:root {
  --ink: #081642;
  --ink-soft: #4f607d;
  --cyan: #12bbdf;
  --cyan-deep: #0088aa;
  --ice: #effaff;
  --paper: #fbfdff;
  --line: #cdebf4;
  --white: #ffffff;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Baskerville, Georgia, serif;
  --sans: "Avenir Next", Avenir, "Trebuchet MS", ui-sans-serif, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
  overflow-x: hidden;
}

body {
  position: relative;
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 86% 8%, rgba(56, 200, 235, .14), transparent 27rem),
    linear-gradient(180deg, #f4fbff 0, #fff 36rem, #fbfdff 100%);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.page-orbit {
  position: absolute;
  z-index: 0;
  top: -370px;
  right: -380px;
  width: 890px;
  height: 890px;
  border: 1px solid rgba(18, 187, 223, .28);
  border-radius: 50%;
  pointer-events: none;
}

.page-orbit::before,
.page-orbit::after {
  position: absolute;
  border: 1px dashed rgba(18, 187, 223, .16);
  border-radius: 50%;
  content: "";
}

.page-orbit::before { inset: 90px; }
.page-orbit::after { inset: 190px; }

.site-header,
main,
footer {
  position: relative;
  z-index: 1;
}

.site-header {
  display: flex;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 26px 0;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -.02em;
  text-decoration: none;
}

.brand img {
  border-radius: 12px;
  box-shadow: 0 10px 26px rgba(16, 67, 112, .16);
}

nav,
.footer-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

nav a,
.footer-links a {
  color: #53627c;
  font-size: .92rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 160ms ease;
}

nav a:hover,
.footer-links a:hover,
.text-link:hover { color: var(--cyan-deep); }

.hero {
  display: grid;
  width: min(1180px, calc(100% - 48px));
  min-height: 720px;
  margin: 0 auto;
  padding: 74px 0 96px;
  grid-template-columns: 1.08fr .92fr;
  align-items: center;
  gap: 78px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--cyan-deep);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

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

h1,
h2 {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -.045em;
}

h1 {
  margin-bottom: 28px;
  font-size: clamp(4rem, 7vw, 6.6rem);
  line-height: .88;
}

h1 em {
  color: var(--cyan-deep);
  font-weight: 400;
}

.hero-description {
  max-width: 640px;
  margin-bottom: 32px;
  color: var(--ink-soft);
  font-size: 1.22rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 25px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 9px;
  align-items: center;
  justify-content: center;
  font-size: .92rem;
  font-weight: 750;
}

.button-primary {
  color: white;
  background: var(--ink);
  box-shadow: 0 14px 32px rgba(8, 22, 66, .18);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #1c4165;
  font-size: .94rem;
  font-weight: 750;
  text-decoration: none;
  transition: color 160ms ease;
}

.trust-line {
  margin: 22px 0 0;
  color: #71809a;
  font-size: .78rem;
  font-weight: 650;
  letter-spacing: .025em;
}

.hero-visual {
  position: relative;
  height: 600px;
}

.hero-visual::before {
  position: absolute;
  inset: 35px -85px 35px 30px;
  border: 1px solid rgba(18, 187, 223, .23);
  border-radius: 50%;
  content: "";
  transform: rotate(-14deg);
}

.popup-card {
  position: absolute;
  z-index: 2;
  top: 18px;
  right: 18px;
  width: 365px;
  overflow: hidden;
  border: 1px solid rgba(84, 167, 211, .32);
  border-radius: 27px;
  background: #f4f7fc;
  box-shadow: 0 34px 80px rgba(35, 90, 132, .2), 0 0 0 11px rgba(255, 255, 255, .62);
  transform: rotate(1.6deg);
}

.popup-card img {
  display: block;
  width: 100%;
  height: auto;
}

.date-stamp {
  position: absolute;
  z-index: 3;
  top: 55px;
  left: -6px;
  display: grid;
  width: 105px;
  height: 105px;
  border: 1px solid rgba(18, 187, 223, .38);
  border-radius: 50%;
  place-content: center;
  color: var(--ink);
  background: rgba(255, 255, 255, .86);
  box-shadow: 0 18px 42px rgba(46, 115, 153, .14);
  text-align: center;
  backdrop-filter: blur(10px);
}

.date-stamp span {
  color: var(--cyan-deep);
  font-size: .68rem;
  font-weight: 850;
  letter-spacing: .16em;
}

.date-stamp strong {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 600;
}

.orbit-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 3px solid white;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 1px var(--cyan);
}

.orbit-dot-one { right: -28px; bottom: 180px; }
.orbit-dot-two { left: 44px; bottom: 43px; width: 9px; height: 9px; }

.reveal {
  animation: reveal 700ms cubic-bezier(.2, .75, .25, 1) both;
}

.reveal-two { animation-delay: 140ms; }

@keyframes reveal {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.section {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 110px 0;
}

.section-heading {
  display: grid;
  margin-bottom: 54px;
  grid-template-columns: .65fr 1.35fr;
  align-items: start;
  gap: 52px;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(2.7rem, 5vw, 5rem);
  line-height: 1;
}

.steps {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  grid-template-columns: repeat(3, 1fr);
  list-style: none;
}

.steps li {
  position: relative;
  min-height: 260px;
  padding: 30px 36px 30px 0;
  border-right: 1px solid var(--line);
}

.steps li + li { padding-left: 36px; }
.steps li:last-child { border-right: 0; }

.step-number {
  display: block;
  margin-bottom: 64px;
  color: var(--cyan-deep);
  font-family: var(--serif);
  font-size: 1.2rem;
}

.steps h3 {
  margin-bottom: 12px;
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 600;
}

.steps p,
.feature-list span,
.privacy-copy p,
.note-panel > p:last-child,
.policy-intro,
.policy-article p,
.policy-article li {
  color: var(--ink-soft);
  line-height: 1.7;
}

.feature-layout {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 80px;
}

.feature-image {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: 0 30px 75px rgba(31, 91, 129, .14);
}

.feature-image img {
  display: block;
  width: 100%;
}

.feature-copy h2 { font-size: clamp(2.7rem, 4.2vw, 4.6rem); }

.feature-list {
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.feature-list li {
  display: grid;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 145px 1fr;
  gap: 20px;
}

.feature-list strong { font-size: .9rem; }
.feature-list span { font-size: .92rem; }

.privacy-panel {
  display: grid;
  padding: 80px;
  border: 1px solid #bde8f4;
  border-radius: 30px;
  grid-template-columns: .92fr 1.08fr;
  gap: 80px;
  background:
    radial-gradient(circle at 4% 100%, rgba(18, 187, 223, .18), transparent 38%),
    #effaff;
}

.privacy-panel h2 { margin-bottom: 0; }
.privacy-copy p { margin-bottom: 28px; font-size: 1.03rem; }

.privacy-tags {
  display: flex;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 10px;
}

.privacy-tags span {
  padding: 9px 13px;
  border: 1px solid #a8ddea;
  border-radius: 999px;
  color: #184b6c;
  background: rgba(255, 255, 255, .74);
  font-size: .77rem;
  font-weight: 750;
}

.note-panel {
  max-width: 920px;
  padding-top: 140px;
  padding-bottom: 140px;
  text-align: center;
}

.note-panel h2 { font-size: clamp(2.7rem, 4.8vw, 4.8rem); }
.note-panel > p:last-child { max-width: 720px; margin: 0 auto; }

footer {
  display: grid;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 34px 0 50px;
  border-top: 1px solid var(--line);
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
}

footer > p {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  color: #7a879d;
  font-size: .78rem;
}

.policy-main {
  width: min(900px, calc(100% - 48px));
  margin: 0 auto;
  padding: 100px 0 140px;
}

.policy-header {
  padding-bottom: 58px;
  border-bottom: 1px solid var(--line);
}

.policy-header h1 {
  max-width: 800px;
  font-size: clamp(3.6rem, 8vw, 7.2rem);
}

.policy-intro {
  max-width: 690px;
  font-size: 1.16rem;
}

.policy-meta {
  margin: 26px 0 0;
  color: #79869b;
  font-size: .82rem;
}

.policy-article {
  display: grid;
  padding-top: 40px;
  grid-template-columns: 220px 1fr;
  gap: 52px;
}

.policy-article nav {
  position: sticky;
  top: 30px;
  display: flex;
  align-self: start;
  flex-direction: column;
  align-items: flex-start;
  gap: 11px;
}

.policy-article nav a { font-size: .8rem; }

.policy-content section {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 22px;
}

.policy-content h2 {
  margin-bottom: 16px;
  font-family: var(--serif);
  font-size: 2rem;
  letter-spacing: -.025em;
}

.policy-content ul { padding-left: 22px; }
.policy-content code {
  padding: 2px 6px;
  border-radius: 5px;
  color: #10506c;
  background: #e8f8fd;
}

.support-card {
  margin-top: 44px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, .72);
  box-shadow: 0 28px 70px rgba(31, 91, 129, .1);
}

.support-card h2 { font-size: 2.6rem; }
.support-email { font-size: clamp(1.3rem, 4vw, 2.2rem); word-break: break-word; }

/* Social Scroll alternative page: an editorial migration timeline. */
.alternative-main { overflow: hidden; }

.alternative-hero {
  display: grid;
  width: min(1180px, calc(100% - 48px));
  min-height: 760px;
  margin: 0 auto;
  padding: 88px 0 120px;
  grid-template-columns: 1.04fr .96fr;
  align-items: center;
  gap: 88px;
}

.alternative-copy h1 { font-size: clamp(4rem, 7vw, 6.7rem); }

.year-ledger {
  position: relative;
  display: grid;
  min-height: 560px;
  padding: 38px 24px 30px 64px;
  align-content: center;
  gap: 88px;
  border: 1px solid rgba(18, 187, 223, .28);
  border-radius: 220px 220px 28px 28px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, .86), rgba(230, 248, 255, .72)),
    repeating-linear-gradient(90deg, transparent 0 38px, rgba(18, 187, 223, .08) 39px 40px);
  box-shadow: 0 32px 80px rgba(31, 91, 129, .13);
}

.ledger-line {
  position: absolute;
  top: 80px;
  bottom: 78px;
  left: 91px;
  width: 1px;
  background: linear-gradient(var(--line), var(--cyan), var(--ink));
}

.ledger-entry {
  position: relative;
  display: grid;
  grid-template-columns: 86px 1fr;
  align-items: start;
  gap: 26px;
}

.ledger-entry::before {
  position: absolute;
  top: 16px;
  left: 22px;
  width: 13px;
  height: 13px;
  border: 5px solid white;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 1px var(--cyan);
  content: "";
}

.ledger-entry-old { opacity: .64; }
.ledger-entry-old::after {
  position: absolute;
  top: 45px;
  right: 12px;
  left: 112px;
  height: 1px;
  background: rgba(8, 22, 66, .2);
  content: "";
  transform: rotate(-5deg);
}

.ledger-entry-now::before { background: var(--ink); box-shadow: 0 0 0 1px var(--ink), 0 0 0 9px rgba(18, 187, 223, .16); }

.ledger-year {
  padding-top: 9px;
  color: var(--cyan-deep);
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  text-align: right;
}

.ledger-label {
  margin-bottom: 7px;
  color: var(--cyan-deep);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.ledger-entry h2 { margin-bottom: 10px; font-size: 2.25rem; }
.ledger-entry p:last-child { margin: 0; color: var(--ink-soft); font-size: .9rem; line-height: 1.65; }

.ledger-now {
  position: absolute;
  right: 34px;
  bottom: 24px;
  padding: 7px 10px;
  border-radius: 999px;
  color: white;
  background: var(--ink);
  font-size: .63rem;
  font-weight: 850;
  letter-spacing: .14em;
}

.signal-band {
  display: grid;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 70px 76px;
  border: 1px solid var(--line);
  border-radius: 30px;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  background: #fff;
  box-shadow: 0 26px 65px rgba(31, 91, 129, .08);
}

.signal-band h2 { margin-bottom: 0; font-size: clamp(2.6rem, 4.4vw, 4.5rem); }

.signal-notes { display: grid; align-content: center; gap: 0; }
.signal-notes blockquote {
  margin: 0;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  color: #193e62;
  font-family: var(--serif);
  font-size: 1.28rem;
  font-style: italic;
}
.signal-notes p { margin: 16px 0 0; color: #8390a4; font-size: .72rem; }

.comparison-section { padding-bottom: 80px; }
.comparison-frame { border-top: 1px solid var(--ink); }
.comparison-row {
  display: grid;
  min-height: 82px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: .65fr 1fr 1fr;
  align-items: center;
  gap: 32px;
}
.comparison-row > * { color: var(--ink-soft); font-size: .92rem; line-height: 1.55; }
.comparison-row strong { color: var(--ink); }
.comparison-row > *:last-child { color: #124e70; font-weight: 650; }
.comparison-head { min-height: 58px; padding: 15px 0; }
.comparison-head span { color: #7b899e; font-size: .7rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }

.alternative-workflow {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  align-items: center;
  gap: 82px;
}
.workflow-copy > p:not(.eyebrow) { color: var(--ink-soft); line-height: 1.7; }
.compact-steps { margin: 35px 0 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.compact-steps li { display: grid; padding: 20px 0; border-bottom: 1px solid var(--line); grid-template-columns: 50px 1fr; gap: 18px; }
.compact-steps li > span { color: var(--cyan-deep); font-family: var(--serif); }
.compact-steps strong { display: block; margin-bottom: 5px; font-family: var(--serif); font-size: 1.2rem; }
.compact-steps p { margin: 0; color: var(--ink-soft); font-size: .88rem; line-height: 1.55; }

.alternative-preview {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: white;
  box-shadow: 0 34px 80px rgba(31, 91, 129, .16);
  transform: rotate(.8deg);
}
.alternative-preview img { display: block; width: 100%; }
.alternative-preview figcaption { padding: 14px 19px; color: #75849b; font-size: .75rem; }

.alternative-privacy {
  display: grid;
  padding: 70px 78px;
  border-radius: 32px;
  grid-template-columns: 180px 1fr;
  align-items: center;
  gap: 66px;
  color: white;
  background:
    radial-gradient(circle at 8% 100%, rgba(18, 187, 223, .38), transparent 35%),
    var(--ink);
  box-shadow: 0 32px 80px rgba(8, 22, 66, .2);
}
.privacy-mark {
  color: transparent;
  font-family: var(--serif);
  font-size: 11rem;
  line-height: .8;
  -webkit-text-stroke: 1px rgba(255, 255, 255, .35);
}
.alternative-privacy .eyebrow { color: #6ddbf0; }
.alternative-privacy h2 { margin-bottom: 18px; font-size: clamp(2.7rem, 4.5vw, 4.8rem); }
.alternative-privacy p:not(.eyebrow) { color: #c9d5e4; line-height: 1.75; }
.alternative-privacy code { color: white; }
.alternative-privacy .text-link { color: #77def1; }

.alternative-faq { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; }
.faq-list { border-top: 1px solid var(--ink); }
.faq-list details { padding: 23px 0; border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; color: var(--ink); font-family: var(--serif); font-size: 1.25rem; font-weight: 600; }
.faq-list p { margin: 14px 0 0; color: var(--ink-soft); line-height: 1.7; }

.alternative-cta { max-width: 940px; padding-top: 150px; padding-bottom: 150px; text-align: center; }
.alternative-cta h2 { font-size: clamp(3.8rem, 7vw, 7rem); }
.alternative-cta .button { margin-top: 10px; }
.alternative-cta > p:last-child { margin: 19px 0 0; color: #7e8ca1; font-size: .78rem; }

@media (max-width: 900px) {
  nav { display: none; }
  .hero {
    padding-top: 50px;
    grid-template-columns: 1fr;
  }
  .hero-visual { width: min(500px, 100%); margin: 0 auto; }
  .section-heading,
  .feature-layout,
  .privacy-panel,
  .alternative-hero,
  .signal-band,
  .alternative-workflow,
  .alternative-faq { grid-template-columns: 1fr; }
  .feature-layout,
  .privacy-panel,
  .alternative-workflow { gap: 46px; }
  .alternative-hero { gap: 35px; }
  .year-ledger { width: min(560px, 100%); margin: 0 auto; }
  .signal-band { gap: 38px; }
  .privacy-panel { padding: 52px; }
  .alternative-privacy { grid-template-columns: 110px 1fr; gap: 36px; }
  .privacy-mark { font-size: 8rem; }
  .steps { grid-template-columns: 1fr; }
  .steps li,
  .steps li + li {
    min-height: auto;
    padding: 28px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .step-number { margin-bottom: 28px; }
  .policy-article { grid-template-columns: 1fr; }
  .policy-article nav { position: static; }
}

@media (max-width: 600px) {
  .page-orbit { right: -620px; }
  .site-header,
  .hero,
  .alternative-hero,
  .signal-band,
  .section,
  footer,
  .policy-main { width: min(100% - 30px, 1180px); }
  .site-header { padding-top: 18px; }
  .brand { font-size: .9rem; }
  .hero { min-height: auto; padding-bottom: 70px; gap: 45px; }
  .alternative-hero { min-height: auto; padding: 60px 0 85px; }
  .alternative-copy h1 { font-size: clamp(3.5rem, 17vw, 5rem); }
  .year-ledger { min-height: 500px; padding-right: 18px; padding-left: 34px; gap: 72px; }
  .ledger-line { left: 61px; }
  .ledger-entry { grid-template-columns: 66px 1fr; gap: 16px; }
  .ledger-entry::before { left: 19px; }
  .ledger-entry-old::after { left: 82px; }
  .ledger-entry h2 { font-size: 1.8rem; }
  .signal-band { padding: 38px 25px; }
  h1 { font-size: clamp(3.6rem, 18vw, 5rem); }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-visual { height: 520px; }
  .orbit-dot-one { right: 0; }
  .popup-card { right: 0; width: min(340px, calc(100% - 10px)); }
  .date-stamp { left: 0; width: 88px; height: 88px; }
  .section { padding: 76px 0; }
  .section-heading { margin-bottom: 30px; gap: 8px; }
  .feature-list li { grid-template-columns: 1fr; gap: 6px; }
  .privacy-panel { width: calc(100% - 20px); padding: 34px 24px; }
  .comparison-head { display: none; }
  .comparison-row { padding: 22px 0; grid-template-columns: 1fr; gap: 7px; }
  .comparison-row strong { margin-bottom: 7px; }
  .comparison-row span::before { display: block; margin-bottom: 3px; color: #8a96a9; font-size: .64rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; content: "Earlier approach"; }
  .comparison-row span:last-child::before { content: "Tweet Time Machine"; }
  .alternative-privacy { padding: 45px 27px; grid-template-columns: 1fr; gap: 24px; }
  .privacy-mark { font-size: 6rem; }
  .alternative-cta { padding-top: 100px; padding-bottom: 100px; }
  .note-panel { padding-top: 90px; padding-bottom: 90px; }
  footer { grid-template-columns: 1fr; }
  .footer-links { align-items: flex-start; flex-direction: column; gap: 12px; }
  .policy-main { padding-top: 65px; }
  .policy-header h1 { font-size: clamp(3.3rem, 17vw, 5.5rem); }
  .support-card { padding: 30px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { animation: none; }
}