:root {
  --ink: #f4fbff;
  --muted: #a5c0cc;
  --dim: #6e8a98;
  --deep: #06111c;
  --deep-2: #0b2030;

  --glass: rgba(18, 48, 64, .58);
  --glass-light: rgba(210, 239, 244, .12);
  --stroke: rgba(187, 236, 242, .18);

  --cyan: #4de1e3;
  --green: #83e4b0;
  --coral: #ff9e87;
  --amber: #ffd486;

  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(
      circle at 50% -10%,
      rgba(42, 143, 165, .12),
      transparent 38%
    ),
    var(--deep);

  font-family:
    "Microsoft YaHei UI",
    "PingFang SC",
    "Segoe UI",
    sans-serif;

  line-height: 1.65;
  overflow-x: hidden;

  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;

  opacity: .14;

  background-image:
    linear-gradient(
      rgba(255,255,255,.04) 1px,
      transparent 1px
    ),
    linear-gradient(
      90deg,
      rgba(255,255,255,.035) 1px,
      transparent 1px
    );

  background-size: 46px 46px;

  mask-image:
    linear-gradient(
      to bottom,
      black,
      transparent 72%
    );

  -webkit-mask-image:
    linear-gradient(
      to bottom,
      black,
      transparent 72%
    );

  z-index: -2;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

.page-width {
  width: min(
    var(--max),
    calc(100% - 48px)
  );

  margin-inline: auto;
}

/* =========================
   环境光
========================= */

.ambient {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(2px);
  opacity: .28;
  z-index: -1;
}

.ambient-a {
  width: 520px;
  height: 520px;
  left: -260px;
  top: 22vh;

  background:
    radial-gradient(
      circle,
      rgba(49, 202, 210, .34),
      transparent 68%
    );
}

.ambient-b {
  width: 480px;
  height: 480px;
  right: -230px;
  top: 7vh;

  background:
    radial-gradient(
      circle,
      rgba(151, 100, 220, .24),
      transparent 70%
    );
}

.ambient-c {
  width: 500px;
  height: 500px;
  right: 20%;
  bottom: -320px;

  background:
    radial-gradient(
      circle,
      rgba(81, 204, 151, .18),
      transparent 70%
    );
}

/* =========================
   HEADER
========================= */

.site-header {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;

  height: 82px;

  z-index: 10;

  display: flex;
  align-items: center;
  justify-content: space-between;

  gap: 24px;

  width: min(
    1280px,
    calc(100% - 56px)
  );

  margin: auto;
}

.brand,
.footer-brand {
  display: inline-flex;
  gap: 11px;
  align-items: center;
}

.brand-mark {
  width: 38px;
  height: 38px;

  display: grid;
  place-items: center;

  border:
    1px solid rgba(
      210,
      255,
      255,
      .35
    );

  border-radius: 11px;

  background:
    rgba(
      224,
      251,
      255,
      .14
    );

  box-shadow:
    inset 0 1px 0
      rgba(255,255,255,.32),
    0 12px 28px
      rgba(0,0,0,.16);
}

.brand-mark img {
  width: 25px;
  height: 25px;
}

.brand strong,
.footer-brand strong {
  display: block;
  font-size: 14px;
}

.brand small,
.footer-brand small {
  display: block;
  color: var(--muted);
  font-size: 10px;
}

.main-nav {
  display: flex;
  gap: 25px;

  color: #c2d8df;

  font-size: 12px;
}

.main-nav a {
  transition:
    color .2s ease;
}

.main-nav a:hover {
  color: var(--cyan);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 9px;

  padding: 9px 14px;

  border:
    1px solid rgba(
      179,
      247,
      240,
      .36
    );

  border-radius: 7px;

  background:
    rgba(
      100,
      226,
      213,
      .13
    );

  color: #eafffb;

  font-size: 12px;

  box-shadow:
    inset 0 1px 0
      rgba(255,255,255,.22);
}

/* =========================
   HERO
========================= */

.hero {
  min-height: 760px;

  position: relative;

  display: grid;
  align-items: center;

  overflow: hidden;

  isolation: isolate;
}

.hero-image {
  position: absolute;
  inset: 0;

  background-image:
    url("app-preview.png");

  background-size: cover;
  background-position: 60% center;

  filter:
    saturate(.9)
    contrast(1.02);

  z-index: -3;

  transform: scale(1.04);
}

.hero-shade {
  position: absolute;
  inset: 0;

  z-index: -2;

  background:
    linear-gradient(
      90deg,
      rgba(3,13,22,.97) 0%,
      rgba(4,19,30,.87) 34%,
      rgba(4,20,31,.48) 68%,
      rgba(4,16,27,.66) 100%
    ),

    linear-gradient(
      0deg,
      rgba(3,13,22,.84) 0%,
      transparent 46%,
      rgba(4,15,24,.68) 100%
    );
}

.hero-grid {
  position: absolute;
  inset: 0;

  z-index: -1;

  opacity: .42;

  background:
    linear-gradient(
      90deg,
      transparent 0 17%,
      rgba(74,225,227,.2) 17.1%,
      transparent 17.2% 68%,
      rgba(255,255,255,.12) 68.1%,
      transparent 68.2%
    ),

    linear-gradient(
      0deg,
      transparent 0 70%,
      rgba(255,255,255,.12) 70.1%,
      transparent 70.2%
    );

  mask-image:
    linear-gradient(
      to right,
      black 0 65%,
      transparent 90%
    );

  -webkit-mask-image:
    linear-gradient(
      to right,
      black 0 65%,
      transparent 90%
    );
}

.hero-content {
  padding-top: 74px;
  position: relative;
}

.eyebrow,
.section-kicker {
  text-transform: uppercase;
  letter-spacing: .14em;

  color: var(--cyan);

  font-size: 10px;
  font-weight: 700;
}

.eyebrow {
  display: inline-flex;

  gap: 9px;
  align-items: center;

  padding: 7px 11px;

  border:
    1px solid rgba(
      94,
      231,
      224,
      .26
    );

  border-radius: 999px;

  background:
    rgba(
      43,
      161,
      166,
      .12
    );
}

.pulse-dot {
  width: 7px;
  height: 7px;

  border-radius: 50%;

  background:
    var(--green);

  box-shadow:
    0 0 0 5px
      rgba(131,228,176,.12),
    0 0 17px
      rgba(131,228,176,.8);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 700px;

  margin:
    25px 0 18px;

  font-size:
    clamp(44px, 6vw, 82px);

  line-height: 1.05;

  font-weight: 700;
}

h1 em,
h2 em {
  font-style: normal;
  color: var(--cyan);
}

.hero-lede {
  max-width: 580px;

  color: #c1d5dc;

  font-size: 16px;

  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;

  gap: 12px;

  margin-top: 28px;
}

.button {
  display: inline-flex;

  align-items: center;
  justify-content: center;

  gap: 12px;

  min-height: 43px;

  padding: 10px 18px;

  border-radius: 7px;

  font-size: 12px;
  font-weight: 700;

  transition:
    transform .2s ease,
    box-shadow .2s ease,
    background .2s ease;
}

.button:hover {
  transform:
    translateY(-2px);
}

.button-primary {
  color: #04212b;

  background:
    linear-gradient(
      135deg,
      #8df3e2,
      #56d9e3 54%,
      #7eb9ff
    );

  box-shadow:
    0 13px 30px
      rgba(64,208,210,.26),
    inset 0 1px 0
      rgba(255,255,255,.7);
}

.button-ghost {
  color: #e2f6f7;

  border:
    1px solid
    rgba(190,240,242,.3);

  background:
    rgba(178,230,238,.08);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;

  gap: 31px;

  margin-top: 63px;
}

.hero-proof span {
  display: grid;
  gap: 0;

  border-left:
    1px solid
    rgba(174,236,235,.3);

  padding-left: 13px;
}

.hero-proof b {
  font-size: 19px;
}

.hero-proof small {
  color: var(--muted);
  font-size: 10px;
}

.hero-scroll {
  position: absolute;

  left: 50%;
  bottom: 23px;

  transform:
    translateX(-50%);

  color:
    rgba(214,239,244,.7);

  font-size: 10px;

  letter-spacing: .12em;

  display: flex;

  align-items: center;
  gap: 9px;
}

.hero-scroll span {
  width: 1px;
  height: 27px;

  background:
    linear-gradient(
      var(--cyan),
      transparent
    );
}

/* =========================
   SIGNAL
========================= */

.signal-strip {
  display: grid;

  grid-template-columns:
    1fr 1.23fr;

  gap: 75px;

  padding:
    115px 0 112px;
}

h2 {
  margin:
    13px 0 15px;

  font-size:
    clamp(31px,4vw,52px);

  line-height: 1.15;
}

.signal-intro p,
.section-heading > p,
.product-copy > p,
.contact-copy > p {
  max-width: 460px;

  color: var(--muted);

  font-size: 14px;

  line-height: 1.9;
}

.signal-list {
  display: grid;
  gap: 11px;
}

.signal-item {
  display: grid;

  grid-template-columns:
    44px 1fr;

  gap: 17px;

  padding: 22px;

  border:
    1px solid var(--stroke);

  border-radius: 8px;

  background:
    linear-gradient(
      135deg,
      rgba(255,255,255,.1),
      rgba(118,221,226,.04)
    );

  box-shadow:
    inset 0 1px 0
      rgba(255,255,255,.1);
}

.signal-icon {
  width: 38px;
  height: 38px;

  display: grid;
  place-items: center;

  border-radius: 50%;

  font-size: 10px;
  font-weight: 800;
}

.icon-cyan {
  color: var(--cyan);

  border:
    1px solid
    rgba(77,225,227,.4);

  background:
    rgba(77,225,227,.1);
}

.icon-green {
  color: var(--green);

  border:
    1px solid
    rgba(131,228,176,.4);

  background:
    rgba(131,228,176,.1);
}

.icon-coral {
  color: var(--coral);

  border:
    1px solid
    rgba(255,158,135,.4);

  background:
    rgba(255,158,135,.1);
}

.signal-item strong {
  font-size: 16px;
}

.signal-item p {
  margin: 4px 0 0;

  color: var(--muted);

  font-size: 12px;

  line-height: 1.75;
}

/* =========================
   SHOWCASE
========================= */

.showcase {
  padding:
    70px 0 118px;
}

.section-heading {
  display: flex;

  align-items: end;
  justify-content: space-between;

  gap: 40px;

  margin-bottom: 42px;
}

.section-heading > p {
  margin-bottom: 7px;
  max-width: 305px;
}

.showcase-grid {
  display: grid;

  grid-template-columns:
    repeat(12,1fr);

  gap: 12px;
}

.feature-card {
  position: relative;

  overflow: hidden;

  min-height: 288px;

  padding: 25px;

  border:
    1px solid var(--stroke);

  border-radius: 8px;

  background:
    linear-gradient(
      140deg,
      rgba(255,255,255,.12),
      rgba(255,255,255,.045) 55%,
      rgba(14,46,63,.42)
    );

  box-shadow:
    inset 0 1px 0
      rgba(255,255,255,.16),
    0 18px 44px
      rgba(0,0,0,.13);
}

.feature-card::after {
  content: "";

  position: absolute;

  width: 210px;
  height: 210px;

  right: -85px;
  top: -90px;

  border-radius: 50%;

  background:
    radial-gradient(
      circle,
      rgba(77,225,227,.2),
      transparent 70%
    );

  pointer-events: none;
}

.feature-tall {
  grid-column: span 5;
  min-height: 388px;
}

.feature-green {
  grid-column: span 7;
}

.feature-coral {
  grid-column: span 4;
}

.feature-wide {
  grid-column: span 8;

  display: flex;

  justify-content: space-between;

  gap: 25px;

  align-items: center;

  min-height: 255px;
}

.feature-green::after {
  background:
    radial-gradient(
      circle,
      rgba(131,228,176,.22),
      transparent 70%
    );
}

.feature-coral::after {
  background:
    radial-gradient(
      circle,
      rgba(255,158,135,.2),
      transparent 70%
    );
}

.feature-top {
  display: flex;

  align-items: center;
  justify-content: space-between;

  gap: 14px;

  color: var(--dim);
}

.feature-number {
  font-size: 10px;

  color: var(--cyan);

  font-weight: 800;
}

.feature-tag {
  padding: 4px 8px;

  border:
    1px solid
    rgba(184,231,235,.17);

  border-radius: 999px;

  color: var(--muted);

  font-size: 9px;
}

.feature-card h3 {
  margin:
    31px 0 12px;

  font-size: 22px;

  line-height: 1.3;
}

.feature-card p {
  max-width: 450px;

  color: var(--muted);

  font-size: 12px;

  line-height: 1.8;
}

.mini-form {
  display: grid;

  grid-template-columns:
    58px 79px 1fr;

  align-items: center;

  gap: 7px;

  margin-top: 11px;

  padding: 9px 10px;

  border:
    1px solid
    rgba(168,233,235,.14);

  border-radius: 6px;

  background:
    rgba(189,236,240,.08);

  font-size: 10px;
}

.mini-form span {
  color: var(--dim);
}

.mini-form b {
  color: var(--cyan);
}

.mini-form i {
  color: #d1e7e9;

  font-style: normal;

  white-space: nowrap;

  overflow: hidden;

  text-overflow: ellipsis;
}

.data-pill-row {
  display: flex;

  gap: 8px;

  margin-top: 28px;
}

.data-pill-row span {
  padding: 8px 12px;

  border:
    1px solid
    rgba(131,228,176,.22);

  border-radius: 5px;

  color: #d8f7e5;

  background:
    rgba(131,228,176,.08);

  font-size: 10px;
}

.data-bars {
  display: grid;

  gap: 8px;

  margin-top: 18px;

  width: 90%;
}

.data-bars i {
  display: block;

  height: 7px;

  border-radius: 99px;

  background:
    linear-gradient(
      90deg,
      var(--green),
      rgba(131,228,176,.17)
    );
}

.metric-cluster {
  display: grid;

  gap: 2px;

  margin-top: 24px;

  padding: 14px;

  border-left:
    2px solid
    var(--coral);

  background:
    rgba(255,158,135,.07);
}

.metric-cluster b {
  color: var(--muted);
  font-size: 11px;
}

.metric-cluster strong {
  font-size: 24px;
  color: #ffe4dc;
}

.metric-cluster span {
  color: var(--coral);
  font-size: 10px;
}

.feature-wide-copy {
  max-width: 51%;
}

.candidate-stack {
  width: min(44%,380px);

  display: grid;

  gap: 7px;

  transform:
    perspective(800px)
    rotateY(-9deg)
    rotateX(3deg);
}

.candidate-stack div {
  display: grid;

  grid-template-columns:
    58px 1fr 48px;

  gap: 8px;

  align-items: center;

  padding: 11px 12px;

  border:
    1px solid
    rgba(77,225,227,.2);

  border-radius: 5px;

  background:
    rgba(174,235,241,.1);

  box-shadow:
    7px 9px 0
    rgba(6,17,28,.16);

  font-size: 10px;
}

.candidate-stack b {
  color: var(--cyan);
}

.candidate-stack span {
  color: #d7e9ec;

  overflow: hidden;

  text-overflow: ellipsis;

  white-space: nowrap;
}

.candidate-stack em {
  color: var(--amber);

  font-style: normal;

  text-align: right;
}

/* =========================
   PRODUCT
========================= */

.product-view {
  display: grid;

  grid-template-columns:
    .8fr 1.2fr;

  gap: 67px;

  align-items: center;

  padding:
    92px 0 135px;
}

.product-copy h2 {
  margin-top: 14px;
}

.check-list {
  display: grid;

  gap: 10px;

  margin: 28px 0;
}

.check-list span {
  color: #cde1e5;

  font-size: 12px;
}

.check-list i {
  display: inline-grid;

  place-items: center;

  width: 20px;
  height: 20px;

  margin-right: 7px;

  border-radius: 50%;

  color: var(--green);

  border:
    1px solid
    rgba(131,228,176,.3);

  background:
    rgba(131,228,176,.1);

  font-size: 11px;

  font-style: normal;
}

.text-link {
  color: var(--cyan);

  font-size: 12px;

  border-bottom:
    1px solid
    rgba(77,225,227,.3);

  padding-bottom: 5px;
}

.app-frame {
  position: relative;

  overflow: hidden;

  border:
    1px solid
    rgba(200,245,245,.27);

  border-radius: 10px;

  background:
    rgba(9,31,44,.84);

  box-shadow:
    25px 30px 0
      rgba(1,9,15,.23),
    0 28px 70px
      rgba(0,0,0,.26),
    inset 0 1px 0
      rgba(255,255,255,.26);

  transform:
    perspective(1300px)
    rotateY(-6deg)
    rotateX(3deg);

  transition:
    transform .5s ease;
}

.app-frame:hover {
  transform:
    perspective(1300px)
    rotateY(-1deg)
    rotateX(0deg)
    translateY(-5px);
}

.frame-top {
  display: grid;

  grid-template-columns:
    75px 1fr 85px;

  align-items: center;

  padding: 10px 13px;

  border-bottom:
    1px solid
    rgba(182,235,238,.16);

  color: var(--muted);

  font-size: 9px;
}

.window-dots {
  display: flex;
  gap: 5px;
}

.window-dots i {
  width: 7px;
  height: 7px;

  border-radius: 50%;

  background: #ff927e;
}

.window-dots i:nth-child(2) {
  background: #ffd478;
}

.window-dots i:nth-child(3) {
  background: #7ee5b0;
}

.frame-status {
  color: var(--green);

  font-size: 8px;

  text-align: right;
}

.frame-screen {
  padding: 8px;

  background: #071b29;
}

.frame-screen img {
  display: block;

  width: 100%;
  height: auto;

  border-radius: 4px;

  opacity: .95;
}

.frame-reflection {
  position: absolute;
  inset: 0;

  pointer-events: none;

  background:
    linear-gradient(
      126deg,
      rgba(255,255,255,.14),
      transparent 27%,
      transparent 73%,
      rgba(77,225,227,.07)
    );

  mix-blend-mode: screen;
}

/* =========================
   WORKFLOW
========================= */

.workflow-band {
  padding:
    82px 0 121px;

  border-top:
    1px solid
    rgba(176,229,231,.1);
}

.section-heading.compact {
  margin-bottom: 31px;
}

.steps {
  display: grid;

  grid-template-columns:
    repeat(3,1fr);

  gap: 11px;
}

.steps article {
  display: grid;

  grid-template-columns:
    40px 1fr;

  gap: 15px;

  min-height: 150px;

  padding: 21px;

  border:
    1px solid var(--stroke);

  border-radius: 8px;

  background:
    rgba(210,244,246,.07);
}

.steps article > span {
  color: var(--cyan);

  font-weight: 800;

  font-size: 11px;
}

.steps h3 {
  margin:
    0 0 7px;

  font-size: 16px;
}

.steps p {
  margin: 0;

  color: var(--muted);

  font-size: 13px;

  line-height: 1.85;
}

/* =========================
   STABILITY
========================= */

.stability {
  padding:
    72px 0 125px;
}

.stability-grid {
  display: grid;

  grid-template-columns:
    repeat(3,1fr);

  gap: 11px;
}

.stability-card {
  padding: 25px;

  border:
    1px solid var(--stroke);

  border-radius: 8px;

  background:
    linear-gradient(
      145deg,
      rgba(255,255,255,.1),
      rgba(255,255,255,.035)
    );
}

.line-icon {
  display: inline-grid;

  place-items: center;

  width: 34px;
  height: 34px;

  margin-bottom: 23px;

  border:
    1px solid
    rgba(77,225,227,.3);

  border-radius: 8px;

  color: var(--cyan);

  font-size: 17px;

  background:
    rgba(77,225,227,.09);
}

.stability-card h3 {
  margin-bottom: 8px;

  font-size: 17px;
}

.stability-card p {
  min-height: 84px;

  color: var(--muted);

  font-size: 14px;

  line-height: 1.85;
}

.stability-card small {
  color: var(--dim);

  font-size: 12px;
}

/* =========================
   AUDIENCE
========================= */

.audience {
  display: grid;

  grid-template-columns:
    1fr 1fr;

  gap: 13px;

  padding-bottom: 125px;
}

.audience-panel,
.audience-answer {
  min-height: 245px;

  padding: 31px;

  border:
    1px solid var(--stroke);

  border-radius: 8px;

  background:
    rgba(191,235,238,.08);
}

.audience-panel h2 {
  font-size: 34px;
}

.audience-tags {
  display: flex;

  flex-wrap: wrap;

  gap: 8px;

  margin-top: 28px;
.audience-answer,
}

.audience-tags span {
  padding: 7px 11px;

  border:
    1px solid
    rgba(188,233,236,.2);

  border-radius: 999px;

  color: #d9eef0;

  font-size: 10px;

  background:
    rgba(255,255,255,.06);
}

.audience-answer {
  display: grid;

  align-content: center;

  background:
    linear-gradient(
      135deg,
      rgba(255,174,147,.13),
      rgba(77,225,227,.08)
    );
}

.audience-answer p {
  margin:
    0 0 20px;

  color: #ffe3db;

  font-size: 18px;

  line-height: 1.9;
}

.audience-answer strong {
  color: var(--cyan);

  font-size: 14px;
}

/* =========================
   CONTACT
========================= */

.contact {
  position: relative;

  display: grid;

  grid-template-columns:
    1fr .85fr;

  gap: 70px;

  overflow: hidden;

  margin-bottom: 40px;

  padding: 58px 65px;

  border:
    1px solid
    rgba(186,241,239,.3);

  border-radius: 10px;

  background:
    linear-gradient(
      125deg,
      rgba(75,219,212,.16),
      rgba(151,101,220,.14) 56%,
      rgba(255,157,135,.1)
    );

  box-shadow:
    inset 0 1px 0
      rgba(255,255,255,.28),
    0 26px 60px
      rgba(0,0,0,.2);
}

.contact-glow {
  position: absolute;

  width: 370px;
  height: 370px;

  left: -180px;
  bottom: -270px;

  border-radius: 50%;

  background:
    radial-gradient(
      circle,
      rgba(77,225,227,.38),
      transparent 70%
    );

  pointer-events: none;
}

.contact h2 {
  font-size: 46px;
}

.contact-points {
  display: flex;

  flex-wrap: wrap;

  gap: 8px;

  margin-top: 26px;
}

.contact-points span {
  padding: 7px 11px;

  border:
    1px solid
    rgba(188,233,236,.2);

  border-radius: 999px;

  color: #d9eef0;

  font-size: 10px;

  background:
    rgba(255,255,255,.06);
}

/* =========================
   微信二维码
========================= */

.wechat-card {
  display: flex;

  align-items: center;
  justify-content: center;

  gap: 23px;

  padding: 22px;

  border:
    1px solid
    rgba(219,249,247,.28);

  border-radius: 8px;

  background:
    rgba(4,25,35,.34);

  box-shadow:
    inset 0 1px 0
      rgba(255,255,255,.16),
    13px 16px 0
      rgba(3,15,22,.13);
}

.wechat-frame {
  width: 146px;
  height: 146px;

  flex:
    0 0 auto;

  padding: 7px;

  border-radius: 9px;

  background:
    rgba(250,255,255,.98);

  box-shadow:
    0 12px 28px
      rgba(0,0,0,.24);
}

.wechat-frame img {
  display: block;

  width: 100%;
  height: 100%;

  border-radius: 3px;

  object-fit: cover;
}

.wechat-copy {
  display: grid;

  gap: 7px;

  align-content: center;
}

.wechat-copy strong {
  color: #efffff;

  font-size: 17px;
}

.wechat-copy span {
  color: var(--muted);

  font-size: 11px;

  line-height: 1.7;
}

.wechat-copy small {
  color: var(--cyan);

  font-size: 11px;
}

/* =========================
   FOOTER
========================= */

.site-footer {
  display: flex;

  justify-content: space-between;
  align-items: center;

  gap: 20px;

  padding:
    27px 0 38px;

  color: var(--dim);

  font-size: 10px;
}

.footer-brand img {
  width: 26px;
  height: 26px;
}

.footer-meta {
  display: flex;
  gap: 18px;
}

.back-top {
  display: grid;

  place-items: center;

  width: 29px;
  height: 29px;

  border:
    1px solid
    rgba(186,235,238,.25);

  border-radius: 50%;

  color: var(--cyan);
}

/* =========================
   Toast
========================= */

.toast {
  position: fixed;

  left: 50%;
  bottom: 25px;

  z-index: 20;

  transform:
    translate(-50%,20px);

  opacity: 0;

  pointer-events: none;

  padding:
    12px 17px;

  border:
    1px solid
    rgba(195,245,244,.3);

  border-radius: 7px;

  color: #eaffff;

  background:
    rgba(5,26,37,.9);

  box-shadow:
    0 15px 35px
    rgba(0,0,0,.25);

  font-size: 12px;

  transition:
    opacity .25s ease,
    transform .25s ease;
}

.toast.show {
  opacity: 1;

  transform:
    translate(-50%,0);
}

/* =========================================================
   玻璃重组动画
   不使用 animation-timeline
   微信浏览器也可以工作
========================================================= */

.glass-reveal {
  opacity: 0;

  transform:
    translateY(35px)
    scale(.965)
    rotateX(4deg);

  filter:
    blur(5px);

  transition:
    opacity .65s cubic-bezier(.22,1,.36,1),
    transform .75s cubic-bezier(.22,1,.36,1),
    filter .65s ease;

  will-change:
    opacity,
    transform,
    filter;
}

.glass-reveal.glass-active {
  opacity: 1;

  transform:
    translateY(0)
    scale(1)
    rotateX(0);

  filter:
    blur(0);
}

/* 玻璃边缘闪光 */

.glass-reveal::before {
  content: "";

  position: absolute;

  inset: 0;

  pointer-events: none;

  opacity: 0;

  border-radius: inherit;

  background:
    linear-gradient(
      115deg,
      transparent 15%,
      rgba(255,255,255,.16) 38%,
      rgba(77,225,227,.13) 47%,
      transparent 65%
    );

  transform:
    translateX(-100%);

  transition:
    opacity .2s ease,
    transform .8s cubic-bezier(.22,1,.36,1);
}

.glass-reveal.glass-active::before {
  opacity: 1;

  transform:
    translateX(100%);
}

/* =========================
   桌面端悬浮玻璃
========================= */

.signal-item,
.feature-card,
.steps article,
.stability-card,
.audience-panel,
.contact,
.app-frame {
  transition:
    border-color .35s ease,
    box-shadow .35s ease,
    transform .35s ease,
    background .35s ease;
}

.signal-item:hover,
.feature-card:hover,
.steps article:hover,
.stability-card:hover {
  border-color:
    rgba(135,235,237,.28);

  box-shadow:
    inset 0 1px 0
      rgba(255,255,255,.16),
    0 22px 55px
      rgba(0,0,0,.2);
}

/* =========================================================
   平板
========================================================= */

@media (max-width: 900px) {

  .main-nav {
    display: none;
  }

  .hero {
    min-height: 720px;
  }

  .hero-image {
    background-position:
      66% center;
  }

  .signal-strip,
  .product-view,
  .contact,
  .audience {
    grid-template-columns: 1fr;

    gap: 32px;
  }

  .signal-strip {
    padding-top: 82px;
  }

  .showcase-grid {
    grid-template-columns:
      1fr 1fr;
  }

  .feature-tall,
  .feature-green,
  .feature-coral,
  .feature-wide {
    grid-column: span 1;
  }

  .feature-wide {
    display: block;
  }

  .feature-wide-copy {
    max-width: none;
  }

  .candidate-stack {
    width: 100%;

    margin-top: 25px;

    transform: none;
  }

  .app-frame {
    transform: none;
  }

  .contact {
    padding:
      40px 30px;
  }

  .wechat-card {
    justify-content:
      center;
  }
}

/* =========================================================
   手机
========================================================= */


/* Mobile: one compact rule set with hard paint boundaries */
@media (max-width: 580px) {
  html,
  body {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden !important;
  }

  html { font-size: 14px; }
  body { position: relative; font-size: 13px; line-height: 1.65; }
  .page-width { width: calc(100% - 30px); max-width: calc(100% - 30px); }

  .site-header { width: calc(100% - 30px); height: 62px; }
  .brand { gap: 7px; }
  .brand-mark { width: 31px; height: 31px; border-radius: 8px; }
  .brand-mark img { width: 20px; height: 20px; }
  .brand strong { font-size: 11px; line-height: 1.3; }
  .brand small { font-size: 8px; line-height: 1.3; }
  .header-cta { gap: 5px; padding: 7px 9px; font-size: 9px; white-space: nowrap; }

  .hero { min-height: 610px; }
  .hero-content { padding-top: 48px; }
  .eyebrow { padding: 5px 8px; font-size: 8px; letter-spacing: .08em; }
  .pulse-dot { width: 5px; height: 5px; }
  h1 { max-width: 100%; margin: 18px 0 14px; font-size: 38px; line-height: 1.12; letter-spacing: -1px; }
  .hero-lede { max-width: 100%; font-size: 12px; line-height: 1.8; }
  .hero-actions { gap: 8px; margin-top: 21px; }
  .button { min-height: 37px; padding: 8px 13px; border-radius: 6px; font-size: 10px; gap: 7px; }
  .hero-proof { gap: 14px; margin-top: 38px; }
  .hero-proof span { padding-left: 9px; }
  .hero-proof b { font-size: 14px; }
  .hero-proof small { font-size: 8px; }
  .hero-scroll { bottom: 17px; font-size: 8px; }

  .signal-strip, .showcase, .product-view, .workflow-band, .stability { padding: 58px 0 65px; }
  .section-kicker { font-size: 8px; letter-spacing: .12em; }
  h2 { margin: 9px 0 12px; font-size: 27px; line-height: 1.25; letter-spacing: -.5px; }
  .signal-intro p, .section-heading > p, .product-copy > p, .contact-copy > p { font-size: 11px; line-height: 1.8; }
  .signal-strip { gap: 24px; }
  .section-heading { display: block; margin-bottom: 27px; }
  .section-heading > p { margin-top: 14px; }
  .showcase-grid, .steps, .stability-grid { grid-template-columns: 1fr; gap: 7px; }

  .signal-item { grid-template-columns: 36px minmax(0, 1fr); gap: 12px; padding: 17px; }
  .signal-icon { width: 31px; height: 31px; font-size: 8px; }
  .signal-item strong { font-size: 13px; }
  .signal-item p { margin-top: 3px; font-size: 10px; line-height: 1.7; }

  .feature-tall, .feature-green, .feature-coral, .feature-wide { grid-column: span 1; }
  .feature-card { min-height: 0; padding: 19px; }
  .feature-wide { display: block; min-height: 0; }
  .feature-wide-copy { width: 100%; max-width: none; }
  .feature-top, .feature-number { font-size: 8px; }
  .feature-tag { padding: 3px 6px; font-size: 8px; }
  .feature-card h3 { margin: 19px 0 9px; font-size: 17px; line-height: 1.35; }
  .feature-card p { font-size: 10px; line-height: 1.75; }
  .mini-form { grid-template-columns: 52px 62px minmax(0, 1fr); gap: 5px; margin-top: 8px; padding: 7px 8px; font-size: 8px; }
  .mini-form b { font-size: 9px; }
  .mini-form i { min-width: 0; font-size: 8px; }
  .data-pill-row { gap: 5px; margin-top: 19px; }
  .data-pill-row span { padding: 6px 8px; font-size: 8px; }
  .data-bars { gap: 6px; width: 100%; margin-top: 13px; }
  .data-bars i { height: 5px; }
  .metric-cluster { margin-top: 16px; padding: 11px; }
  .metric-cluster b { font-size: 9px; }
  .metric-cluster strong { font-size: 19px; }
  .metric-cluster span { font-size: 8px; }
  .candidate-stack { width: 100%; max-width: 100%; gap: 5px; margin-top: 20px; transform: none !important; }
  .candidate-stack div { grid-template-columns: 48px minmax(0, 1fr) 42px; gap: 5px; width: 100%; min-width: 0; padding: 8px 9px; font-size: 8px; }
  .candidate-stack span { min-width: 0; }

  .product-view { grid-template-columns: 1fr; gap: 25px; }
  .product-copy h2 { margin-top: 9px; }
  .check-list { gap: 7px; margin: 20px 0; }
  .check-list span { font-size: 10px; }
  .check-list i { width: 17px; height: 17px; margin-right: 5px; font-size: 9px; }
  .text-link { font-size: 10px; }
  .app-frame { width: 100%; transform: none !important; perspective: none !important; border-radius: 8px; box-shadow: 12px 15px 0 rgba(1,9,15,.18), 0 20px 45px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.2); }
  .frame-top { grid-template-columns: 55px 1fr 55px; padding: 8px 9px; font-size: 7px; }
  .window-dots { gap: 3px; }
  .window-dots i { width: 5px; height: 5px; }
  .frame-status { font-size: 6px; }
  .frame-screen { padding: 5px; }
  .frame-reflection { display: none; }

  .steps article { grid-template-columns: 30px 1fr; gap: 10px; min-height: 0; padding: 15px; }
  .steps article > span { font-size: 9px; }
  .steps h3 { margin-bottom: 5px; font-size: 13px; }
  .steps p { font-size: 10px; line-height: 1.75; }
  .stability-card { padding: 18px; }
  .line-icon { width: 29px; height: 29px; margin-bottom: 16px; font-size: 14px; }
  .stability-card h3 { margin-bottom: 6px; font-size: 14px; }
  .stability-card p { min-height: 0; margin-bottom: 10px; font-size: 10px; line-height: 1.75; }
  .stability-card small { font-size: 8px; }

  .audience { grid-template-columns: 1fr; gap: 8px; padding-bottom: 65px; }
  .audience-panel, .audience-answer { min-height: 0; padding: 20px; border-radius: 7px; }
  .audience-panel h2 { font-size: 25px; }
  .audience-tags { gap: 5px; margin-top: 18px; }
  .audience-tags span { padding: 5px 8px; font-size: 8px; }
  .audience-answer { padding-top: 25px; padding-bottom: 25px; }
  .audience-answer p { margin-bottom: 14px; font-size: 14px; line-height: 1.8; }
  .audience-answer strong { font-size: 11px; }

  .contact { grid-template-columns: 1fr; gap: 22px; margin-bottom: 20px; padding: 28px 18px; border-radius: 8px; }
  .contact h2 { font-size: 29px; line-height: 1.2; }
  .contact-points { gap: 5px; margin-top: 18px; }
  .contact-points span { padding: 5px 8px; font-size: 8px; }
  .contact-glow { display: none; }
  .wechat-card { width: 100% !important; max-width: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 13px; padding: 22px 12px 25px; text-align: center; overflow: hidden !important; }
  .wechat-frame { width: min(72vw, 225px) !important; height: min(72vw, 225px) !important; padding: 7px; margin: 0 auto; flex: 0 0 auto; }
  .wechat-copy { width: 100%; max-width: 100%; justify-items: center; text-align: center; gap: 5px; }
  .wechat-copy strong { font-size: 14px; }
  .wechat-copy span, .wechat-copy small { font-size: 9px; }

  .site-footer { padding: 20px 0 27px; }
  .footer-brand strong { font-size: 10px; }
  .footer-brand small { font-size: 7px; }
  .footer-brand img { width: 22px; height: 22px; }
  .footer-meta { display: none; }
  .back-top { width: 25px; height: 25px; font-size: 11px; }

  /* Every mobile card clips all decoration at its own box. */
  .signal-item, .feature-card, .steps article, .stability-card, .audience-panel, .audience-answer, .contact, .wechat-card, .app-frame {
    position: relative;
    min-width: 0;
    max-width: 100%;
    overflow: hidden !important;
    contain: paint;
    isolation: isolate;
  }
  .feature-card::before, .feature-card::after, .signal-item::before, .signal-item::after, .steps article::before, .steps article::after, .stability-card::before, .stability-card::after, .audience-panel::before, .audience-panel::after, .audience-answer::before, .audience-answer::after, .glass-reveal::before, .glass-reveal::after {
    display: none !important;
    content: none !important;
  }
  .glass-reveal { opacity: 0; transform: translate3d(0, 18px, 0); filter: none; transition: opacity .55s cubic-bezier(.22,1,.36,1), transform .65s cubic-bezier(.22,1,.36,1); will-change: opacity, transform; }
  .glass-reveal.glass-active { opacity: 1; transform: translate3d(0, 0, 0); }
  .feature-card *, .signal-item *, .steps article *, .stability-card *, .audience-panel *, .audience-answer * { max-width: 100%; min-width: 0; }
  .feature-card p, .signal-item p, .steps article p, .stability-card p, .audience-answer p, .contact-copy p { overflow-wrap: anywhere; word-break: break-word; }
  img { max-width: 100%; height: auto; }
}

@media (max-width: 430px) {
  h1 { font-size: 35px; }
  h2 { font-size: 25px; }
  .hero { min-height: 590px; }
  .hero-lede { font-size: 11px; }
  .hero-proof { gap: 11px; }
  .hero-proof b { font-size: 13px; }
  .hero-proof small { font-size: 7px; }
  .feature-card h3 { font-size: 16px; }
  .contact h2 { font-size: 27px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .glass-reveal { opacity: 1; transform: none; transition: none; }
}