:root {
  --bg: #f8fbff;
  --card: rgba(255, 255, 255, 0.86);
  --blue: #2563eb;
  --blue-2: #60a5fa;
  --pale: #eff6ff;
  --ink: #0b1b3a;
  --text: #334155;
  --muted: #64748b;
  --line: #e5edf8;
  --header-line: #e6ecf5;
  --shadow: 0 18px 45px rgba(37, 99, 235, 0.08);
  --btn-shadow: 0 10px 24px rgba(37, 99, 235, 0.25);
  --serif: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --sans: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-width: 320px;
  min-height: 100%;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 15%, rgba(191, 219, 254, 0.48), transparent 28%),
    linear-gradient(180deg, #fbfdff, var(--bg));
  font-family: var(--sans);
}

body {
  overflow-x: hidden;
}

.public-page {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

.public-page::before {
  content: "";
  position: absolute;
  inset: 72px -6% auto -6%;
  height: 650px;
  pointer-events: none;
  opacity: 0.66;
  background:
    radial-gradient(circle at 93% 35%, rgba(255, 255, 255, 0.95) 0 2px, transparent 3px) 0 0 / 28px 28px,
    repeating-radial-gradient(ellipse at 83% 46%, transparent 0 84px, rgba(185, 209, 248, 0.36) 85px 86px),
    repeating-radial-gradient(ellipse at 9% 67%, transparent 0 118px, rgba(207, 222, 249, 0.32) 119px 120px);
}

.site-header {
  height: 72px;
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--header-line);
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(100%, 1760px);
  height: 100%;
  margin: 0 auto;
  padding: 0 64px;
  display: flex;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
  text-decoration: none;
  font-size: 23px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.brand svg {
  width: 44px;
  height: 36px;
  flex: 0 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 58px;
  margin-left: auto;
}

.nav a {
  position: relative;
  height: 72px;
  display: grid;
  place-items: center;
  color: var(--ink);
  text-decoration: none;
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}

.nav a.active {
  color: var(--blue);
}

.nav a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 36px;
  height: 4px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: linear-gradient(90deg, #2f6df2, #63a6ff);
}

.login {
  display: grid;
  place-items: center;
  width: 96px;
  height: 40px;
  margin-left: 58px;
  color: #fff;
  text-decoration: none;
  border-radius: 16px;
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  box-shadow: var(--btn-shadow);
  font-size: 16px;
  font-weight: 800;
}

.auth-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(11, 27, 58, 0.26);
  backdrop-filter: blur(10px);
}

.auth-modal.is-open {
  display: grid;
}

.auth-panel {
  position: relative;
  width: min(100%, 430px);
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 26px 70px rgba(37, 99, 235, 0.18);
}

.auth-close {
  position: absolute;
  top: 14px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  color: var(--muted);
  background: var(--pale);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 5px;
  border-radius: 14px;
  background: #eff6ff;
}

.auth-tabs button,
.auth-submit {
  border: 0;
  font: inherit;
  cursor: pointer;
}

.auth-tabs button {
  height: 40px;
  border-radius: 11px;
  color: var(--blue);
  background: transparent;
  font-weight: 800;
}

.auth-tabs button.is-active {
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #60a5fa);
  box-shadow: 0 10px 22px rgba(37, 99, 235, 0.18);
}

.auth-form {
  display: none;
  padding-top: 22px;
}

.auth-form.is-active {
  display: block;
}

.auth-form h2 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 25px;
  font-weight: 900;
}

.auth-form p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.auth-form label {
  display: grid;
  gap: 7px;
  margin: 0 0 14px;
  color: var(--text);
  font-size: 14px;
  font-weight: 800;
}

.auth-form input {
  width: 100%;
  height: 44px;
  padding: 0 13px;
  border: 1px solid #dce8f8;
  border-radius: 12px;
  color: var(--ink);
  background: #fff;
  font: inherit;
  outline: none;
}

.auth-form input:focus {
  border-color: #60a5fa;
  box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.16);
}

.auth-error {
  min-height: 20px;
  display: block;
  margin: 4px 0 10px;
  color: #dc2626;
  font-size: 13px;
}

.auth-submit {
  width: 100%;
  height: 46px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  box-shadow: var(--btn-shadow);
  font-weight: 900;
}

.page-inner {
  position: relative;
  z-index: 1;
  width: min(100%, 1760px);
  margin: 0 auto;
  padding: 66px 64px 0;
}

.hero {
  display: grid;
  grid-template-columns: 55% 45%;
  align-items: center;
  min-height: 336px;
}

.home .hero {
  grid-template-columns: 50% 50%;
  min-height: 436px;
}

.hero-copy {
  padding-left: 78px;
}

.home .hero-copy {
  padding-left: 128px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 28px;
  margin: 0 0 32px;
  padding: 0 12px;
  color: var(--blue);
  border: 1px solid #d8e7ff;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.06);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.star {
  width: 14px;
  height: 14px;
  position: relative;
  display: inline-block;
  flex: 0 0 auto;
}

.star::before,
.star::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 14px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, #60a5fa, #3b82f6);
}

.star::after {
  transform: rotate(90deg);
}

h1 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 64px;
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-shadow: 0 9px 26px rgba(11, 27, 58, 0.06);
}

.home h1 {
  font-size: 80px;
}

.title-line {
  width: 52px;
  height: 4px;
  margin: 30px 0 26px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), #7dd3fc);
}

.lead {
  max-width: 680px;
  margin: 0;
  color: var(--text);
  font-size: 17px;
  line-height: 1.86;
  letter-spacing: 0.04em;
}

.home .lead {
  font-size: 18px;
  line-height: 1.9;
}

.visual {
  position: relative;
  min-height: 336px;
}

.home .visual {
  min-height: 430px;
}

.halo {
  position: absolute;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(219, 234, 254, 0.42));
  box-shadow: inset 0 1px 12px rgba(255, 255, 255, 0.94), 0 24px 55px rgba(37, 99, 235, 0.08);
}

.halo.one {
  width: 78px;
  height: 78px;
  left: 18px;
  top: 24px;
}

.halo.two {
  width: 98px;
  height: 98px;
  right: 52px;
  top: 32px;
}

.visual-floor {
  position: absolute;
  left: -18px;
  right: 12px;
  bottom: 24px;
  height: 118px;
  border: 1px solid rgba(219, 234, 254, 0.74);
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(147, 197, 253, 0.18), rgba(255, 255, 255, 0) 68%);
}

.glass {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.95);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.8), rgba(239, 246, 255, 0.58));
  box-shadow: 0 22px 58px rgba(37, 99, 235, 0.13), inset 0 1px 1px rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.market-panel {
  width: 420px;
  height: 260px;
  right: 80px;
  top: 26px;
  border-radius: 24px;
  transform: perspective(900px) rotateY(-8deg) rotateX(4deg);
}

.home .market-panel {
  width: 474px;
  height: 286px;
  right: 132px;
  top: 10px;
}

.dots {
  position: absolute;
  top: 34px;
  left: 34px;
  display: flex;
  gap: 9px;
}

.dots i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #93c5fd;
}

.dots i:nth-child(n + 2) {
  opacity: 0.22;
}

.line-svg {
  position: absolute;
  top: 76px;
  left: 34px;
  width: 190px;
  height: 74px;
}

.candles {
  position: absolute;
  left: 180px;
  top: 122px;
  display: flex;
  align-items: end;
  gap: 16px;
}

.candle {
  position: relative;
  width: 17px;
  background: linear-gradient(180deg, rgba(147, 197, 253, 0.42), rgba(81, 120, 242, 0.9));
  box-shadow: 0 9px 20px rgba(37, 99, 235, 0.18);
}

.candle::before {
  content: "";
  position: absolute;
  left: 7px;
  top: -20px;
  width: 2px;
  height: 94px;
  background: rgba(59, 130, 246, 0.5);
}

.candle:nth-child(1) { height: 42px; }
.candle:nth-child(2) { height: 58px; }
.candle:nth-child(3) { height: 74px; }
.candle:nth-child(4) { height: 48px; }

.donut {
  position: absolute;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: conic-gradient(#3b82f6 0 28%, #93c5fd 28% 52%, #fff 52% 70%, #dbeafe 70% 100%);
}

.donut::after {
  content: "";
  position: absolute;
  inset: 17px;
  border-radius: 50%;
  background: #f8fbff;
}

.market-panel .donut {
  right: 52px;
  top: 130px;
}

.panel-lines {
  position: absolute;
  left: 34px;
  right: 38px;
  bottom: 28px;
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 54px;
}

.panel-lines span {
  display: block;
  height: 10px;
  margin-top: 12px;
  border-radius: 999px;
  background: rgba(219, 234, 254, 0.72);
}

.ai-market-card {
  width: 300px;
  height: 160px;
  left: 66px;
  top: 208px;
  border-radius: 20px;
  transform: perspective(850px) rotateY(7deg) rotateX(-3deg);
}

.home .ai-market-card {
  width: 318px;
  height: 180px;
  left: 86px;
  top: 254px;
}

.ai-mark {
  position: absolute;
  left: 28px;
  top: 30px;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #5b86f7;
  background: #dbeafe;
  font-size: 27px;
  font-weight: 900;
}

.mini-chart {
  position: absolute;
  right: 28px;
  bottom: 28px;
  width: 148px;
  height: 78px;
  border: 1px solid #dbeafe;
  border-radius: 13px;
  display: flex;
  align-items: end;
  justify-content: center;
  gap: 9px;
  padding: 14px;
}

.mini-chart i {
  width: 12px;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, #c7d8ff, #6b92f7);
}

.mini-chart i:nth-child(1) { height: 26px; }
.mini-chart i:nth-child(2) { height: 40px; }
.mini-chart i:nth-child(3) { height: 58px; }
.mini-chart i:nth-child(4) { height: 35px; }
.mini-chart i:nth-child(5) { height: 52px; }

.terms-panel {
  width: 250px;
  height: 280px;
  right: 298px;
  top: 4px;
  border-radius: 24px;
  display: grid;
  place-items: center;
}

.terms-panel svg {
  width: 112px;
  height: 112px;
  filter: drop-shadow(0 16px 28px rgba(37, 99, 235, 0.22));
}

.float-icon {
  position: absolute;
  width: 90px;
  height: 90px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.92);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(239, 246, 255, 0.56));
}

.float-icon svg {
  width: 42px;
  height: 42px;
}

.float-icon.scale { left: 90px; top: 86px; }
.float-icon.warn { right: 94px; top: 72px; }
.float-icon.kline { right: 206px; bottom: 46px; }

.content {
  margin-top: 44px;
}

.home .content {
  margin-top: 88px;
}

.terms .content {
  margin-top: 28px;
}

.home-cards,
.terms-cards {
  display: grid;
  gap: 24px;
}

.home-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 0 24px;
}

.terms-cards {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  padding: 0 24px;
}

.feature-card,
.terms-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.feature-card {
  min-height: 170px;
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 32px;
}

.home .feature-card {
  min-height: 210px;
}

.icon-disc {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(180deg, #eef6ff, #f8fbff);
}

.icon-disc svg {
  width: 36px;
  height: 36px;
}

.feature-card h2,
.terms-card h2 {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.feature-card p,
.terms-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.terms-card {
  min-height: 320px;
  padding: 26px 24px;
  display: grid;
  align-content: start;
  justify-items: center;
  text-align: left;
}

.terms-card .icon-disc {
  width: 66px;
  height: 66px;
  margin-bottom: 20px;
}

.terms-card h2 {
  width: 100%;
  text-align: center;
  font-size: 18px;
}

.terms-card p {
  color: var(--text);
  font-size: 14px;
  line-height: 1.82;
}

.risk-note {
  min-height: 76px;
  margin: 18px 24px 18px;
  padding: 14px 38px;
  display: grid;
  grid-template-columns: 58px 1fr;
  align-items: center;
  border-radius: 14px;
  border: 1px solid #f4cf93;
  background: rgba(255, 251, 244, 0.82);
}

.risk-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #ffb14c;
}

.risk-note strong {
  display: block;
  margin-bottom: 3px;
  color: #f59e0b;
  font-size: 18px;
}

.risk-note p {
  margin: 0;
  color: var(--text);
  font-size: 15px;
}

.footer {
  min-height: 62px;
  display: grid;
  place-items: center;
  color: #94a3b8;
  font-size: 13px;
}

.divider {
  height: 1px;
  margin: 32px 0 0;
  background: var(--line);
}

@media (max-width: 1280px) {
  .header-inner,
  .page-inner {
    padding-left: 40px;
    padding-right: 40px;
  }

  .hero-copy {
    padding-left: 28px;
  }

  .home .hero-copy {
    padding-left: 28px;
  }

  h1,
  .home h1 {
    font-size: 56px;
  }

  .feature-card {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 18px;
    padding: 28px 22px;
  }

  .icon-disc {
    width: 58px;
    height: 58px;
  }

  .icon-disc svg {
    width: 30px;
    height: 30px;
  }

  .feature-card p {
    font-size: 13px;
  }

  .terms-card {
    padding: 24px 18px;
  }

  .terms-card p {
    font-size: 12px;
  }
}

@media (max-width: 980px) {
  .nav {
    gap: 30px;
  }

  .login {
    margin-left: 30px;
  }

  .page-inner {
    padding-top: 36px;
  }

  .hero {
    grid-template-columns: 52% 48%;
    min-height: 270px;
  }

  .home .hero {
    min-height: 270px;
  }

  .hero-copy {
    padding-left: 0;
  }

  .home .hero-copy {
    padding-left: 0;
  }

  h1,
  .home h1 {
    font-size: 42px;
    white-space: nowrap;
  }

  .eyebrow {
    height: 24px;
    margin-bottom: 18px;
    font-size: 13px;
  }

  .title-line {
    margin: 18px 0 14px;
  }

  .lead,
  .home .lead {
    font-size: 12.5px;
    line-height: 1.64;
  }

  .visual {
    min-height: 270px;
    transform: scale(0.7) translateX(-82px);
    transform-origin: center right;
  }

  .home .visual {
    min-height: 270px;
  }

  .home-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    padding: 0;
  }

  .terms-cards {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
    padding: 0;
  }

  .feature-card {
    min-height: 116px;
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 10px;
    padding: 16px 14px;
  }

  .home .feature-card {
    min-height: 116px;
  }

  .feature-card h2 {
    font-size: 15px;
    margin-bottom: 5px;
  }

  .feature-card p {
    font-size: 10px;
    line-height: 1.55;
  }

  .terms-card {
    min-height: 226px;
    padding: 18px 12px;
  }

  .terms-card .icon-disc {
    width: 46px;
    height: 46px;
    margin-bottom: 13px;
  }

  .terms-card h2 {
    font-size: 14px;
  }

  .terms-card p {
    font-size: 9px;
    line-height: 1.65;
  }

  .risk-note {
    margin-left: 0;
    margin-right: 0;
    min-height: 62px;
    padding: 10px 24px;
  }

  .risk-note p {
    font-size: 12px;
  }
}

@media (max-width: 640px) {
  .site-header {
    height: auto;
  }

  .header-inner {
    min-height: 72px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 78px;
    gap: 12px;
    padding: 12px 20px;
  }

  .brand {
    min-width: 0;
    font-size: 20px;
  }

  .nav {
    grid-column: 1 / -1;
    width: 100%;
    margin-left: 0;
    justify-content: start;
    gap: 12px;
  }

  .nav a {
    height: 42px;
    font-size: 13px;
  }

  .login {
    width: 78px;
    height: 36px;
    margin-left: 0;
    justify-self: end;
  }

  .page-inner {
    padding: 32px 20px 0;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .home .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  h1,
  .home h1 {
    font-size: 38px;
    white-space: normal;
  }

  .eyebrow {
    max-width: 100%;
    font-size: 13px;
  }

  .lead {
    font-size: 15px;
  }

  .visual {
    width: 100%;
    min-height: 280px;
    margin-top: 24px;
    transform: none;
    overflow: hidden;
  }

  .home .visual {
    min-height: 300px;
  }

  .home .market-panel {
    width: 340px;
    height: 220px;
    left: 0;
    right: auto;
    top: 0;
  }

  .home .ai-market-card {
    width: 240px;
    height: 132px;
    left: 110px;
    top: 142px;
  }

  .terms-panel {
    width: 210px;
    height: 230px;
    left: 16px;
    right: auto;
    top: 20px;
  }

  .float-icon.scale { left: 6px; top: 64px; }
  .float-icon.warn { right: 6px; top: 56px; }
  .float-icon.kline { right: 42px; bottom: 36px; }

  .home-cards,
  .terms-cards {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .terms-card {
    min-height: auto;
  }

  .risk-note {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 18px;
    text-align: left;
  }
}