:root {
  --accent: #3dd0ff;
  --accent-strong: #16b6ec;
  --on-accent: #062633;
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --hairline: rgba(0, 0, 0, 0.1);
  --nav-bg: rgba(255, 255, 255, 0.72);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --page: 1024px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", "Microsoft YaHei", "PingFang SC", "Noto Sans SC",
    "Noto Sans CJK SC", sans-serif;
}

[data-theme="dark"] {
  --accent: #ff9f45;
  --accent-strong: #ff8a1f;
  --on-accent: #241000;
  --bg: #000000;
  --bg-alt: #101012;
  --surface: #161618;
  --text: #f5f5f7;
  --muted: #a1a1a6;
  --hairline: rgba(255, 255, 255, 0.12);
  --nav-bg: rgba(20, 20, 22, 0.72);
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body {
  margin: 0;
  font-family: var(--font);
  font-weight: 400;
  color: var(--text);
  background: var(--bg);
  line-height: 1.47;
  letter-spacing: -0.01em;
  overflow-x: hidden;
  transition: background 400ms ease, color 400ms ease;
}
button, input { font-family: inherit; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
h1, h2, h3 { margin: 0; font-weight: 600; line-height: 1.06; letter-spacing: -0.03em; }
p { margin: 0; }

.wrap {
  width: min(calc(100% - 44px), var(--page));
  margin: 0 auto;
}

/* ---- Nav ---- */
.top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 0;
  background: transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-family: var(--font);
  transition: background 200ms ease, backdrop-filter 200ms ease;
}
.top.is-scrolled {
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
}
.top-shell {
  position: relative;
  width: min(100%, 80rem);
  margin: 0 auto;
}
.top-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  min-height: 70px;
  gap: 12px;
  padding: 16px;
}
@media (min-width: 768px) {
  .top-inner {
    grid-template-columns: 1fr auto 1fr;
    padding: 16px 32px;
  }
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-self: start;
  flex-shrink: 0;
  color: #fafafa;
  transition: opacity 180ms ease;
}
.brand:hover { opacity: 0.8; }
.brand-emblem {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  border: 0;
  box-shadow: 0 0 16px rgba(102, 126, 234, 0.45);
  color: #fff;
}
.brand-pulse {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  animation: pulse 2.4s ease-out infinite;
}
.brand-mark {
  display: grid;
  place-items: center;
  color: currentColor;
  line-height: 0;
}
.brand-name {
  font-family: var(--font);
  font-weight: 400;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  text-transform: none;
  color: #fafafa;
}
.nav-capsule {
  display: none;
  align-items: center;
  justify-self: center;
  padding: 0;
  border-radius: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: 0;
}
.nav-capsule a {
  position: relative;
  padding: 8px 12px;
  color: #fafafa;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: color 180ms ease;
}
.nav-capsule a:hover { color: rgba(255, 255, 255, 0.62); }
.nav-capsule a.is-on { color: #fafafa; }
.tools {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 8px;
}
.glass-btn {
  width: auto;
  height: 36px;
  min-width: 36px;
  padding: 0 8px;
  border-radius: 0;
  border: 0;
  background: transparent;
  color: #fafafa;
  font-size: 14px;
  font-weight: 500;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: color 180ms ease;
}
.glass-btn:hover { color: rgba(255, 255, 255, 0.62); }
.glass-btn[aria-pressed="true"] { color: #fafafa; }
.nav-explore {
  display: none;
  align-items: center;
  min-height: 38px;
  padding: 8px 12px;
  border-radius: 6px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: #fafafa;
  font-size: 14px;
  font-weight: 500;
  transition: transform 180ms ease, border-color 180ms ease;
}
.nav-explore:hover { transform: translateY(-2px); border-color: #fff; }
.menu-btn { display: grid; }
@media (min-width: 768px) {
  .nav-capsule { display: flex; }
  .nav-explore { display: inline-flex; }
  .menu-btn { display: none; }
}
@media (max-width: 1100px) {
  .nav-capsule a { padding: 8px 8px; }
  .brand-name { font-size: 1.05rem; }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 46px;
  padding: 0 24px;
  border-radius: 980px;
  border: 0;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform 120ms ease, background 200ms ease, filter 200ms ease;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent-strong); color: var(--on-accent); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost {
  background: transparent;
  color: var(--accent-strong);
  min-height: auto;
  padding: 0;
  font-size: 16px;
}
.btn-ghost:active { transform: none; }
.btn-ghost:hover { text-decoration: underline; }
.btn-ghost .chev { transition: transform 200ms ease; }
.btn-ghost:hover .chev { transform: translateX(3px); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--hairline);
}
.btn-outline:hover { background: var(--bg-alt); }

/* ---- Hero (quantum neural net) ---- */
.hero-stage {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 100vh;
  background: #050508;
  color: #fff;
  overflow: hidden;
  font-family: Outfit, var(--font);
}
#heroNet {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.85;
}
.hero-veil {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(to right, #050508, rgba(5, 5, 8, 0.6), transparent);
}
.hero-copy {
  position: relative;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 100vh;
  width: min(calc(100% - 48px), 42rem);
  margin: 0 auto;
  padding: 96px 0 64px;
}
.hero-copy a { pointer-events: auto; }
.hero-badge {
  display: inline-block;
  margin: 0 0 24px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(102, 126, 234, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.3);
  color: #a5b4fc;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.hero-stage h1 {
  margin: 0 0 24px;
  font-family: Outfit, var(--font);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  text-transform: none;
  white-space: pre-line;
  background: linear-gradient(to bottom right, #fff, #fff, #a5b4fc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.45));
}
@media (min-width: 768px) {
  .hero-stage h1 { font-size: 3.75rem; }
}
@media (min-width: 1024px) {
  .hero-stage h1 { font-size: 4.5rem; }
}
.hero-sub {
  margin: 0 0 8px;
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.92);
  max-width: 36rem;
}
.hero-lead {
  margin: 0 0 40px;
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
  max-width: 36rem;
}
@media (min-width: 768px) {
  .hero-sub { font-size: 1.25rem; }
}
.hero-actions {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 0;
}
@media (min-width: 640px) {
  .hero-actions { flex-direction: row; }
}
.hero-discover,
.hero-connect {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 0;
  padding: 16px 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: transform 300ms ease, box-shadow 300ms ease, background 300ms ease, border-color 300ms ease;
}
.hero-discover {
  background: #F4BA3B;
  border: 0;
  color: #1c1404;
  font-weight: 700;
  box-shadow: 0 12px 28px rgba(244, 186, 59, 0.35);
}
.hero-discover:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(244, 186, 59, 0.48);
}
.hero-play {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.9);
  display: grid;
  place-items: center;
}
.hero-play::before {
  content: "";
  border-style: solid;
  border-width: 5px 0 5px 8px;
  border-color: transparent transparent transparent #fff;
  margin-left: 2px;
}
.hero-connect {
  padding: 10px 22px 10px 10px;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #fff;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.hero-connect:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}
.hero-stage + .section { border-top: 1px solid var(--hairline); }
.faq + .section { border-top: 1px solid var(--hairline); }
.kicker {
  color: var(--accent-strong);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.hero h1 {
  font-size: clamp(2.1rem, 6.4vw, 5rem);
  letter-spacing: -0.04em;
  white-space: pre-line;
  overflow-wrap: break-word;
}
.hero .lead {
  margin: 20px auto 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.2vw, 1.45rem);
  font-weight: 400;
  line-height: 1.35;
  max-width: 30em;
  overflow-wrap: break-word;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  justify-content: center;
  align-items: center;
  margin-top: 32px;
}

/* ---- Product shot (app window mock) ---- */
.shot-wrap { display: grid; place-items: center; padding: 40px 0 8px; }
.device {
  width: min(420px, 88vw);
  border-radius: 20px;
  overflow: hidden;
  background: #0c0c0e;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.28), 0 6px 18px rgba(0, 0, 0, 0.16);
}
[data-theme="dark"] .device { box-shadow: 0 30px 80px rgba(0, 0, 0, 0.7); }
.device-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  background: #161619;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.tl { width: 11px; height: 11px; border-radius: 50%; }
.tl.r { background: #ff5f57; }
.tl.y { background: #febc2e; }
.tl.g { background: #28c840; }
.device-title {
  position: absolute;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0;
}
.device-screen {
  padding: 30px 24px 34px;
  background: radial-gradient(120% 80% at 50% 0%, #17171b 0%, #0c0c0e 60%);
  color: #f5f5f7;
  text-align: center;
}
.app-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: #a1a1a6;
}
.app-status .live {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 70%, transparent);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 60%, transparent); }
  70% { box-shadow: 0 0 0 9px rgba(0, 0, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 0, 0, 0); }
}
.app-orb {
  width: 150px;
  height: 150px;
  margin: 22px auto 8px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  position: relative;
  color: var(--accent);
  background: radial-gradient(circle at 50% 45%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 65%);
}
.app-orb svg { width: 46px; }
.app-orb .ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--accent) 70%, transparent);
}
.app-orb .ring::after {
  content: "";
  position: absolute;
  inset: -9px;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
}
.app-timer {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.app-node {
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: #c7c7cc;
}
.app-node .ms { color: var(--accent); }
.app-modes {
  margin-top: 20px;
  display: inline-flex;
  padding: 3px;
  border-radius: 980px;
  background: rgba(255, 255, 255, 0.06);
  gap: 2px;
}
.app-modes span {
  font-size: 12px;
  color: #a1a1a6;
  padding: 6px 16px;
  border-radius: 980px;
}
.app-modes span.on {
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
}

/* ---- Trusted by / logo marquee ---- */
.trusted {
  padding: 64px 0 72px;
  background: var(--bg);
}
.trusted-inner {
  width: min(calc(100% - 48px), 1280px);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}
.trusted-head { text-align: center; }
.trusted-head h2 {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: clamp(1.75rem, 3.6vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.trusted-head p {
  margin-top: 12px;
  font-size: clamp(0.95rem, 1.7vw, 1.125rem);
  color: var(--muted);
  line-height: 1.5;
}
.trusted-marquee {
  position: relative;
  width: 100%;
  overflow: hidden;
}
.trusted-fade {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 32px;
  z-index: 1;
  pointer-events: none;
}
.trusted-fade-l {
  left: 0;
  background: linear-gradient(to right, var(--bg), transparent);
}
.trusted-fade-r {
  right: 0;
  background: linear-gradient(to left, var(--bg), transparent);
}
.trusted-track {
  display: flex;
  width: max-content;
  animation: trusted-scroll 30s linear infinite;
}
.trusted-set {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 16px;
  padding: 0 8px;
}
.trusted-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  width: 80px;
  flex-shrink: 0;
  filter: grayscale(1);
  opacity: 0.6;
  transition: filter 300ms ease, opacity 300ms ease;
}
.trusted-logo:hover {
  filter: grayscale(0);
  opacity: 1;
}
.trusted-logo img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
}
@keyframes trusted-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (min-width: 640px) {
  .trusted-fade { width: 48px; }
  .trusted-set { gap: 24px; padding: 0 12px; }
  .trusted-logo { height: 48px; width: 96px; }
}
@media (min-width: 768px) {
  .trusted-fade { width: 64px; }
  .trusted-set { gap: 32px; padding: 0 16px; }
  .trusted-logo { height: 56px; width: 112px; }
}
@media (min-width: 1024px) {
  .trusted-fade { width: 80px; }
  .trusted-set { gap: 48px; }
  .trusted-logo { height: 64px; width: 128px; }
}
@media (prefers-reduced-motion: reduce) {
  .trusted-track { animation: none; }
}

/* ---- Sections ---- */
.section { padding: 96px 0; }
/* 板块统一底色（不再深浅交替），改用细分割线区分 */
.section + .section,
.hero + .section { border-top: 1px solid var(--hairline); }
.section-head { text-align: center; max-width: 34em; margin: 0 auto 44px; }
.section-head h2 { font-size: clamp(1.9rem, 4.2vw, 3rem); letter-spacing: -0.035em; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: clamp(1rem, 2vw, 1.25rem); line-height: 1.4; }

.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 22px;
  padding: 28px;
}
/* 卡片统一使用 --surface，不再随 alt 变色 */
.card h3 { font-size: 21px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 8px; }
.card p, .muted { color: var(--muted); font-size: 15px; line-height: 1.45; }

/* ---- Feature icon cards ---- */
.feats .feat {
  transition: opacity 700ms cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 360ms cubic-bezier(0.2, 0.8, 0.2, 1),
    border-color 300ms ease, box-shadow 300ms ease;
}
.feat:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--hairline));
  box-shadow: 0 18px 40px color-mix(in srgb, var(--accent) 16%, transparent);
}
.feat-ico {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 20px;
  border-radius: 15px;
  color: var(--accent-strong);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  animation: floaty 5.5s ease-in-out infinite;
  transition: transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1), background 320ms ease;
}
.feat:nth-child(2) .feat-ico { animation-delay: -1.3s; }
.feat:nth-child(3) .feat-ico { animation-delay: -2.6s; }
.feat:nth-child(4) .feat-ico { animation-delay: -3.9s; }
.feat-ico svg {
  width: 26px;
  height: 26px;
  transition: transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.feat:hover .feat-ico { background: color-mix(in srgb, var(--accent) 24%, transparent); }
.feat:hover .feat-ico svg { transform: scale(1.15) rotate(-4deg); }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ---- Why: alternating feature rows ---- */
/* 放开该区标题容器宽度，让较短的中文副标题自然单行显示（英文过长时仍会优雅换行） */
#why .section-head { max-width: none; }
#nodes .section-head { max-width: none; }
#nodes .section-head p {
  white-space: nowrap;
}
@media (max-width: 640px) {
  #nodes .section-head p { white-space: normal; }
}
.why-rows {
  display: flex;
  flex-direction: column;
  gap: clamp(48px, 8vw, 96px);
  margin-top: 52px;
}
.why-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(32px, 6vw, 84px);
}
/* 交替：偶数行图片挪到右侧 */
.why-row:nth-child(even) .why-media { order: 2; }

.why-media { display: flex; justify-content: center; }
.why-media-inner {
  position: relative;
  width: 100%;
  max-width: 440px;
  aspect-ratio: 1;
  border-radius: 32px;
  overflow: hidden;
  background: #eef4ff;
  border: 1px solid var(--hairline);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.08);
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.why-row:hover .why-media-inner { transform: translateY(-6px); }
[data-theme="dark"] .why-media-inner {
  background: #05070c;
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}
.why-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* 浅色用彩色版，深色用黑客深底版 */
.why-img.dark { display: none; }
[data-theme="dark"] .why-img.light { display: none; }
[data-theme="dark"] .why-img.dark { display: block; }

.why-copy { max-width: 30rem; }
.why-num {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--accent-strong);
  font-weight: 600;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.why-num::before {
  content: "";
  width: 40px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
}
.why-copy h3 {
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin-bottom: 14px;
}
.why-copy p {
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.55;
  color: var(--muted);
  max-width: 34ch;
}
@media (max-width: 760px) {
  .why-row { grid-template-columns: 1fr; gap: 22px; }
  .why-row:nth-child(even) .why-media { order: 0; }
  .why-media-inner { max-width: 340px; }
  .why-copy { max-width: none; }
}

/* 通用绘制 */
@keyframes drawLine {
  0% { stroke-dashoffset: var(--len, 90); }
  38%, 72% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: var(--len, 90); }
}
@keyframes dashFlow { to { stroke-dashoffset: -100; } }
@keyframes travel { from { offset-distance: 0%; } to { offset-distance: 100%; } }

/* a0 公共网络安全：扩散信号环 + 数据包被盾牌拦下 + 对勾 */
.a0 .sig { transform-origin: 60px 32px; opacity: 0; animation: sigRing 2.4s ease-out infinite; }
.a0 .sig.s2 { animation-delay: 0.8s; }
.a0 .sig.s3 { animation-delay: 1.6s; }
@keyframes sigRing { 0% { transform: scale(0.4); opacity: 0.9; } 80% { opacity: 0; } 100% { transform: scale(2.6); opacity: 0; } }
.a0 .hot { animation: throb 2s ease-in-out infinite; }
.a0 .pkt { offset-rotate: 0deg; opacity: 0; }
.a0 .p1 { offset-path: path("M18 84 L54 74"); animation: pktIn 2.6s ease-in infinite; }
.a0 .p2 { offset-path: path("M102 88 L66 74"); animation: pktIn 2.6s ease-in infinite 0.9s; }
.a0 .p3 { offset-path: path("M60 108 L60 96"); animation: pktIn 2.6s ease-in infinite 1.7s; }
@keyframes pktIn {
  0% { offset-distance: 0%; opacity: 0; }
  15% { opacity: 1; }
  70% { offset-distance: 100%; opacity: 1; }
  78% { offset-distance: 100%; opacity: 0; transform: scale(1.6); }
  100% { opacity: 0; }
}
.a0 .shield { animation: throb 3s ease-in-out infinite; }
.a0 .tick { --len: 24; stroke-dasharray: 24; stroke-dashoffset: 24; animation: drawLine 3s ease-in-out infinite; }

/* a1 跨地区访问：地球微转 + 轨道卫星 + 弧线飞包 */
.a1 .globe { transform-origin: 60px 64px; animation: spin 26s linear infinite; }
.a1 .orbit { stroke-dasharray: 2 6; animation: dashFlow 6s linear infinite; }
.a1 .sat { offset-path: path("M60 47 A 42 17 0 1 1 59.9 47"); animation: travel 5s linear infinite; }
.a1 .arc { stroke-dasharray: 5 7; animation: dashFlow 1.6s linear infinite; }
.a1 .packet { offset-path: path("M40 76 C 48 42, 72 42, 80 76"); animation: travel 2.6s ease-in-out infinite; }
.a1 .pin { animation: throb 2s ease-in-out infinite; }
.a1 .pinB { animation-delay: 1s; }
@keyframes spin { to { transform: rotate(360deg); } }

/* a2 线路优化：折线绘制 + 面积 + 扫描光 + 实时点 */
.a2 .line { --len: 120; stroke-dasharray: 120; stroke-dashoffset: 120; animation: drawLine 4s ease-in-out infinite; }
.a2 .area { opacity: 0; animation: areaFade 4s ease-in-out infinite; }
@keyframes areaFade { 0%, 30% { opacity: 0; } 55%, 80% { opacity: 1; } 100% { opacity: 0; } }
.a2 .sweep { animation: sweepMove 3.4s ease-in-out infinite; }
@keyframes sweepMove { 0% { transform: translateX(0); } 100% { transform: translateX(128px); } }
.a2 .live { animation: throb 1.6s ease-in-out infinite; }
.a2 .livering { transform-origin: 98px 48px; opacity: 0; animation: ping 1.6s ease-out infinite; }
@keyframes ping { 0% { transform: scale(0.6); opacity: 0.8; } 100% { transform: scale(3); opacity: 0; } }

/* a3 在线隐私：字段被打码 + 锁徽章 */
.a3 .redact { animation: redact 3.2s ease-in-out infinite; }
.a3 .rd1 { width: 28px; }
.a3 .rd2 { width: 22px; animation-delay: 0.2s; }
.a3 .rd3 { width: 26px; animation-delay: 0.4s; }
@keyframes redact { 0%, 10% { transform: scaleX(0); } 45%, 80% { transform: scaleX(1); } 100% { transform: scaleX(0); } }
.a3 .redact { transform-origin: 60px 50px; }
.a3 .lockbadge { animation: throb 2.6s ease-in-out infinite; }

/* a4 系统级出网：应用窗口闪烁 + 隧道流动 + 数据包穿隧道 */
.a4 .win { animation: winBlink 3s ease-in-out infinite; }
.a4 .w2 { animation-delay: 0.5s; }
.a4 .w3 { animation-delay: 1s; }
@keyframes winBlink { 0%, 100% { stroke-opacity: 0.3; } 50% { stroke-opacity: 0.75; } }
.a4 .pipeline { stroke-dasharray: 2 7; animation: dashFlow 1.2s linear infinite; }
.a4 .tpkt { offset-path: path("M60 58 C 84 58, 92 72, 100 92"); opacity: 0; }
.a4 .t1 { animation: tunnel 2.4s linear infinite; }
.a4 .t2 { animation: tunnel 2.4s linear infinite 0.8s; }
.a4 .t3 { animation: tunnel 2.4s linear infinite 1.6s; }
@keyframes tunnel {
  0% { offset-distance: 0%; opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}

/* a5 会员权益：卡片高光扫过 + 星光闪烁 + 对勾 */
.a5 .shine { animation: shineMove 3.6s ease-in-out infinite; }
@keyframes shineMove { 0% { transform: translateX(0); } 60%, 100% { transform: translateX(96px); } }
.a5 .spark { transform-origin: center; animation: twinkle 2.4s ease-in-out infinite; }
.a5 .sp1 { transform-origin: 84px 37px; }
.a5 .sp2 { transform-origin: 30px 39px; animation-delay: 1.2s; }
@keyframes twinkle { 0%, 100% { transform: scale(0.5) rotate(0deg); opacity: 0.3; } 50% { transform: scale(1) rotate(90deg); opacity: 1; } }
.a5 .check { --len: 30; stroke-dasharray: 30; stroke-dashoffset: 30; animation: drawLine 3.2s ease-in-out infinite; }

@keyframes throb { 0%, 100% { opacity: 0.6; } 50% { opacity: 1; } }

.platform {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 22px;
  padding: 40px 26px;
  text-align: center;
}
.platform strong { display: block; font-size: 24px; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.02em; }

/* ---- Pricing (glass island) ---- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.price-sec {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 100vh;
  padding: 80px 0 96px;
  color: #fff;
  font-family: "Plus Jakarta Sans", var(--font);
  background: #000;
  border-top: 0;
}
.price-sec::selection,
.price-sec *::selection {
  background: rgba(236, 72, 153, 0.3);
  color: #fff;
}
@keyframes priceBgShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.price-aurora {
  display: none;
}
.price-blob {
  position: absolute;
  border-radius: 50%;
  mix-blend-mode: screen;
  opacity: 0.6;
}
.price-blob-1 {
  width: 600px;
  height: 600px;
  top: -80px;
  left: -80px;
  background: #7e22ce;
  animation: priceBlob1 22s ease infinite;
}
.price-blob-2 {
  width: 500px;
  height: 500px;
  top: -40px;
  right: -60px;
  background: #0891b2;
  animation: priceBlob2 18s ease infinite;
}
.price-blob-3 {
  width: 700px;
  height: 700px;
  bottom: -160px;
  left: -120px;
  background: #db2777;
  animation: priceBlob3 25s ease infinite;
}
.price-blob-4 {
  width: 400px;
  height: 400px;
  bottom: -40px;
  right: -40px;
  background: #4f46e5;
  animation: priceBlob4 20s ease infinite;
}
@keyframes priceBlob1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(90px, -70px) scale(1.35); }
  66% { transform: translate(-50px, 80px) scale(0.82); }
}
@keyframes priceBlob2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  40% { transform: translate(-80px, 60px) scale(1.25); }
  70% { transform: translate(40px, -90px) scale(0.88); }
}
@keyframes priceBlob3 {
  0%, 100% { transform: translate(0, 0) scale(1.1); }
  50% { transform: translate(100px, -80px) scale(0.8); }
}
@keyframes priceBlob4 {
  0%, 100% { transform: translate(0, 0) scale(0.9); }
  35% { transform: translate(-60px, -40px) scale(1.4); }
  70% { transform: translate(70px, 50px) scale(1); }
}
.price-wrap {
  position: relative;
  z-index: 10;
  width: min(calc(100% - 32px), 80rem);
  margin: 0 auto;
  padding: 0 8px;
}
@media (min-width: 640px) {
  .price-wrap { padding: 0 24px; width: min(calc(100% - 48px), 80rem); }
}
.price-head {
  text-align: center;
  max-width: 42rem;
  margin: 0 auto 40px;
  animation: priceFadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
}
.price-kicker {
  margin: 0 0 16px;
  color: #a5b4fc;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.price-head h2 {
  font-size: clamp(1.875rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin: 0 0 24px;
  white-space: pre-line;
  filter: drop-shadow(0 10px 16px rgba(0, 0, 0, 0.35));
  background: linear-gradient(to right, #fff, #a5b4fc, #fbcfe8);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.price-lead {
  margin: 0 auto;
  max-width: 42rem;
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.7;
  color: rgba(224, 231, 255, 0.7);
}
@media (min-width: 768px) {
  .price-lead { font-size: 1.25rem; }
}
.price-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 0 auto 48px;
  animation: priceFadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}
.price-toggle-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.5);
  transition: color 300ms ease;
  cursor: pointer;
}
.price-toggle-label.is-on { color: rgba(255, 255, 255, 0.8); }
.price-switch {
  position: relative;
  width: 80px;
  height: 40px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  cursor: pointer;
}
.price-knob {
  position: absolute;
  top: 4px;
  left: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.28);
  transform: translateX(4px);
  transition: transform 420ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.price-switch.is-on .price-knob { transform: translateX(44px); }
.price-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: stretch;
}
@media (min-width: 1024px) {
  .price-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
}
.price-col {
  height: 100%;
  animation: priceFadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.price-col:nth-child(1) { animation-delay: 0.3s; }
.price-col:nth-child(2) { animation-delay: 0.4s; }
.price-col:nth-child(3) { animation-delay: 0.5s; }
.price-grid.is-ready .price-col {
  animation: none;
  opacity: 1;
  transform: none;
}
@media (min-width: 1024px) {
  .price-grid.is-ready .price-col.is-featured { transform: translateY(-1rem); }
}
@keyframes priceFadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (min-width: 1024px) {
  .price-col.is-featured {
    z-index: 20;
    animation-name: priceFadeUpLift;
  }
}
@keyframes priceFadeUpLift {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(-1rem); }
}
.price-plan {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 32px;
  border-radius: 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 30px 60px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
@media (min-width: 1024px) {
  .price-plan { padding: 40px; }
}
.price-plan:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.price-plan.is-featured {
  z-index: 20;
  padding-top: 44px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  border-color: rgba(255, 255, 255, 0.2);
  animation: priceFloat 6s ease-in-out infinite;
}
.price-plan.is-featured:hover {
  animation-play-state: paused;
  box-shadow: 0 0 80px rgba(219, 39, 119, 0.3), 0 40px 80px rgba(0, 0, 0, 0.55);
}
@keyframes priceFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.price-badge {
  position: absolute;
  top: -16px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.price-badge span {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(to right, #6366f1, #ec4899);
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.price-plan h3 {
  margin: 0 0 8px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}
.price-plan-desc {
  margin: 0 0 32px;
  min-height: 2.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.6);
}
.price-now {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.price-amt {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  color: #fff;
  font-variant-numeric: tabular-nums;
  transition: opacity 250ms ease, transform 250ms ease;
}
.price-plan.is-featured .price-amt { font-size: 3.75rem; }
.price-list {
  color: rgba(255, 255, 255, 0.4);
  font-size: 1rem;
  text-decoration: line-through;
  margin-bottom: 6px;
}
.price-suffix {
  color: rgba(255, 255, 255, 0.5);
  font-weight: 500;
  margin-bottom: 6px;
}
.price-feats {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.price-feats li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.45;
}
.price-feats li.is-off { color: rgba(255, 255, 255, 0.3); }
.price-check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 1px;
}
.price-check svg { width: 20px; height: 20px; display: block; }
.price-check-std { color: #f472b6; }
.price-check-ent { color: #22d3ee; }
.price-check-off { color: rgba(255, 255, 255, 0.3); }
.price-check-hi {
  width: 22px;
  height: 22px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(236, 72, 153, 0.2);
  color: #f9a8d4;
  box-sizing: border-box;
  display: grid;
  place-items: center;
}
.price-check-hi svg { width: 14px; height: 14px; }
.price-cta {
  display: block;
  width: 100%;
  margin-top: auto;
  padding: 16px 20px;
  border-radius: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-align: center;
  transition: background 280ms ease, border-color 280ms ease, transform 280ms ease, box-shadow 280ms ease;
}
.price-cta-frost {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
}
.price-cta-frost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
}
.price-cta-solid {
  background: #fff;
  color: #0a0514;
  border: 1px solid #fff;
}
.price-cta-solid:hover {
  background: #f8fafc;
  transform: scale(1.02);
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.2);
}
.price-team {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 32px;
  padding: 24px 28px;
  border-radius: 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16);
  animation: priceFadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.55s both;
}
.price-team h4 {
  margin: 0 0 6px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}
.price-team p {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.55);
}
.price-team-go {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 700;
  color: #f9a8d4;
}
.price-sec .buy-note {
  margin-top: 28px;
  text-align: center;
  color: rgba(255, 255, 255, 0.45);
  font-size: 14px;
  animation: priceFadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.6s both;
}
@media (max-width: 720px) {
  .price-sec { padding: 64px 0 72px; }
  .price-amt, .price-plan.is-featured .price-amt { font-size: 2.6rem; }
  .price-team { flex-direction: column; align-items: flex-start; }
}

/* ---- FAQ ---- */
.faq {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 1rem;
  color: #fff;
  background: #000;
  font-family: Inter, var(--font);
}
.faq-inner {
  position: relative;
  z-index: 1;
  width: min(100%, 700px);
}
.faq-head {
  text-align: center;
  margin-bottom: 3rem;
  opacity: 0;
  transform: translateY(30px);
  animation: faqIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.faq-head h2 {
  margin: 0 0 1rem;
  font-family: "Playfair Display", Georgia, serif;
  font-weight: 700;
  font-size: 32px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.25));
}
.faq-head p {
  margin: 0 auto;
  max-width: 500px;
  font-size: 16px;
  line-height: 1.7;
  color: #9ca3af;
}
@media (min-width: 768px) {
  .faq-head h2 { font-size: 42px; }
  .faq-head p { font-size: 18px; }
}
.faq-wrap {
  position: relative;
  width: 100%;
  opacity: 0;
  transform: translateY(30px);
  animation: faqIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}
@keyframes faqIn {
  to { opacity: 1; transform: none; }
}
.faq-glow {
  position: absolute;
  inset: -4px;
  z-index: 0;
  padding: 4px;
  border-radius: 1.45rem;
  pointer-events: none;
  overflow: hidden;
  filter: drop-shadow(0 0 12px rgba(255, 159, 69, 0.55));
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask-composite: exclude;
}
.faq-glow-spin {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 250%;
  height: 250%;
  transform: translate(-50%, -50%);
  background: conic-gradient(
    from 0deg,
    transparent 0 30%,
    rgba(255, 159, 69, 0.65) 70%,
    rgb(255, 138, 31) 100%
  );
  animation: faqSpin 4s linear infinite;
}
@keyframes faqSpin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}
.faq-card {
  position: relative;
  z-index: 10;
  width: 100%;
  overflow: hidden;
  border-radius: 1.25rem;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.02) 100%);
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-top-color: rgba(255, 255, 255, 0.3);
  border-left-color: rgba(255, 255, 255, 0.3);
  box-shadow:
    0 30px 60px -12px rgba(0, 0, 0, 0.8),
    inset 0 0 20px rgba(255, 255, 255, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  opacity: 0;
  transform: translateY(15px);
}
.faq-item.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.faq-item:last-child { border-bottom: 0; }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1.25rem 1.5rem;
  border: 0;
  background: transparent;
  color: #fff;
  font-family: inherit;
  font-size: 16px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}
.faq-q span:first-child { transition: color 0.3s ease; }
.faq-q:hover span:first-child { color: #ffc48a; }
@media (min-width: 768px) {
  .faq-q { font-size: 22px; }
}
.faq-ico {
  position: relative;
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  margin-left: 1rem;
  border-radius: 50%;
  background: #1f1f1f;
  transition: background 0.3s ease;
}
.faq-ico i {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.5px;
  margin: -0.75px 0 0 -5px;
  background: #ff9f45;
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.3s ease;
}
.faq-ico i:last-child { transform: rotate(90deg); }
.faq-item.active .faq-ico { background: #ff8a1f; }
.faq-item.active .faq-ico i { background: #fff; }
.faq-item.active .faq-ico i:first-child { transform: rotate(180deg); }
.faq-item.active .faq-ico i:last-child {
  transform: rotate(180deg);
  opacity: 0;
}
.faq-a {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
}
.faq-a p {
  margin: 0;
  padding: 0 24px 24px;
  font-size: 16px;
  line-height: 1.7;
  color: #9ca3af;
}
@media (prefers-reduced-motion: reduce) {
  .faq-glow-spin { animation: none; }
  .faq-head, .faq-wrap { animation: none; opacity: 1; transform: none; }
  .faq-item { opacity: 1; transform: none; }
}

/* ---- CTA band ---- */
.cta-band { text-align: center; }
.cta-band h2 { font-size: clamp(1.9rem, 4.2vw, 3rem); letter-spacing: -0.035em; }
.cta-band .lead { max-width: 32em; margin: 14px auto 0; color: var(--muted); font-size: clamp(1rem, 2vw, 1.25rem); }
.cta-band .cta-row { margin-top: 28px; }

/* ---- Footer ---- */
.site-foot {
  background: var(--bg);
  border-top: 1px solid var(--hairline);
}
.foot-inner {
  width: min(calc(100% - 64px), 1080px);
  margin: 0 auto;
  padding: 72px 0 96px;
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.8fr 0.9fr 1.15fr;
  gap: 40px 36px;
  align-items: start;
}
.foot-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}
.foot-logo .brand-mark { color: var(--text); }
.foot-wordmark {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-weight: 700;
  font-size: 28px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--text);
}
.foot-addr {
  display: block;
  margin: 22px 0 28px;
  font-style: normal;
  font-size: 13px;
  line-height: 1.7;
  color: #8e8e93;
}
[data-theme="dark"] .foot-addr { color: #8e8e93; }
.foot-lang {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: #fff;
  color: #3a3a3c;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease;
}
.foot-lang:hover { background: #f5f5f7; }
[data-theme="dark"] .foot-lang {
  background: #161618;
  border-color: rgba(255, 255, 255, 0.16);
  color: #e5e5ea;
}
[data-theme="dark"] .foot-lang:hover { background: #222; }
.foot-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  min-width: 0;
}
.foot-col h3 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0;
  color: #6e6e73;
}
[data-theme="dark"] .foot-col h3 { color: #a1a1a6; }
.foot-col a {
  font-size: 14px;
  line-height: 1.4;
  color: #8e8e93;
  transition: color 160ms ease;
}
.foot-col a:hover { color: var(--text); }
@media (max-width: 980px) {
  .foot-inner {
    grid-template-columns: 1fr 1fr;
    padding: 56px 0 72px;
    width: min(calc(100% - 44px), 1080px);
  }
  .foot-brand-col { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .foot-inner { grid-template-columns: 1fr; gap: 32px; }
}

/* ---- Globe ---- */
.globe-wrap {
  margin: 4px auto 40px;
  width: 100%;
  max-width: 720px;
}
#globe {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1.28 / 1;
}

/* ---- Reviews (dual testimonial carousel) ---- */
.trust-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 20px 6px 6px;
  border-radius: 999px;
  background: #0a0a0a;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 20px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
  transition: transform 0.3s ease;
}
.trust-pill:hover { transform: scale(1.05); }
[data-theme="dark"] .trust-pill {
  background: #f5f5f7;
  color: #0a0a0a;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.55);
}
.trust-pill .tp-ico {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #2563eb;
  color: #fff;
  box-shadow: 0 0 10px rgba(37, 99, 235, 0.6);
}

.tm-viewport {
  overflow: hidden;
  padding-bottom: 8px;
  -webkit-mask: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent);
  mask: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent);
}
.tm-row {
  display: flex;
  width: max-content;
  will-change: transform;
}
.tm-row.tm-1 { margin-bottom: 24px; animation: tm-left 40s linear infinite; }
.tm-row.tm-2 { animation: tm-right 40s linear infinite; }
.tm-row:hover { animation-play-state: paused; }
@keyframes tm-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@keyframes tm-right {
  from { transform: translateX(-50%); }
  to { transform: translateX(0); }
}

.tm-cardw { display: flex; padding: 0 12px; }
.tm-card {
  width: 380px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 26px;
  padding: 32px;
  border-radius: 24px;
  background: linear-gradient(145deg, #f8fafc, #f1f5f9);
  border: 1px solid var(--hairline);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.tm-card:hover { transform: translateY(-4px); box-shadow: 0 18px 44px rgba(0, 0, 0, 0.12); }
[data-theme="dark"] .tm-card {
  background: linear-gradient(145deg, #17171a, #0e0e11);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}
[data-theme="dark"] .tm-card:hover { box-shadow: 0 18px 44px rgba(0, 0, 0, 0.6); }
.tm-top { display: flex; flex-direction: column; }
.tm-quote {
  width: 38px;
  height: 38px;
  color: var(--accent-strong);
  opacity: 0.9;
  margin-bottom: 14px;
  flex-shrink: 0;
}
.tm-text {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
  letter-spacing: -0.01em;
}
.tm-user { display: flex; align-items: center; gap: 14px; }
.tm-avatar {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  overflow: hidden;
  border: 2px solid #fff;
  background: linear-gradient(140deg, var(--accent), var(--accent-strong));
  box-shadow: 0 4px 12px color-mix(in srgb, var(--accent) 32%, transparent);
}
[data-theme="dark"] .tm-avatar { border-color: color-mix(in srgb, #fff 22%, transparent); }
.tm-avatar-txt {
  font-weight: 700;
  font-size: 17px;
  color: #fff;
  line-height: 1;
}
.tm-avatar img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}
.tm-meta { display: flex; flex-direction: column; line-height: 1.35; }
.tm-meta strong { font-size: 15px; font-weight: 700; color: var(--text); }
.tm-meta em { font-style: normal; font-size: 13px; color: var(--muted); font-weight: 500; }

@media (max-width: 640px) {
  .tm-card { width: 320px; padding: 26px; gap: 22px; }
}

/* ---- Scroll reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 700ms cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: none;
  will-change: auto;
}

/* ---- Mobile ---- */
.mobile-nav {
  display: none;
  position: absolute;
  left: 16px;
  right: 16px;
  top: 72px;
  z-index: 45;
  padding: 12px;
  border-radius: 24px;
  background: rgba(12, 10, 24, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.45);
}
.mobile-nav a {
  display: block;
  padding: 12px 16px;
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 16px;
  font-weight: 500;
}
.mobile-nav a:hover { background: rgba(244, 186, 59, 0.16); color: #F4BA3B; }

@media (max-width: 767px) {
  .top-inner { grid-template-columns: 1fr auto; }
  .mobile-nav.is-open { display: block; }
}

@media (max-width: 900px) {
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero { padding: 56px 0 24px; }

  .why-scroll { grid-template-columns: 1fr; gap: 4px; }
  .why-visual { top: 64px; height: 30vh; z-index: 1; }
  .why-art-inner {
    width: min(210px, 52vw);
    border-radius: 26px;
    box-shadow: 0 14px 36px color-mix(in srgb, var(--accent) 14%, transparent);
  }
  .why-step { min-height: 56vh; }
}

@media (max-width: 560px) {
  .hero h1 { font-size: 2.1rem; letter-spacing: -0.03em; line-height: 1.12; }
  .hero .lead { font-size: 1.02rem; }
  .kicker { font-size: 16px; }
  .section-head h2 { font-size: 1.75rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transition: opacity 300ms ease; transform: none; }
  .price-sec,
  .price-blob,
  .price-plan.is-featured,
  .price-col,
  .price-head,
  .price-toggle,
  .price-team,
  .price-sec .buy-note { animation: none !important; }
  .price-col, .price-head, .price-toggle, .price-team, .price-sec .buy-note {
    opacity: 1;
    transform: none;
  }
  .price-plan:hover, .price-cta-solid:hover, .hero-discover:hover { transform: none; }
  .brand-pulse { animation: none; }
  .btn:active, .tab:active, .icon-btn:active { transform: none; }
  .tm-row { animation: none; }
  .tm-viewport { overflow-x: auto; }
  .trust-pill:hover, .tm-card:hover { transform: none; }
  .feat-ico { animation: none; }
  .why-art-inner::before,
  .why-art .art *, .why-art.is-on .art { animation: none !important; }
  .why-art .tick, .why-art .check, .why-art .line { stroke-dashoffset: 0; }
  .why-art .area { opacity: 1; }
  .why-art .redact { transform: scaleX(1); }
  .why-art .pkt, .why-art .tpkt, .why-art .sig, .why-art .sweep, .why-art .shine { opacity: 0; }
  .why-img { animation: none !important; }
  .why-step { min-height: 0; opacity: 1; transform: none; padding: 22px 0; }
}

@media (prefers-reduced-transparency: reduce) {
  .top { background: #050508; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .top-glass { background: #12101c; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .price-plan, .price-team, .price-switch, .price-cta-frost {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(18, 10, 32, 0.92);
  }
}