:root {
  /* 海号 · 信号台：海雾底 + 深海墨青 + 单一信号青 */
  --fog: #e6eef0;
  --fog-deep: #d5e2e6;
  --foam: #f3f8f9;
  --ink: #0b2428;
  --ink-soft: #3d5a60;
  --muted: #5f7a80;
  --dim: #8aa0a6;
  --sea: #0b4f56;
  --sea-deep: #08383d;
  --signal: #14918a;
  --signal-soft: rgba(20, 145, 138, 0.14);
  --on-signal: #eef9f8;
  --border: rgba(11, 36, 40, 0.1);
  --ok: #1b7d52;
  --danger: #b42318;
  --shadow: 0 22px 50px rgba(8, 56, 61, 0.12);
  --radius: 20px;
  --radius-sm: 12px;
  --font-display: "Sora", sans-serif;
  --font-body: "Sora", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { height: 100%; }
[hidden] { display: none !important; }
body {
  margin: 0;
  min-height: 100dvh;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  background:
    radial-gradient(1100px 640px at 8% -12%, rgba(20, 145, 138, 0.18), transparent 58%),
    radial-gradient(900px 520px at 100% 0%, rgba(11, 79, 86, 0.12), transparent 52%),
    linear-gradient(165deg, var(--fog) 0%, #edf4f5 48%, var(--fog-deep) 100%);
  overflow-x: hidden;
}

.atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.wave-field {
  position: absolute;
  inset: auto 0 -8% 0;
  height: 42%;
  opacity: 0.55;
  background:
    radial-gradient(ellipse 120% 80% at 50% 100%, rgba(11, 79, 86, 0.16), transparent 70%);
}
.wave-field svg {
  position: absolute;
  left: -5%;
  bottom: 0;
  width: 110%;
  height: 100%;
  color: rgba(11, 79, 86, 0.18);
}
.wave-field .w2 {
  color: rgba(20, 145, 138, 0.16);
  animation: waveDrift 12s ease-in-out infinite alternate;
}
.wave-field .w1 {
  animation: waveDrift 16s ease-in-out infinite alternate-reverse;
}
@keyframes waveDrift {
  from { transform: translateX(0); }
  to { transform: translateX(-3%); }
}

.signal-rings {
  position: absolute;
  width: min(520px, 88vw);
  height: min(520px, 88vw);
  right: -12%;
  top: -8%;
  border-radius: 50%;
  background:
    radial-gradient(circle, transparent 38%, rgba(20, 145, 138, 0.05) 39%, transparent 40%),
    radial-gradient(circle, transparent 54%, rgba(11, 79, 86, 0.06) 55%, transparent 56%),
    radial-gradient(circle, transparent 70%, rgba(20, 145, 138, 0.05) 71%, transparent 72%);
  animation: ringPulse 8s ease-in-out infinite;
}
@keyframes ringPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.04); opacity: 0.75; }
}

.vig {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 90% 70% at 42% 18%, transparent 40%, rgba(213, 226, 230, 0.55) 100%);
}
.grain {
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.top, .stage, .foot { position: relative; z-index: 1; }

.top {
  max-width: 680px;
  margin: 0 auto;
  padding: 28px 22px 6px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--ink);
  width: fit-content;
}
.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(145deg, var(--sea), var(--signal));
  color: var(--on-signal);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow:
    0 0 0 7px rgba(20, 145, 138, 0.1),
    0 14px 28px rgba(8, 56, 61, 0.18);
  position: relative;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: 18px;
  border: 1px solid rgba(20, 145, 138, 0.18);
  animation: markHalo 3.2s ease-in-out infinite;
}
@keyframes markHalo {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.08); opacity: 0.25; }
}
.brand-mark svg {
  width: 26px;
  height: 26px;
  display: block;
  position: relative;
  z-index: 1;
}
.brand-copy { display: grid; gap: 2px; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.15rem, 7vw, 2.9rem);
  letter-spacing: -0.055em;
  line-height: 0.92;
  color: var(--sea-deep);
  text-wrap: balance;
}
.brand-tag {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.stage {
  max-width: 680px;
  margin: 0 auto;
  padding: 14px 22px 56px;
}

.panel {
  background: color-mix(in srgb, var(--foam) 88%, white);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(26px, 4.8vw, 40px);
  position: relative;
  overflow: hidden;
}
.panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--signal), var(--sea));
}
.panel::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -50px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 145, 138, 0.1), transparent 68%);
  pointer-events: none;
}

.reveal { animation: rise 0.65s cubic-bezier(.22, 1, .36, 1) both; }
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

.step-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 6px 12px 6px 8px;
  border-radius: 999px;
  background: var(--signal-soft);
  color: var(--sea);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.step-chip .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(20, 145, 138, 0.15);
}

.headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.95rem, 5.8vw, 2.65rem);
  letter-spacing: -0.045em;
  line-height: 0.98;
  margin: 0 0 14px;
  color: var(--sea-deep);
  text-wrap: balance;
}
.headline.small {
  font-size: clamp(1.45rem, 4vw, 1.95rem);
  line-height: 1.05;
}
.lede {
  margin: 0 0 28px;
  color: var(--ink-soft);
  font-size: 1.04rem;
  font-weight: 400;
  line-height: 1.55;
  max-width: 34em;
  text-wrap: pretty;
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}
.field span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
}
.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.82);
  border-radius: var(--radius-sm);
  padding: 14px 15px;
  font: inherit;
  font-size: 1.02rem;
  color: var(--ink);
  outline: none;
  transition: border-color .18s, box-shadow .18s;
}
.field input::placeholder,
.field textarea::placeholder {
  color: var(--dim);
}
.field input:focus,
.field textarea:focus {
  border-color: rgba(20, 145, 138, 0.5);
  box-shadow: 0 0 0 4px rgba(20, 145, 138, 0.14);
}
.field input {
  letter-spacing: 0.07em;
  text-transform: uppercase;
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  transition: background .15s ease, transform .12s ease, opacity .15s ease, border-color .15s, box-shadow .15s;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.42; cursor: not-allowed; transform: none; }
.btn.primary {
  background: linear-gradient(135deg, var(--signal), var(--sea));
  color: var(--on-signal);
  width: 100%;
  box-shadow: 0 12px 26px rgba(11, 79, 86, 0.28);
}
.btn.primary:hover:not(:disabled) {
  filter: brightness(1.05);
  box-shadow: 0 14px 30px rgba(11, 79, 86, 0.34);
}
.btn.secondary {
  background: rgba(20, 145, 138, 0.1);
  color: var(--sea);
  border: 1px solid rgba(20, 145, 138, 0.22);
}
.btn.secondary:hover:not(:disabled) {
  background: rgba(20, 145, 138, 0.16);
}
.btn.danger {
  background: rgba(180, 35, 24, 0.08);
  color: var(--danger);
  border: 1px solid rgba(180, 35, 24, 0.18);
  width: 100%;
  grid-column: 1 / -1;
}
.btn.ghost {
  background: transparent;
  color: var(--sea);
  border: 1px solid var(--border);
  padding: 8px 12px;
  font-size: 0.88rem;
}
.btn.ghost:hover:not(:disabled) {
  border-color: rgba(20, 145, 138, 0.4);
  background: rgba(20, 145, 138, 0.06);
}

.hint {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}
.hint.tight { margin-top: 20px; }
.error {
  margin: 14px 0 0;
  color: var(--danger);
  font-weight: 600;
  font-size: 0.94rem;
}
.ok {
  margin-top: 16px;
  color: var(--ok);
  font-weight: 650;
}

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.trust-item {
  display: grid;
  gap: 4px;
}
.trust-item strong {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--sea-deep);
  letter-spacing: -0.02em;
}
.trust-item span {
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.35;
}

.status-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-weight: 650;
  color: var(--sea-deep);
}
.pulse {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0 rgba(20, 145, 138, 0.45);
  animation: ping 1.7s ease-out infinite;
  flex-shrink: 0;
}
.pulse.done {
  background: var(--ok);
  animation: none;
  box-shadow: none;
}
@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(20, 145, 138, 0.45); }
  70% { box-shadow: 0 0 0 12px rgba(20, 145, 138, 0); }
  100% { box-shadow: 0 0 0 0 rgba(20, 145, 138, 0); }
}

/* Flow steps */
.flow-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
}
.flow-step {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(11, 79, 86, 0.04);
  color: var(--dim);
  font-size: 0.78rem;
  font-weight: 600;
  transition: background .2s, color .2s, transform .2s;
}
.flow-step span {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.7rem;
  background: rgba(11, 79, 86, 0.08);
  font-family: var(--font-mono);
}
.flow-step.is-active {
  background: var(--signal-soft);
  color: var(--sea);
  transform: translateY(-1px);
}
.flow-step.is-active span {
  background: var(--signal);
  color: var(--on-signal);
}
.flow-step.is-done {
  color: var(--sea);
}
.flow-step.is-done span {
  background: rgba(20, 145, 138, 0.2);
  color: var(--sea);
}

/* Listening bars — waiting for SMS */
.listen-bar {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 22px;
  margin: 0 0 18px;
}
.listen-bar span {
  flex: 1;
  max-width: 10px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--signal), var(--sea));
  opacity: 0.55;
  height: 30%;
  transform-origin: bottom;
  animation: listenWave 1.1s ease-in-out infinite;
}
.listen-bar span:nth-child(1) { animation-delay: 0s; }
.listen-bar span:nth-child(2) { animation-delay: .08s; height: 45%; }
.listen-bar span:nth-child(3) { animation-delay: .16s; height: 70%; }
.listen-bar span:nth-child(4) { animation-delay: .24s; height: 95%; }
.listen-bar span:nth-child(5) { animation-delay: .32s; height: 70%; }
.listen-bar span:nth-child(6) { animation-delay: .4s; height: 45%; }
.listen-bar span:nth-child(7) { animation-delay: .48s; height: 30%; }
@keyframes listenWave {
  0%, 100% { transform: scaleY(0.45); opacity: 0.35; }
  50% { transform: scaleY(1); opacity: 0.9; }
}
#view-session.is-acquiring .listen-bar,
#view-session.is-changing .listen-bar { display: none; }
#view-session.is-acquiring .phone {
  background: linear-gradient(90deg, rgba(11,79,86,0.06), rgba(20,145,138,0.12), rgba(11,79,86,0.06));
  background-size: 200% 100%;
  animation: shimmer 1.2s linear infinite;
  border-radius: 8px;
  min-height: 1.4em;
  color: transparent;
}
#view-session.is-changing .phone,
.phone.phone-pending {
  color: var(--muted);
  font-size: 1rem;
  letter-spacing: 0;
  font-family: var(--font-body);
  font-weight: 500;
  animation: pendingPulse 1.2s ease-in-out infinite;
}
@keyframes pendingPulse {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 1; }
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.wait-meta {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.8rem;
}
.wait-meta strong {
  font-family: var(--font-mono);
  font-weight: 650;
  color: var(--sea);
  font-variant-numeric: tabular-nums;
}
.wait-meta .sep { opacity: 0.45; }

.timer-track {
  margin-top: 6px;
  height: 4px;
  border-radius: 999px;
  background: rgba(11, 79, 86, 0.08);
  overflow: hidden;
  width: min(160px, 100%);
}
.timer-track i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--signal), var(--sea));
  transition: width .4s ease;
}
.timer.is-ready #timer-count {
  color: var(--signal);
}
.timer.is-ready .timer-track i {
  background: var(--ok);
}

.btn {
  position: relative;
}
.btn .btn-spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(238, 249, 248, 0.35);
  border-top-color: var(--on-signal);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.btn.is-loading .btn-label { opacity: 0.85; }
.btn.is-loading .btn-spinner {
  display: inline-block;
  margin-left: 8px;
  vertical-align: -3px;
}
.btn.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn.ghost.copied {
  background: rgba(27, 125, 82, 0.1);
  border-color: rgba(27, 125, 82, 0.28);
  color: var(--ok);
}

.phone-swap { animation: phoneSwap .45s cubic-bezier(.22,1,.36,1) both; }
@keyframes phoneSwap {
  from { opacity: 0; transform: translateY(8px) scale(0.98); filter: blur(3px); }
  to { opacity: 1; transform: none; filter: none; }
}

.code-arrive { animation: codeArrive .55s cubic-bezier(.22,1,.36,1) both; }
.code-pop { animation: codePop .55s cubic-bezier(.22,1,.36,1) both; }
@keyframes codeArrive {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
@keyframes codePop {
  0% { transform: scale(0.92); letter-spacing: 0.28em; }
  60% { transform: scale(1.03); }
  100% { transform: scale(1); letter-spacing: 0.2em; }
}

.shake-in { animation: shakeIn .4s ease both; }
@keyframes shakeIn {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

#view-session.has-code .status-row.is-just-arrived {
  animation: softGlow .6s ease both;
}
@keyframes softGlow {
  from { filter: brightness(1.08); }
  to { filter: none; }
}

.meta-label {
  margin: 0 0 8px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.meta-icon {
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: var(--signal-soft);
  color: var(--sea);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.meta-icon svg { width: 12px; height: 12px; display: block; }

.phone-block { margin-bottom: 24px; }
.phone-line {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.phone {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 4.6vw, 1.85rem);
  letter-spacing: 0.03em;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1.25;
  color: var(--sea-deep);
  word-break: break-all;
}
.sms-code {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 6vw, 2.4rem);
  letter-spacing: 0.2em;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--ok);
}
@keyframes numberIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.code-block {
  margin: 8px 0 24px;
  padding: 16px 18px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(27, 125, 82, 0.08), rgba(20, 145, 138, 0.08));
  border: 1px solid rgba(27, 125, 82, 0.16);
}

.actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
}
.timer {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--muted);
  font-size: 0.82rem;
}
.timer strong {
  font-family: var(--font-mono);
  font-size: 1.28rem;
  color: var(--sea-deep);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}
#complete-btn, #refund-btn { grid-column: 1 / -1; }

.feedback-form .btn.primary { margin-top: 8px; }
.feedback-form .btn.ghost { width: 100%; margin-top: 8px; }
.rating {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}
.star {
  flex: 1;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.75);
  border-radius: var(--radius-sm);
  padding: 12px 0;
  font-family: var(--font-mono);
  font-weight: 650;
  cursor: pointer;
  color: var(--muted);
  transition: transform .12s ease, background .15s, border-color .15s;
}
.star:hover { transform: translateY(-1px); }
.star.active {
  background: var(--signal-soft);
  border-color: rgba(20, 145, 138, 0.4);
  color: var(--sea);
}
.check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-weight: 600;
  color: var(--muted);
}

.foot {
  text-align: center;
  padding: 0 22px 30px;
  color: var(--muted);
  font-size: 0.82rem;
  display: grid;
  gap: 4px;
}
.foot strong {
  color: var(--sea-deep);
  font-weight: 700;
  letter-spacing: -0.02em;
}

@media (max-width: 520px) {
  .actions { grid-template-columns: 1fr; }
  .btn.secondary { width: 100%; }
  .trust-row { grid-template-columns: 1fr; gap: 12px; }
  .flow-steps { gap: 6px; }
  .flow-step { padding: 7px 8px; font-size: 0.72rem; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .phone,
  .code-block,
  .pulse,
  .brand-mark::after,
  .signal-rings,
  .wave-field .w1,
  .wave-field .w2,
  .listen-bar span,
  .phone-swap,
  .code-arrive,
  .code-pop,
  .shake-in,
  .btn .btn-spinner,
  #view-session.is-acquiring .phone {
    animation: none !important;
  }
  #view-session.is-acquiring .phone,
  #view-session.is-changing .phone,
  .phone.phone-pending {
    animation: none !important;
  }
  #view-session.is-acquiring .phone {
    color: var(--sea-deep);
    background: rgba(11, 79, 86, 0.06);
  }
  #view-session.is-changing .phone,
  .phone.phone-pending {
    color: var(--muted);
    opacity: 1;
  }
}