.3s var(--ease); }
.fd:has(textarea) label { top: 20px; transform: none; }
.fd:has(select) label { top: 12px; transform: none; font-size: 11px; letter-spacing: 0.1em; color: rgba(255, 255, 255, 0.35); }
.fd input:focus, .fd textarea:focus, .fd select:focus { border-color: rgba(255, 255, 255, 0.45); background: rgba(255, 255, 255, 0.06); transform: scale(1.012); }
.fd input:focus + label, .fd textarea:focus + label,
.fd input:not(:placeholder-shown) + label, .fd textarea:not(:placeholder-shown) + label {
  top: 12px; transform: none; font-size: 11px; letter-spacing: 0.1em; color: rgba(255, 255, 255, 0.45);
}
.form-note { margin-top: 12px; font-size: 13px; min-height: 20px; color: rgba(255, 255, 255, 0.6); line-height: 1.6; }
.form-note.err { color: #ff9d9d; }
.fd.err input, .fd.err textarea, .fd.err select { border-color: rgba(255, 122, 122, 0.6); background: rgba(255, 80, 80, 0.06); }
.form.shake { animation: shake 0.45s ease; }
@keyframes shake { 0%, 100% { transform: translateX(0); } 20% { transform: translateX(-9px); } 40% { transform: translateX(8px); } 60% { transform: translateX(-6px); } 80% { transform: translateX(4px); } }
.btn-submit-ok { background: #43c98d !important; color: #041410 !important; }

/* 页脚 */
.footer { border-top: 1px solid var(--line); padding: 44px 0; background: var(--bg); }
.footer-in { width: min(1240px, calc(100% - 40px)); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.f-logo { font-size: 16px; font-weight: 450; letter-spacing: 0.04em; }
.f-slogan { margin-top: 5px; font-size: 11.5px; letter-spacing: 0.34em; color: rgba(255, 255, 255, 0.4); }
.f-copy { font-size: 12px; color: rgba(255, 255, 255, 0.3); }

/* ---------- 断点（sm640 / md768 / lg1024） ---------- */
@media (min-width: 640px) {
  .nav { padding: 30px 32px 0; }
  .logo-svg { width: 32px; height: 32px; }
  .logo-word { font-size: 26px; }
  .h1 { font-size: 52px; margin-bottom: 32px; }
  .sub { font-size: 18px; margin-bottom: 40px; }
  .cta-row { gap: 16px; }
  .btn-light, .btn-ghost { height: 51px; padding: 0 27px; font-size: 15.5px; }
  .rev-card { border-radius: 33px; padding: 32px 32px 24px; }
  .rev-label { font-size: 20px; line-height: 20px; margin-bottom: 16px; }
  .rev-a, .rev-b { font-size: 46px; }
  .rev-amount { margin-bottom: 12px; }
  .rev-delta { margin-bottom: 32px; }
  .delta-badge, .delta-cap { font-size: 14px; line-height: 14px; }
  .bars { height: 100px; }
  .gridlines { height: 100px; }
  .axis span { font-size: 10px; line-height: 10px; }
  .m-panel { top: 86px; left: 24px; right: 24px; padding: 32px; }
  .wrap { width: calc(100% - 64px); }
  .car-track { padding-left: max(32px, calc((100vw - 1240px) / 2)); padding-right: max(32px, calc((100vw - 1240px) / 2)); }
}
@media (min-width: 768px) {
  .nav { padding: 30px 82px 0; }
  .hero-col { padding: 0 32px; }
}
@media (min-width: 1024px) {
  .hero-col { flex-direction: row; align-items: center; justify-content: space-between; gap: 48px; padding: 0 82px; }
  .h1 { font-size: 64px; }
  .sub { font-size: 20px; }
  .nav-pill, .auth-pill { display: flex; }
  .burger-wrap { display: none; }
  .m-menu { display: none !important; }
  .card-wrap { margin: 0; flex: 0 0 405px; }
  .car-arrow { display: grid; }
}
@media (min-width: 1280px) {
  .h1 { font-size: 72px; }
}
@media (max-width: 1023px) {
  .about-grid, .ct-grid { grid-template-columns: 1fr; }
  .svc-grid { grid-template-columns: 1fr 1fr; }
  .adv-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 719px) {
  .svc-grid { grid-template-columns: 1fr; }
  .case img { height: 280px; }
  .footer-in { flex-direction: column; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001s !important; transition-duration: 0.001s !important; animation-delay: 0s !important; }
  html { scroll-behavior: auto; }
  .an, .nav-an, .rv { opacity: 1 !important; }
}