:root {
  --login-ink: #10151b;
  --login-muted: #667079;
  --login-line: #cfd5d9;
  --login-line-soft: rgba(16, 21, 27, 0.10);
  --login-paper: #fbfbf8;
  --login-cyan: #69dce0;
  --login-coral: #f07b6b;
  --login-danger: #c53f45;
  --login-ease: cubic-bezier(.18, .82, .22, 1);
}

html.intro-pending,
html.intro-pending body,
body.cinematic-intro-active {
  overflow: hidden;
}

/* Opening film ---------------------------------------------------------- */
.cinematic-intro {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: grid;
  overflow: hidden;
  background: #fff;
  color: var(--login-ink);
  isolation: isolate;
}

.cinematic-intro[hidden] {
  display: none;
}

.cinematic-intro__stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #fff url("./tiktok-intro-poster.webp") center / cover no-repeat;
  clip-path: inset(0 0 0 0);
  will-change: clip-path;
}

.cinematic-intro__stage::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,.10), transparent 14%, transparent 86%, rgba(255,255,255,.10)),
    linear-gradient(180deg, rgba(255,255,255,.08), transparent 22%, transparent 80%, rgba(255,255,255,.18));
  content: "";
  pointer-events: none;
}

.cinematic-intro__stage::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(135deg, #fff 0 12%, rgba(255,255,255,.98) 16%, transparent 25%),
    linear-gradient(-135deg, #fff 0 12%, rgba(255,255,255,.98) 16%, transparent 25%),
    linear-gradient(45deg, #fff 0 12%, rgba(255,255,255,.98) 16%, transparent 25%),
    linear-gradient(-45deg, #fff 0 12%, rgba(255,255,255,.98) 16%, transparent 25%);
  content: "";
  pointer-events: none;
}

.cinematic-intro__video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  object-position: center;
  transform: scale(1.015);
  transform-origin: center;
  transition: transform 820ms var(--login-ease), filter 620ms ease;
}

.cinematic-intro.is-settled .cinematic-intro__video {
  filter: saturate(.94) contrast(1.02);
  transform: scale(1);
}

.cinematic-intro__seam {
  position: absolute;
  top: 4vh;
  bottom: 4vh;
  left: 50%;
  z-index: 3;
  width: 1px;
  opacity: 0;
  background: linear-gradient(180deg, transparent, rgba(17,23,29,.55) 17%, rgba(17,23,29,.72) 83%, transparent);
  box-shadow: -1px 0 0 rgba(105,220,224,.42), 1px 0 0 rgba(240,123,107,.28);
  transform: scaleY(.18);
  transform-origin: center;
  transition: opacity 420ms ease, transform 720ms var(--login-ease);
  pointer-events: none;
}

.cinematic-intro__seam::before,
.cinematic-intro__seam::after {
  position: absolute;
  left: 50%;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  content: "";
  transform: translate(-50%, -50%);
}

.cinematic-intro__seam::before {
  top: 36%;
  background: var(--login-cyan);
  box-shadow: 0 0 18px rgba(105,220,224,.85);
}

.cinematic-intro__seam::after {
  top: 64%;
  background: var(--login-coral);
  box-shadow: 0 0 16px rgba(240,123,107,.72);
}

.cinematic-intro.is-settled .cinematic-intro__seam {
  opacity: 1;
  transform: scaleY(1);
}

.cinematic-intro__index {
  position: absolute;
  left: clamp(20px, 3vw, 52px);
  bottom: clamp(18px, 3vw, 42px);
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: 0;
  color: #41474d;
  font: 700 10px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .13em;
  transition: opacity 420ms ease 120ms;
}

.cinematic-intro__index::before {
  width: 34px;
  height: 1px;
  background: currentColor;
  content: "";
}

.cinematic-intro.is-settled .cinematic-intro__index {
  opacity: .72;
}

.cinematic-intro__skip {
  position: absolute;
  top: clamp(16px, 2.5vw, 34px);
  right: clamp(16px, 2.5vw, 34px);
  z-index: 5;
  min-width: 96px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(16,21,27,.18);
  border-radius: 999px;
  background: rgba(255,255,255,.76);
  color: var(--login-ink);
  font: 700 12px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  cursor: pointer;
  backdrop-filter: blur(12px);
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.cinematic-intro__skip:hover {
  border-color: rgba(16,21,27,.38);
  background: rgba(255,255,255,.96);
  transform: translateY(-1px);
}

.cinematic-intro__skip:focus-visible {
  outline: 3px solid rgba(105,220,224,.42);
  outline-offset: 3px;
}

.cinematic-intro.is-revealing .cinematic-intro__stage {
  clip-path: inset(0 50% 0 50%);
  transition: clip-path 920ms var(--login-ease);
}

.cinematic-intro.is-revealing {
  background: transparent;
}

.cinematic-intro.is-revealing .cinematic-intro__seam {
  opacity: .95;
  transform: scaleY(.92);
}

.cinematic-intro.is-revealing .cinematic-intro__skip,
.cinematic-intro.is-revealing .cinematic-intro__index {
  opacity: 0;
  pointer-events: none;
  transition-delay: 0ms;
}

/* Login stage ----------------------------------------------------------- */
#loginGate.login-gate {
  position: fixed;
  inset: 0;
  z-index: 1200;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  overflow: auto;
  padding: clamp(12px, 2vw, 30px);
  background:
    linear-gradient(rgba(255,255,255,.88), rgba(255,255,255,.88)),
    repeating-linear-gradient(90deg, transparent 0 63px, rgba(17,23,29,.035) 63px 64px),
    repeating-linear-gradient(0deg, transparent 0 63px, rgba(17,23,29,.035) 63px 64px),
    var(--login-paper);
}

#loginGate.login-gate::before {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 7% 9%, rgba(105,220,224,.13), transparent 18%),
    radial-gradient(circle at 94% 86%, rgba(240,123,107,.10), transparent 17%);
  content: "";
  pointer-events: none;
}

#loginGate .login-frame {
  position: relative;
  z-index: 1;
  width: min(1400px, 100%);
  min-height: min(810px, calc(100dvh - 48px));
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(440px, .96fr);
  overflow: hidden;
  border: 1px solid rgba(16,21,27,.14);
  border-radius: 8px;
  background: #fff url("./login-transition-bg.webp") center / cover no-repeat;
  box-shadow: 0 32px 90px rgba(23,29,34,.12), 0 1px 0 rgba(255,255,255,.95) inset;
  clip-path: inset(0 0 0 0);
  isolation: isolate;
  transition: clip-path 920ms var(--login-ease), box-shadow 920ms ease;
}

#loginGate .login-frame::before {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(90deg, rgba(255,255,255,.05) 0 46%, rgba(255,255,255,.72) 53%, rgba(255,255,255,.98) 70% 100%);
  content: "";
  pointer-events: none;
}

#loginGate .login-frame::after {
  position: absolute;
  top: 4%;
  bottom: 4%;
  left: 52%;
  z-index: 1;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(16,21,27,.18) 13%, rgba(16,21,27,.18) 87%, transparent);
  box-shadow: -1px 0 0 rgba(105,220,224,.18), 1px 0 0 rgba(240,123,107,.10);
  content: "";
  pointer-events: none;
}

#loginGate .login-story,
#loginGate .login-panel {
  position: relative;
  z-index: 2;
  min-width: 0;
}

#loginGate .login-story {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: clamp(38px, 4.5vw, 66px);
  color: var(--login-ink);
  background: transparent;
}

#loginGate .login-story::before,
#loginGate .login-story::after {
  display: none;
}

#loginGate .login-score-brand {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 10px;
  border: 1px solid rgba(16,21,27,.12);
  border-left: 2px solid #151a1f;
  background: rgba(255,255,255,.88);
  color: var(--login-ink);
  backdrop-filter: blur(8px);
}

#loginGate .score-logo-mark {
  position: relative;
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 9px;
  background: #10151b;
  color: #fff;
  box-shadow: 0 6px 16px rgba(16,21,27,.18), inset 0 1px 0 rgba(255,255,255,.09);
}

#loginGate .score-logo-mark::before {
  position: relative;
  z-index: 1;
  color: #fff;
  content: "TK";
  font: 900 13px/1 "Arial Narrow", "Avenir Next Condensed", Arial, sans-serif;
  letter-spacing: -.08em;
  text-shadow: -1px 0 #25f4ee, 1px 0 #fe2c55;
  transform: skewX(-7deg);
}

#loginGate .score-logo-mark::after {
  position: absolute;
  right: 6px;
  bottom: 5px;
  left: 6px;
  height: 2px;
  background: linear-gradient(90deg, #25f4ee 0 47%, #fe2c55 53% 100%);
  content: "";
  opacity: .86;
}

#loginGate .login-score-brand strong,
#loginGate .login-brand strong {
  color: var(--login-ink);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -.02em;
}

#loginGate .login-kicker {
  margin-top: 8px;
  padding: 5px 8px;
  border: 1px solid rgba(16,21,27,.10);
  border-radius: 0;
  background: rgba(255,255,255,.82);
  color: #525b63;
  font: 700 10px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .14em;
}

#loginGate .login-story h1 {
  position: relative;
  max-width: 480px;
  margin: clamp(136px, 21vh, 205px) 0 18px;
  color: var(--login-ink);
  font-family: "Arial Narrow", "Avenir Next Condensed", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(45px, 4.3vw, 66px);
  font-weight: 760;
  line-height: .98;
  letter-spacing: -.065em;
  text-wrap: balance;
  text-shadow: 0 1px 0 rgba(255,255,255,.86);
}

#loginGate .login-story p {
  max-width: 410px;
  margin: 0;
  color: #4f5962;
  font-size: 14px;
  line-height: 1.75;
  text-shadow: 0 1px 0 rgba(255,255,255,.92);
}

#loginGate .login-flow {
  position: relative;
  inset: auto;
  width: min(430px, 100%);
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  color: var(--login-ink);
}

#loginGate .login-flow span {
  min-height: 44px;
  display: grid;
  align-content: center;
  padding: 8px 10px;
  border: 1px solid rgba(16,21,27,.18);
  border-radius: 3px;
  background: rgba(255,255,255,.78);
  color: #30383f;
  font: 750 11px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-align: center;
  backdrop-filter: blur(6px);
}

#loginGate .login-flow b {
  color: #687078;
  font-weight: 500;
}

#loginGate .login-panel {
  display: grid;
  align-content: center;
  padding: clamp(44px, 5.6vw, 80px);
  border-left: 1px solid rgba(16,21,27,.08);
  background: linear-gradient(90deg, rgba(255,255,255,.76), rgba(255,255,255,.97) 28%, #fff 100%);
}

#loginGate .login-brand {
  display: flex;
  align-items: center;
  gap: 13px;
  margin: 0 0 clamp(36px, 5vh, 58px);
}

#loginGate .login-brand .score-logo-mark {
  width: 42px;
  height: 42px;
  flex-basis: 42px;
  transform: none;
}

#loginGate .login-brand .score-logo-mark::before {
  font-size: 15px;
}

#loginGate .login-brand .small {
  margin-top: 4px;
  color: #7a838b;
  font: 700 9px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .11em;
  text-transform: uppercase;
}

#loginGate .login-panel h2 {
  margin: 0;
  color: var(--login-ink);
  font-family: "Arial Narrow", "Avenir Next Condensed", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(36px, 3.4vw, 50px);
  font-weight: 760;
  line-height: 1;
  letter-spacing: -.055em;
}

#loginGate .login-panel > p {
  margin: 12px 0 28px;
  color: var(--login-muted);
  font-size: 13px;
}

#loginGate .login-panel .field {
  gap: 8px;
  margin-top: 15px;
}

#loginGate .login-panel .field label {
  color: #353d44;
  font: 760 11px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .04em;
}

#loginGate .login-panel input:not([type="checkbox"]) {
  min-height: 52px;
  padding: 12px 15px;
  border: 1px solid var(--login-line);
  border-radius: 4px;
  background: rgba(255,255,255,.88);
  color: var(--login-ink);
  font-size: 14px;
  box-shadow: 0 1px 0 rgba(255,255,255,.95) inset;
}

#loginGate .login-panel input:not([type="checkbox"]):hover {
  border-color: #aab3ba;
}

#loginGate .login-panel input:not([type="checkbox"]):focus {
  border-color: #171c21;
  outline: none;
  box-shadow: 0 0 0 3px rgba(105,220,224,.18), 3px 0 0 rgba(240,123,107,.28) inset;
}

#loginGate .login-panel input[aria-invalid="true"] {
  border-color: var(--login-danger);
  box-shadow: 0 0 0 3px rgba(197,63,69,.10);
}

#loginGate .remember-row {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin-top: 13px;
  color: #535d65;
  font-size: 11px;
  font-weight: 650;
  line-height: 1.55;
}

#loginGate .remember-row input {
  width: 17px;
  height: 17px;
  flex: 0 0 17px;
  margin: 1px 0 0;
  accent-color: #10151b;
}

#loginGate .login-submit {
  position: relative;
  width: 100%;
  min-height: 52px;
  margin-top: 18px;
  overflow: hidden;
  border: 1px solid #11161c !important;
  border-radius: 4px !important;
  background: #11161c !important;
  color: #fff !important;
  box-shadow: none !important;
  font-weight: 800;
  letter-spacing: .04em;
}

#loginGate .login-submit::after {
  position: absolute;
  right: -24px;
  bottom: 0;
  width: 92px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--login-cyan) 42%, var(--login-coral));
  content: "";
  transform: translateX(0);
  transition: transform 320ms var(--login-ease);
}

#loginGate .login-submit:hover {
  background: #20272d !important;
  transform: translateY(-1px) !important;
}

#loginGate .login-submit:hover::after {
  transform: translateX(-280px);
}

#loginGate .login-submit:focus-visible,
#loginGate .login-network-check:focus-visible {
  outline: 3px solid rgba(105,220,224,.36);
  outline-offset: 3px;
}

#loginGate .login-submit:disabled {
  cursor: wait;
  opacity: .66;
  transform: none !important;
}

#loginGate .login-network-check {
  width: 100%;
  min-height: 46px;
  margin-top: 9px;
  border: 1px solid var(--login-line) !important;
  border-radius: 4px !important;
  background: rgba(255,255,255,.76) !important;
  color: #343c43 !important;
  box-shadow: none !important;
}

#loginGate .login-network-check:hover {
  border-color: #8f999f !important;
  background: #fff !important;
  color: #11161c !important;
}

#loginGate .login-status {
  margin-top: 13px;
  padding: 11px 13px;
  border: 1px solid rgba(197,63,69,.26);
  border-radius: 4px;
  background: #fff3f3;
  color: var(--login-danger);
  font-size: 12px;
  font-weight: 700;
}

#loginGate .login-status.success {
  border-color: rgba(39,126,88,.24);
  background: #f0faf5;
  color: #236b4c;
}

#loginGate .login-client-info {
  margin-top: 13px;
  color: #717b83;
  font: 650 9px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .015em;
  text-align: left;
}

#loginGate .login-note {
  display: flex;
  gap: 9px;
  margin-top: 24px;
  padding: 13px 0 0;
  border: 0;
  border-top: 1px solid var(--login-line-soft);
  border-radius: 0;
  background: transparent;
  color: #6b747c;
  font-size: 10px;
}

#loginGate .login-note > span:first-child {
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  border: 1px solid #879098;
  border-radius: 50%;
  font: 700 9px/1 Georgia, serif;
}

/* The page and the film exchange visibility on the same center seam. */
html.intro-pending #loginGate .login-frame {
  clip-path: inset(0 0 0 0);
  box-shadow: 0 32px 90px rgba(23,29,34,.12), 0 1px 0 rgba(255,255,255,.95) inset;
}

html.intro-pending #loginGate .login-story > *,
html.intro-pending #loginGate .login-panel > * {
  opacity: 0;
  transform: translateY(14px);
}

html.intro-pending #loginGate .login-story > * {
  transform: translateX(-18px);
}

html.intro-pending #loginGate.is-ready .login-frame {
  clip-path: inset(0 0 0 0);
  box-shadow: 0 32px 90px rgba(23,29,34,.12), 0 1px 0 rgba(255,255,255,.95) inset;
}

html.intro-pending #loginGate.is-ready .login-story > *,
html.intro-pending #loginGate.is-ready .login-panel > * {
  opacity: 1;
  transform: translate(0, 0);
  transition: opacity 520ms ease, transform 680ms var(--login-ease);
}

html.intro-pending #loginGate.is-ready .login-story > :nth-child(1) { transition-delay: 190ms; }
html.intro-pending #loginGate.is-ready .login-story > :nth-child(2) { transition-delay: 250ms; }
html.intro-pending #loginGate.is-ready .login-story > :nth-child(3) { transition-delay: 320ms; }
html.intro-pending #loginGate.is-ready .login-story > :nth-child(4) { transition-delay: 390ms; }
html.intro-pending #loginGate.is-ready .login-story > :nth-child(5) { transition-delay: 470ms; }
html.intro-pending #loginGate.is-ready .login-panel > :nth-child(1) { transition-delay: 260ms; }
html.intro-pending #loginGate.is-ready .login-panel > :nth-child(2) { transition-delay: 330ms; }
html.intro-pending #loginGate.is-ready .login-panel > :nth-child(3) { transition-delay: 390ms; }
html.intro-pending #loginGate.is-ready .login-panel > :nth-child(4) { transition-delay: 460ms; }
html.intro-pending #loginGate.is-ready .login-panel > :nth-child(5) { transition-delay: 520ms; }

@media (max-width: 920px) {
  #loginGate.login-gate {
    position: fixed;
    padding: 0;
    place-items: stretch;
  }

  #loginGate .login-frame {
    width: 100%;
    min-height: 100dvh;
    grid-template-columns: 1fr;
    overflow: visible;
    border: 0;
    border-radius: 0;
    background: #fff;
  }

  #loginGate .login-frame::before,
  #loginGate .login-frame::after {
    display: none;
  }

  #loginGate .login-story {
    min-height: 310px;
    padding: 28px clamp(24px, 7vw, 58px) 34px;
    background:
      linear-gradient(90deg, rgba(255,255,255,.12), rgba(255,255,255,.82) 82%),
      url("./login-transition-bg.webp") left center / cover no-repeat;
  }

  #loginGate .login-story h1 {
    max-width: 520px;
    margin: 58px 0 12px;
    font-size: clamp(36px, 8vw, 52px);
  }

  #loginGate .login-story p {
    max-width: 440px;
  }

  #loginGate .login-flow {
    display: none;
  }

  #loginGate .login-panel {
    padding: 42px clamp(24px, 8vw, 70px) 54px;
    border-top: 1px solid rgba(16,21,27,.10);
    border-left: 0;
    background: #fff;
  }

  #loginGate .login-brand {
    margin-bottom: 34px;
  }
}

@media (max-width: 560px) {
  .cinematic-intro__video {
    transform: scale(1);
  }

  .cinematic-intro__index {
    display: none;
  }

  #loginGate .login-story {
    min-height: 250px;
    padding: 24px 22px 28px;
    background-position: 23% center;
  }

  #loginGate .login-score-brand strong {
    font-size: 14px;
  }

  #loginGate .login-kicker {
    margin-top: 12px;
    font-size: 8px;
  }

  #loginGate .login-story h1 {
    margin-top: 34px;
    font-size: 35px;
  }

  #loginGate .login-story p {
    font-size: 12px;
  }

  #loginGate .login-panel {
    padding: 34px 22px 42px;
  }

  #loginGate .login-panel h2 {
    font-size: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cinematic-intro {
    display: none !important;
  }

  html.intro-pending #loginGate .login-frame,
  html.intro-pending #loginGate .login-story > *,
  html.intro-pending #loginGate .login-panel > * {
    clip-path: none !important;
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  #loginGate .login-submit:hover {
    transform: none !important;
  }
}

@media print {
  .cinematic-intro,
  #loginGate {
    display: none !important;
  }
}