:root {
  --bg0: #060b18;
  --bg1: #0a1020;
  --txt: #e6edf7;
  --muted: #9fb0c9;
  --line: #25324d;
  --accent: #2563eb;
  --accent2: #06b6d4;
  --warm: #f97316;
  --warm2: #fb923c;
  --ok: #10b981;
  --radius: 20px;
  --max: 1160px;
}
* { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  color-scheme: dark;
}
html, body { height: 100%; }
body {
  margin: 0;
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--txt);
  /* 仅纯色底：纵向渐变放到 fixed 层，避免随页面滚动与固定网格错位产生“断层/遮罩”感 */
  background-color: var(--bg0);
  overflow-x: hidden;
  overscroll-behavior-y: contain;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  /* 底层：整屏纵向氛围色；再上：光晕 + 网格，全部与视口锁定，滚动时不会与内容错位 */
  background-image:
    linear-gradient(rgba(255,255,255,.042) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.042) 1px, transparent 1px),
    radial-gradient(520px 520px at 15% 10%, rgba(249,115,22,.42), transparent 62%),
    radial-gradient(540px 540px at 90% 28%, rgba(37,99,235,.40), transparent 64%),
    radial-gradient(420px 420px at 50% 72%, rgba(6,182,212,.22), transparent 62%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  background-size: 42px 42px, 42px 42px, auto, auto, auto, 100% 100%;
  background-position: 0 0, 0 0, center, center, center, center;
  background-repeat: repeat, repeat, no-repeat, no-repeat, no-repeat, no-repeat;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .035;
  background-image: radial-gradient(rgba(255,255,255,.6) .6px, transparent .6px);
  background-size: 3px 3px;
}
a { color: inherit; text-decoration: none; }
a, button, .btn, .preview-tab {
  -webkit-tap-highlight-color: transparent;
}
.btn, .preview-tab {
  touch-action: manipulation;
}
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.section { padding: 72px 0; position: relative; }
.section-header { margin-bottom: 24px; }
.section-label {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.13);
  background: rgba(255,255,255,.04);
  color: #c7d5eb;
  font-size: 12px;
  letter-spacing: .08em;
}
.section-title { margin: 14px 0 10px; font-size: 42px; line-height: 1.1; letter-spacing: -.02em; }
.section-desc { margin: 0; color: var(--muted); line-height: 1.8; max-width: 720px; }

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 90;
  padding-top: env(safe-area-inset-top, 0px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: linear-gradient(180deg, rgba(6,11,24,.78), rgba(6,11,24,.35));
  backdrop-filter: blur(12px);
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  will-change: transform;
}
.topbar-scrolled {
  background: rgba(6,11,24,.72);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: rgba(255,255,255,.16);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  transition: padding .28s ease, gap .28s ease;
}
/* 移动端向下滚动时轻收缩（类名由 app.js 根据方向添加） */
@media (max-width: 900px) {
  .topbar .logo-wrap,
  .topbar .logo-img,
  .topbar .brand-title b {
    transition: width .28s ease, height .28s ease, font-size .28s ease;
  }
  .topbar.topbar-compact .topbar-inner {
    padding: 6px 0;
    gap: 10px;
  }
  .topbar.topbar-compact .logo-wrap {
    width: 28px;
    height: 28px;
  }
  .topbar.topbar-compact .logo-img {
    width: 20px;
    height: 20px;
  }
  .topbar.topbar-compact .brand-title b {
    font-size: 13px;
  }
  .topbar.topbar-compact .topbar-actions .btn {
    height: 32px;
    padding: 0 11px;
    font-size: 12px;
    border-radius: 10px;
  }
  .topbar.topbar-compact .topbar-actions .btn svg {
    width: 13px;
    height: 13px;
  }
}
.brand { display: inline-flex; align-items: center; gap: 10px; }
.logo-wrap {
  width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.05);
  box-shadow: 0 0 12px rgba(249,115,22,.5);
}
.logo-wrap-sm { width: 30px; height: 30px; }
.logo-img { width: 24px; height: 24px; border-radius: 7px; display: block; }
.brand-title { display: flex; flex-direction: column; line-height: 1.12; }
.brand-title b { font-size: 14px; letter-spacing: .06em; }
.brand-title span { font-size: 12px; color: var(--muted); }

.nav { display: flex; gap: 20px; align-items: center; }
.nav a {
  font-size: 13px; color: #b4c2d8; position: relative; padding: 6px 0;
}
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px;
  transform: scaleX(0); transform-origin: left;
  background: linear-gradient(90deg, var(--warm), var(--accent2));
  transition: transform .25s ease;
}
.nav a:hover { color: #fff; }
.nav a:hover::after { transform: scaleX(1); }

.topbar-actions { display: flex; align-items: center; gap: 10px; }

/* Buttons */
.btn {
  height: 38px; padding: 0 14px; border-radius: 11px; border: 1px solid rgba(255,255,255,.16);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
  position: relative;
  overflow: hidden;
}
.btn:hover { transform: translateY(-2px); }
.btn-lg { height: 44px; padding: 0 18px; border-radius: 13px; font-size: 14px; }
.btn-ghost { background: rgba(255,255,255,.04); }
.btn-orange {
  border-color: rgba(249,115,22,.6);
  background: linear-gradient(135deg, var(--warm) 0%, var(--warm2) 100%);
  box-shadow: 0 10px 26px rgba(249,115,22,.32);
}
.btn-orange:hover { box-shadow: 0 18px 38px rgba(249,115,22,.4); }
.btn-outline {
  border-color: rgba(37,99,235,.55);
  background: linear-gradient(135deg, rgba(37,99,235,.22), rgba(6,182,212,.18));
}
.btn-outline:hover { box-shadow: 0 14px 30px rgba(6,182,212,.25); }
.btn-white {
  border-color: rgba(255,255,255,.35);
  background: rgba(255,255,255,.05);
}
.btn-ripple {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  transform: translate(-50%, -50%);
  background: rgba(255,255,255,.35);
  pointer-events: none;
  animation: rippleGrow .56s ease-out forwards;
}
@keyframes rippleGrow {
  from { opacity: .45; width: 8px; height: 8px; }
  to { opacity: 0; width: 220px; height: 220px; }
}

/* Hero */
.hero { position: relative; padding: 58px 0 56px; overflow: clip; }
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: transparent;
}
.hero-orb {
  position: absolute; width: 520px; height: 520px; border-radius: 50%;
  filter: blur(120px); opacity: .35;
}
.hero-orb-1 { left: -120px; top: -90px; background: radial-gradient(circle, rgba(249,115,22,.9), transparent 65%); }
.hero-orb-2 { right: -100px; top: 40px; background: radial-gradient(circle, rgba(37,99,235,.9), transparent 65%); }
.hero-orb-3 { left: 42%; top: 280px; width: 360px; height: 360px; background: radial-gradient(circle, rgba(6,182,212,.75), transparent 65%); }
.hero-orb-1 { transform: translate3d(calc(var(--mx, 0px) * -0.02), calc(var(--my, 0px) * -0.02), 0); }
.hero-orb-2 { transform: translate3d(calc(var(--mx, 0px) * 0.02), calc(var(--my, 0px) * 0.02), 0); }
.hero-orb-3 { transform: translate3d(calc(var(--mx, 0px) * -0.01), calc(var(--my, 0px) * 0.015), 0); }
.hero-grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: .18;
}

/* Use a single-layer hero-bg to avoid visible seams */
.hero-orb,
.hero-grid-lines {
  display: none;
}

main,
.section,
.trust-bar,
.footer {
  position: relative;
  z-index: 2;
}
.hero-inner {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 30px; align-items: center; position: relative; z-index: 2;
}
.kicker {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.15); background: rgba(10,18,36,.6); color: #c8d4e7; font-size: 12px;
}
.kicker-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 6px rgba(16,185,129,.15); }
.kicker-badge { margin-left: 4px; color: #ffd7bc; font-weight: 700; }
.hero-title { margin: 18px 0 12px; font-size: clamp(44px, 7vw, 62px); line-height: 1.02; letter-spacing: -.03em; }
.hero-title-line2 { color: #eef4ff; }
.hero-grad {
  background: linear-gradient(90deg, #fb923c, #facc15);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-desc { margin: 0; max-width: 660px; color: var(--muted); line-height: 1.9; font-size: 16px; }
.hero-actions { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta { margin-top: 14px; display: flex; gap: 12px; flex-wrap: wrap; }
.meta-item {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.04); color: #c8d6ea; font-size: 12px;
}
.meta-dot { width: 8px; height: 8px; border-radius: 50%; }
.meta-dot-green { background: #22c55e; }
.meta-dot-blue { background: #38bdf8; }
.meta-dot-orange { background: #fb923c; }
.hero-quote {
  margin: 18px 0 0; padding: 13px 14px 13px 18px; border-radius: 14px;
  border-left: 3px solid var(--warm2); border: 1px solid rgba(251,146,60,.3);
  background: rgba(249,115,22,.08); color: #d5deeb; line-height: 1.7;
}
.quote-icon { font-size: 22px; color: #ffc089; margin-right: 6px; vertical-align: middle; }

/* Preview with animated border */
.preview-shell {
  position: relative; border-radius: 22px; padding: 1px;
  background: linear-gradient(130deg, rgba(249,115,22,.75), rgba(37,99,235,.75), rgba(6,182,212,.75), rgba(249,115,22,.75));
  background-size: 250% 250%;
  animation: spinGlow 8s linear infinite;
}
.preview-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 22px;
  pointer-events: none;
  opacity: 0;
  background: linear-gradient(115deg, transparent 35%, rgba(255,255,255,.26) 50%, transparent 65%);
}
.preview-shell.is-switching::after {
  opacity: .9;
  animation: previewSweep .45s ease;
}
@keyframes spinGlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}
@keyframes previewSweep {
  0% { transform: translateX(-22%); opacity: .75; }
  100% { transform: translateX(22%); opacity: 0; }
}
.preview-shell::before {
  content: ""; position: absolute; inset: 0; border-radius: 22px;
  box-shadow: 0 24px 60px rgba(0,0,0,.48), 0 0 40px rgba(37,99,235,.25);
}
.preview-titlebar {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-radius: 21px 21px 0 0;
  background: linear-gradient(180deg, rgba(18,28,50,.98), rgba(13,21,39,.98));
  border: 1px solid rgba(255,255,255,.08);
  border-bottom: none;
}
.titlebar-dots span {
  width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 5px;
}
.titlebar-dots span:nth-child(1){background:#ff5f57}
.titlebar-dots span:nth-child(2){background:#febc2e}
.titlebar-dots span:nth-child(3){background:#28c840}
.titlebar-tabs { display: flex; gap: 8px; }
.tab {
  font-size: 12px; color: #9db0ce; padding: 6px 10px; border-radius: 999px; border: 1px solid rgba(255,255,255,.12);
  background: transparent;
}
.tab-active { color: #fff; background: rgba(249,115,22,.16); border-color: rgba(249,115,22,.45); }
.preview-tab { cursor: pointer; transition: all .2s ease; }
.preview-tab:hover { color: #fff; border-color: rgba(255,255,255,.28); }
.titlebar-version { font-size: 12px; color: #d4deef; }
.preview-screen {
  position: relative; z-index: 1;
  border-radius: 0 0 21px 21px; overflow: hidden;
  border: 1px solid rgba(255,255,255,.08); border-top: none;
  background: #080f1f;
}
.preview-screen img {
  width: 100%;
  height: auto;
  max-height: 440px;
  object-fit: contain;
  display: block;
  border-radius: 0 0 20px 20px;
  opacity: 1;
  transform: scale(1);
  filter: saturate(1);
  transition: opacity .22s ease, transform .3s ease, filter .3s ease;
}
.preview-screen img.is-switching {
  opacity: .05;
  transform: scale(1.02);
  filter: saturate(.88);
}
.preview-screen img.is-switching-left {
  transform: translateX(-1.8%) scale(1.02);
}
.preview-screen img.is-switching-right {
  transform: translateX(1.8%) scale(1.02);
}

/* Banner stats */
.trust-bar { padding: 4px 0 10px; }
.trust-bar-inner {
  border: 1px solid rgba(255,255,255,.12); border-radius: 18px; padding: 20px;
  background: rgba(9,16,31,.58); backdrop-filter: blur(12px);
  display: grid; grid-template-columns: repeat(7, auto); justify-content: space-between; align-items: center; gap: 8px;
}
.trust-bar-item { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px; }
.trust-num {
  font-size: clamp(32px, 5.5vw, 42px); font-weight: 900; line-height: 1;
  background: linear-gradient(90deg, #fb923c, #06b6d4);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.trust-num sup { font-size: .55em; }
.trust-label { color: #c7d5ea; font-size: 13px; }
.trust-divider { width: 1px; height: 64px; background: linear-gradient(180deg, transparent, rgba(255,255,255,.2), transparent); }

/* Feature cards */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card {
  position: relative; border: 1px solid rgba(255,255,255,.12); border-radius: 16px;
  background: linear-gradient(180deg, rgba(13,22,43,.75), rgba(8,14,28,.78));
  padding: 18px; overflow: hidden;
  transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
  --hx: 50%;
  --hy: 50%;
}
.feature-card::before {
  content: ""; position: absolute; left: -24px; top: -24px; width: 110px; height: 110px;
  background: radial-gradient(circle, rgba(249,115,22,.35), transparent 70%); opacity: 0; transition: opacity .24s ease;
}
.feature-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(180px 120px at var(--hx) var(--hy), rgba(255,255,255,.12), transparent 70%);
  opacity: 0;
  transition: opacity .25s ease;
}
.feature-card:hover { transform: translateY(-4px); border-color: rgba(249,115,22,.45); box-shadow: 0 16px 30px rgba(0,0,0,.35); }
.feature-card:hover::before { opacity: 1; }
.feature-card:hover::after { opacity: 1; }
.feature-icon-wrap {
  width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 12px;
}
.feature-icon-blue { background: rgba(37,99,235,.12); border: 1px solid rgba(37,99,235,.5); color: #6ea8ff; }
.feature-icon-orange { background: rgba(249,115,22,.12); border: 1px solid rgba(249,115,22,.5); color: #ffb37f; }
.feature-icon-cyan { background: rgba(6,182,212,.12); border: 1px solid rgba(6,182,212,.5); color: #7eefff; }
.feature-card h3 { margin: 0 0 8px; font-size: 20px; }
.feature-card p { margin: 0; color: var(--muted); line-height: 1.75; font-size: 14px; }
.feature-tags { margin-top: 13px; display: flex; gap: 8px; flex-wrap: wrap; }
.ftag {
  font-size: 12px; color: #c7d4e7; padding: 6px 10px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.13); background: rgba(255,255,255,.03);
}

/* Showcase */
.showcase-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; align-items: stretch; }
.showcase-side { display: grid; gap: 18px; }
.showcase-card {
  border: 1px solid rgba(255,255,255,.12); border-radius: 18px; overflow: hidden;
  background: rgba(9,15,29,.75);
  transform: perspective(1200px) rotateY(-5deg);
  transition: transform .35s ease, box-shadow .35s ease;
}
.showcase-side .showcase-card { transform: perspective(1200px) rotateY(5deg); }
.showcase-card:hover { transform: perspective(1200px) rotateY(0deg); box-shadow: 0 20px 40px rgba(0,0,0,.35); }
.showcase-header {
  display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border-bottom: 1px solid rgba(255,255,255,.08);
}
.showcase-dots i { width: 9px; height: 9px; border-radius: 50%; display: inline-block; margin-right: 4px; }
.showcase-dots i:nth-child(1){background:#ff5f57}
.showcase-dots i:nth-child(2){background:#febc2e}
.showcase-dots i:nth-child(3){background:#28c840}
.showcase-tag { font-size: 12px; color: #ced8e8; }
.showcase-img { position: relative; }
.showcase-img::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 46px;
  background: linear-gradient(180deg, transparent, rgba(8,12,24,.75));
  pointer-events: none;
  z-index: 1;
}
.showcase-img img { width: 100%; height: auto; display: block; }
.showcase-zoom-trigger {
  cursor: zoom-in;
  border: none;
  padding: 0;
  margin: 0;
  width: 100%;
  text-align: left;
  font: inherit;
  color: inherit;
  background: transparent;
  outline: none;
  transition: box-shadow .25s ease;
}
.showcase-zoom-trigger:focus-visible {
  box-shadow: 0 0 0 2px rgba(249,115,22,.85), 0 0 0 4px rgba(8,12,24,.9);
}
.showcase-zoom-trigger:hover .showcase-zoom-hint { opacity: 1; transform: translateY(0); }
.showcase-zoom-hint {
  position: absolute;
  right: 10px;
  bottom: 10px;
  z-index: 2;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  padding: 6px 12px;
  border-radius: 999px;
  color: #0b1020;
  background: linear-gradient(135deg, #fb923c, #f97316);
  box-shadow: 0 4px 14px rgba(249,115,22,.35);
  opacity: 0.92;
  transform: translateY(2px);
  transition: opacity .25s ease, transform .25s ease;
  pointer-events: none;
}
@media (max-width: 640px) {
  .showcase-zoom-hint { opacity: 1; transform: none; font-size: 11px; padding: 5px 10px; }
}

/* 产品图 lightbox */
.fj-lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: grid;
  place-items: center;
  padding: 16px;
  box-sizing: border-box;
}
.fj-lightbox[hidden] { display: none !important; }
.fj-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 8, 18, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: zoom-out;
}
.fj-lightbox-inner {
  position: relative;
  z-index: 1;
  max-width: min(96vw, 1400px);
  max-height: 92vh;
  animation: fjLbIn .28s ease both;
}
@keyframes fjLbIn {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .fj-lightbox-inner { animation: none; }
}
.fj-lightbox-img {
  display: block;
  max-width: min(96vw, 1400px);
  max-height: 86vh;
  width: auto;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 24px 80px rgba(0,0,0,.55), 0 0 0 1px rgba(255,255,255,.1);
}
.fj-lightbox-close {
  position: absolute;
  top: -12px;
  right: -12px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(15,23,42,.95);
  color: #fff;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background .2s ease, transform .2s ease;
  z-index: 2;
}
.fj-lightbox-close:hover { background: rgba(249,115,22,.95); transform: scale(1.05); }
.fj-lightbox-close:focus-visible {
  outline: 2px solid #fb923c;
  outline-offset: 2px;
}
@media (max-width: 640px) {
  .fj-lightbox-close { top: -6px; right: -6px; width: 36px; height: 36px; font-size: 22px; }
}
.showcase-main .showcase-img img {
  -webkit-box-reflect: below 1px linear-gradient(transparent 70%, rgba(0,0,0,.28) 100%);
}
.showcase-info-card {
  border: 1px solid rgba(255,255,255,.12); border-radius: 16px; padding: 14px; display: flex; gap: 10px; align-items: flex-start;
  background: rgba(11,18,35,.68);
}
.info-icon {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  color: #8acbff; border: 1px solid rgba(6,182,212,.5); background: rgba(6,182,212,.14);
}
.info-title { font-weight: 700; margin-bottom: 6px; }
.info-desc { color: var(--muted); font-size: 13px; line-height: 1.65; }

/* Stats section */
.stats-card {
  position: relative; border: 1px solid rgba(255,255,255,.12); border-radius: 20px; overflow: hidden;
  background: linear-gradient(180deg, rgba(9,17,34,.88), rgba(7,14,28,.9));
}
.stats-bg { position: absolute; inset: 0; pointer-events: none; }
.stats-orb { position: absolute; border-radius: 50%; filter: blur(100px); opacity: .35; }
.stats-orb-1 { width: 340px; height: 340px; background: rgba(249,115,22,.8); left: -90px; top: 60px; }
.stats-orb-2 { width: 340px; height: 340px; background: rgba(37,99,235,.8); right: -90px; top: 20px; }
.stats-content { position: relative; z-index: 1; padding: 24px; display: grid; grid-template-columns: .95fr 1.05fr; gap: 18px; }
.stats-title { margin: 12px 0 10px; font-size: 42px; line-height: 1.05; }
.stats-desc { color: var(--muted); line-height: 1.8; margin-bottom: 16px; }
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.stat-card {
  border: 1px solid rgba(255,255,255,.12); border-radius: 14px; padding: 14px;
  background: rgba(8,15,30,.58);
}
.stat-card-icon {
  width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; margin-bottom: 10px;
}
.stat-icon-orange { background: rgba(249,115,22,.15); border: 1px solid rgba(249,115,22,.45); color: #ffaf7a; }
.stat-icon-green { background: rgba(16,185,129,.15); border: 1px solid rgba(16,185,129,.45); color: #76e2bf; }
.stat-icon-blue { background: rgba(37,99,235,.15); border: 1px solid rgba(37,99,235,.45); color: #84b4ff; }
.stat-icon-purple { background: rgba(168,85,247,.15); border: 1px solid rgba(168,85,247,.45); color: #d6a7ff; }
.stat-card-num {
  font-size: clamp(28px, 4.5vw, 40px); font-weight: 900; letter-spacing: -.02em; line-height: 1.1;
  background: linear-gradient(90deg, #fb923c, #93c5fd);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat-card-label { margin-top: 6px; color: #c5d4ea; line-height: 1.6; font-size: 13px; }

/* Testimonials */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.testimonial-card {
  position: relative; border: 1px solid rgba(255,255,255,.12); border-radius: 16px; padding: 16px;
  background: rgba(10,17,33,.72); overflow: hidden; transition: border-color .25s ease, transform .25s ease;
  display: flex;
  flex-direction: column;
  --hx: 50%;
  --hy: 50%;
}
.testimonial-card::before {
  content: "“"; position: absolute; right: 10px; top: -18px; font-size: 80px; color: rgba(255,255,255,.09);
}
.testimonial-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(180px 120px at var(--hx) var(--hy), rgba(255,255,255,.10), transparent 70%);
  opacity: 0;
  transition: opacity .25s ease;
}
.testimonial-card:hover { transform: translateY(-3px); border-left: 3px solid var(--warm2); }
.testimonial-card:hover::after { opacity: 1; }
.testimonial-stars { color: #f59e0b; letter-spacing: 1px; margin-bottom: 8px; }
.testimonial-text { margin: 0 0 14px; color: #d2dced; line-height: 1.75; }
.testimonial-text { flex: 1; }
.testimonial-author { display: flex; align-items: center; gap: 10px; }
.author-avatar {
  width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; color: #fff;
}
.author-avatar-orange { background: linear-gradient(135deg, #f97316, #fb923c); }
.author-avatar-blue { background: linear-gradient(135deg, #2563eb, #38bdf8); }
.author-avatar-green { background: linear-gradient(135deg, #10b981, #22c55e); }
.author-name { font-weight: 700; }
.author-role { font-size: 12px; color: var(--muted); }

/* CTA */
.cta-card {
  position: relative; overflow: hidden;
  border: 1px solid rgba(255,255,255,.12); border-radius: 20px; padding: 24px;
  background: linear-gradient(180deg, rgba(8,15,30,.9), rgba(6,11,24,.95));
}
.cta-card::before {
  content: ""; position: absolute; inset: -130% -20%;
  background: linear-gradient(110deg, transparent 40%, rgba(255,255,255,.08) 50%, transparent 60%);
  animation: sweep 8s linear infinite;
}
@keyframes sweep {
  from { transform: translateX(-20%); }
  to { transform: translateX(20%); }
}
.cta-content { position: relative; z-index: 1; }
.cta-title { margin: 12px 0 10px; font-size: clamp(36px, 5vw, 52px); line-height: 1.05; }
.cta-desc { margin: 0; max-width: 720px; color: var(--muted); line-height: 1.8; }
.cta-actions { margin-top: 18px; display: flex; gap: 12px; flex-wrap: wrap; }
.cta-footnote { margin-top: 12px; display: flex; gap: 14px; flex-wrap: wrap; color: #c3d2e9; font-size: 12px; }

/* Footer — 独立底栏背景（与顶栏同系：渐变 + 磨砂） */
.footer {
  padding: 34px 0 calc(42px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid rgba(255,255,255,.1);
  position: relative;
  isolation: isolate;
  background: linear-gradient(0deg, rgba(6,11,24,.94), rgba(6,11,24,.48));
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  box-shadow: 0 -12px 48px rgba(0, 0, 0, .28);
}
.footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(90deg, var(--warm2), transparent 40%, var(--accent2));
}
.footer-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 26px;
  align-items: start;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}
.footer-brand .brand {
  align-items: center;
}
.footer-tagline { color: #c4d2e8; margin: 12px 0 8px; line-height: 1.7; }
.footer-copy { color: var(--muted); font-size: 12px; }
.footer-links-wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px 22px;
}
.footer-link-title {
  font-weight: 700;
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: .02em;
  color: #e2eaf5;
}
.footer-link-group nav {
  display: grid;
  gap: 2px;
}
.footer-link-group a {
  color: #b9c8de;
  font-size: 13px;
  line-height: 1.35;
  border-radius: 8px;
  padding: 8px 10px;
  margin: 0 -10px;
  transition: color .2s ease, background .2s ease;
}
.footer-link-group a:hover {
  color: #fff;
  background: rgba(255,255,255,.06);
}

/* Animate on scroll */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
[data-animate="fade-left"] { transform: translateX(24px); }
[data-animate="fade-right"] { transform: translateX(-24px); }
[data-animate].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .topbar-inner,
  .topbar .logo-wrap,
  .topbar .logo-img,
  .topbar .brand-title b,
  .topbar .topbar-actions .btn {
    transition-duration: 0.01ms !important;
  }
}

/* Responsive */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: 1fr; }
  .stats-content { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 960px) {
  .nav { display: none; }
  .topbar-inner {
    flex-wrap: wrap;
    row-gap: 10px;
  }
  .topbar-actions {
    flex: 1 1 auto;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 8px;
    min-width: 0;
  }
  .topbar-actions .btn { height: 34px; padding: 0 12px; }
  .features-grid { grid-template-columns: 1fr; }
  .trust-bar-inner { grid-template-columns: 1fr 1fr; row-gap: 14px; }
  .trust-divider { display: none; }
}
/* 页脚链接：平板宽度下两列，避免三列过挤 */
@media (max-width: 900px) and (min-width: 701px) {
  .footer-links-wrap {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 20px;
  }
}
@media (max-width: 700px) {
  .container { width: min(var(--max), calc(100% - 24px)); }
  .section { padding: 52px 0; }
  .section-title, .stats-title, .cta-title { font-size: 32px; }
  .hero-title { font-size: 42px; }
  .hero-desc { font-size: 15px; line-height: 1.8; }
  .topbar-inner { padding: 10px 0; }
  .brand-title span { display: none; }
  .preview-titlebar { grid-template-columns: auto 1fr; row-gap: 8px; }
  .titlebar-tabs { overflow-x: auto; scrollbar-width: none; }
  .titlebar-tabs::-webkit-scrollbar { display: none; }
  .tab { white-space: nowrap; }
  .titlebar-version { grid-column: 2; justify-self: end; font-size: 11px; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer {
    padding: 26px 0 calc(38px + env(safe-area-inset-bottom, 0px));
  }
  .footer-inner {
    gap: 26px;
  }
  .footer-brand {
    align-items: center;
    text-align: center;
    max-width: 420px;
    margin: 0 auto;
    width: 100%;
  }
  .footer-brand .brand {
    justify-content: center;
  }
  .footer-tagline {
    margin-top: 10px;
  }
  .footer-links-wrap {
    grid-template-columns: 1fr;
    gap: 0;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
  }
  .footer-link-group {
    padding: 14px 0 18px;
    border-bottom: 1px solid rgba(255,255,255,.1);
  }
  .footer-link-group:first-child {
    padding-top: 4px;
  }
  .footer-link-group:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .footer-link-title {
    margin-bottom: 6px;
    text-align: center;
  }
  .footer-link-group nav {
    gap: 0;
  }
  .footer-link-group a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 14px;
    margin: 0;
    font-size: 14px;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }
  .hero-actions .btn, .cta-actions .btn { width: 100%; justify-content: center; }
  .topbar-inner {
    flex-wrap: nowrap;
    gap: 8px;
  }
  .topbar-actions {
    display: flex;
    flex-wrap: nowrap;
    gap: 6px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    max-width: min(100vw - 140px, 520px);
    margin-left: auto;
    padding-bottom: 2px;
  }
  .topbar-actions::-webkit-scrollbar { display: none; }
  .topbar-actions .btn {
    flex-shrink: 0;
    height: 32px;
    padding: 0 10px;
    font-size: 11px;
    gap: 5px;
  }
  .topbar-actions .btn svg {
    width: 12px;
    height: 12px;
  }
}
@media (max-width: 430px) {
  .container { width: min(var(--max), calc(100% - 20px)); }
  .section { padding: 44px 0; }
  .section-title, .stats-title, .cta-title { font-size: 28px; line-height: 1.08; }
  .hero { padding: 42px 0 34px; }
  .hero-title { font-size: 34px; line-height: 1.03; margin: 14px 0 10px; }
  .hero-desc { font-size: 14px; line-height: 1.72; }
  .hero-actions { gap: 10px; margin-top: 18px; }
  .btn-lg { height: 42px; font-size: 14px; }
  .hero-meta { gap: 8px; }
  .meta-item { font-size: 11px; padding: 5px 9px; }
  .hero-quote { font-size: 13px; line-height: 1.65; }
  .preview-shell { border-radius: 16px; }
  .preview-titlebar { padding: 8px 9px; border-radius: 15px 15px 0 0; }
  .titlebar-tabs { gap: 6px; }
  .tab { font-size: 11px; padding: 6px 9px; min-height: 32px; }
  .titlebar-version { font-size: 10px; }
  .preview-screen { border-radius: 0 0 15px 15px; }
  .preview-screen img { max-height: 300px; border-radius: 0 0 14px 14px; }
  .trust-bar { padding: 2px 0 6px; }
  .trust-bar-inner { padding: 14px 12px; gap: 10px; }
  .trust-num { font-size: 28px; }
  .trust-label { font-size: 12px; }
  .feature-card { padding: 15px; border-radius: 14px; }
  .feature-card h3 { font-size: 18px; }
  .feature-card p { font-size: 13px; line-height: 1.7; }
  .stats-content { padding: 16px; gap: 14px; }
  .stat-card { padding: 12px; }
  .stat-card-num { font-size: 30px; }
  .testimonial-card { padding: 14px; }
  .testimonial-text { font-size: 13px; line-height: 1.7; }
  .cta-card { padding: 18px 14px; border-radius: 16px; }
  .cta-actions { margin-top: 14px; gap: 10px; }
  .cta-footnote { font-size: 11px; gap: 8px; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 36px; }
  .kicker { font-size: 11px; padding: 6px 10px; }
  .trust-num { font-size: 30px; }
  .preview-titlebar { padding: 8px 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .hero-orb-1, .hero-orb-2, .hero-orb-3 { transform: none !important; }
}