*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
main { display: flex; flex-direction: column; }
body {
  background: var(--tts-paper);
  color: var(--tts-ink);
  font-family: var(--tts-font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }
ul { list-style: none; }

.tts-container { max-width: 1440px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 48px); }

/* Nav */
.tts-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--tts-paper);
  transition: border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}
.tts-nav.tts-nav-scrolled { border-bottom-color: var(--tts-line); }
.tts-nav-inner {
  max-width: 1440px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 48px);
  height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.tts-wordmark-mark {
  font-family: var(--tts-font-serif); font-size: 20px; font-weight: 600;
  letter-spacing: -0.01em; color: var(--tts-ink);
}
.tts-wordmark-flex { display: inline-flex; align-items: center; gap: 8px; }
.tts-logo-img {
  height: clamp(28px, 3.6vw, 40px); width: auto; display: block; border-radius: 12px;
  filter: drop-shadow(0 0 1px rgba(151, 91, 46, 0.55)) drop-shadow(0 1px 1px rgba(60, 44, 28, 0.38));
}
.tts-nav-links { display: flex; align-items: center; gap: 32px; }
.tts-nav-social { display: flex; align-items: center; gap: 12px; margin-left: 8px; }
.tts-nav-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; color: var(--tts-ink-muted);
  border-radius: 2px; transition: color 0.2s ease, background-color 0.2s ease;
}
.tts-nav-icon:hover { color: var(--tts-ink); background: var(--tts-ticket-soft); }
.tts-mobile-social {
  display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--tts-line-soft);
}
.tts-mobile-social-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--tts-font-sans); font-size: 14px; color: var(--tts-ink-muted);
  padding: 8px 12px; border: 1px solid var(--tts-line-soft); border-radius: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.tts-mobile-social-link:hover { color: var(--tts-ticket); border-color: var(--tts-ticket); }
.tts-nav-link {
  font-family: var(--tts-font-sans); font-size: 14px; color: var(--tts-ink-muted);
  transition: color 0.2s ease; padding: 4px 0; position: relative;
}
.tts-nav-link:hover, .tts-nav-link.tts-active { color: var(--tts-ink); }
.tts-nav-link.tts-active::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 1px; background: var(--tts-ticket);
}
.tts-nav-cta { margin-left: 8px; }
.tts-nav-toggle {
  display: none; width: 44px; height: 44px; align-items: center; justify-content: center;
  color: var(--tts-ink); border-radius: 2px;
}
.tts-nav-toggle:hover { background: var(--tts-ticket-soft); }
.tts-nav-toggle:focus-visible { outline: 2px solid var(--tts-ticket); outline-offset: 2px; }
.tts-mobile-menu {
  display: none; flex-direction: column; gap: 0;
  padding: 8px clamp(16px, 4vw, 48px) 24px;
  border-top: 1px solid var(--tts-line); background: var(--tts-paper);
}
.tts-mobile-menu.tts-mobile-open { display: flex; }
.tts-mobile-link {
  font-family: var(--tts-font-sans); font-size: 18px; color: var(--tts-ink);
  padding: 14px 0; border-bottom: 1px solid var(--tts-line-soft); transition: color 0.2s ease;
}
.tts-mobile-link:hover { color: var(--tts-ticket); }
.tts-mobile-cta-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 16px; gap: 12px;
}
.tts-mobile-cta { margin-top: 0; justify-content: center; }
.tts-mobile-social { display: flex; align-items: center; gap: 12px; }

/* Buttons */
.tts-btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px;
  font-family: var(--tts-font-sans); font-size: 15px; font-weight: 500;
  border-radius: 2px; transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  white-space: nowrap; min-height: 44px; justify-content: center;
}
.tts-btn:focus-visible { outline: 2px solid var(--tts-ticket); outline-offset: 2px; }
.tts-btn-primary { background: var(--tts-ticket); color: #fff; }
.tts-btn-primary:hover { background: var(--tts-ticket-dark); transform: translateY(-1px); }
.tts-btn-primary:active { transform: translateY(0); }
.tts-btn-dark { background: var(--tts-ink); color: var(--tts-paper); }
.tts-btn-dark:hover { background: #000; color: #fff; transform: translateY(-1px); }
.tts-btn-dark:active { transform: translateY(0); }
.tts-btn-outline { background: transparent; color: var(--tts-ink); border: 1px solid var(--tts-ink); }
.tts-btn-outline:hover { background: var(--tts-ink); color: var(--tts-paper); transform: translateY(-1px); }
.tts-btn-outline:active { transform: translateY(0); }
.tts-text-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--tts-font-sans); font-size: 15px; color: var(--tts-ink);
  text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px;
  transition: color 0.2s ease, gap 0.2s ease; padding: 12px 0;
}
.tts-text-link:hover { color: var(--tts-ticket); gap: 10px; }
.tts-text-link:focus-visible { outline: 2px solid var(--tts-ticket); outline-offset: 2px; }

/* Hero */
.tts-hero { padding-top: calc(64px + clamp(40px, 6vw, 80px)); padding-bottom: clamp(48px, 8vw, 96px); position: relative; }
.tts-hero-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 3vw, 48px); align-items: start;
}
.tts-hero-grid > * { min-width: 0; }
.tts-hero-rail { display: none; }
.tts-hero-vertical {
  font-family: var(--tts-font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.25em; text-transform: uppercase; color: var(--tts-ticket);
  writing-mode: vertical-rl; text-orientation: mixed; line-height: 48px;
  display: none;
}
.tts-hero-copy { padding-top: clamp(16px, 3vw, 32px); }
.tts-hero-copy, .tts-hero-shot { min-width: 0; }
.tts-hero-title {
  font-family: var(--tts-font-serif); font-size: clamp(36px, 5vw, 64px); font-weight: 600;
  line-height: 1.1; letter-spacing: -0.02em; color: var(--tts-ink);
  text-wrap: balance; word-break: keep-all; margin-bottom: 24px;
}
.tts-hero-lede {
  font-family: var(--tts-font-sans); font-size: clamp(15px, 1.6vw, 18px); line-height: 1.7;
  color: var(--tts-ink-muted); max-width: 480px; margin-bottom: 32px;
}
.tts-hero-actions {
  display: flex; align-items: center; justify-content: center; gap: clamp(48px, 7vw, 72px);
  width: 100%; flex-wrap: wrap;
}
.tts-hero-opensource {
  display: flex; flex-direction: column; align-items: center;
  padding: 10px 14px; background: var(--tts-paper-deep);
  border: 1px solid var(--tts-line-soft); border-radius: 4px;
  margin-top: 12px; text-align: center;
}
.tts-opensource-icons {
  display: flex; align-items: center; gap: 8px; margin-bottom: 4px;
}
.tts-opensource-icon-link {
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--tts-ticket); transition: color 0.2s ease;
}
.tts-opensource-icon-link:hover { color: var(--tts-ticket-dark); }
.tts-opensource-bold {
  font-family: var(--tts-font-sans); font-size: 13px; font-weight: 500; color: var(--tts-ink);
}
.tts-opensource-desc {
  font-family: var(--tts-font-sans); font-size: 12px; color: var(--tts-ink-muted);
}
.tts-opensource-link {
  color: var(--tts-ticket); text-decoration: underline;
  text-underline-offset: 2px; transition: color 0.2s ease;
}
.tts-opensource-link:hover { color: var(--tts-ticket-dark); }
.ck-peek-ground {
  display: flex;
  justify-content: center;
  gap: clamp(48px, 12vw, 140px);
  height: 74px;
  overflow: hidden;
  position: absolute;
  top: -74px;
  left: 0;
  right: 0;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}
.ck-peek-hachiware,
.ck-peek-usagi {
  width: 74px;
  position: relative;
  z-index: 1;
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
  transform: translateY(65%);
}
.ck-peek-usagi { transition-delay: 0.05s; }
.ck-peek-ground.active .ck-peek-hachiware { transform: translateY(-4%) translateX(-44px); }
.ck-peek-ground.active .ck-peek-usagi { transform: translateY(-4%) translateX(44px); }
.tts-hero-shot { display: flex; justify-content: flex-end; }
.tts-shot-frame {
  position: relative; background: var(--tts-paper-deep); border: 1px solid var(--tts-line);
  padding: 16px; max-width: 100%; width: 100%; overflow: visible;
}
.tts-shot-plain { padding: 12px; overflow: visible; }
.tts-shot-img { width: 60%; height: auto; display: block; margin: 0 auto; }

.tts-hero-meta {
  display: flex; align-items: center; gap: 16px;
  margin-top: clamp(32px, 5vw, 56px); padding-top: 20px; border-top: 1px solid var(--tts-line);
}
.tts-meta-item {
  font-family: var(--tts-font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--tts-ink-faint);
}
.tts-meta-sep { width: 4px; height: 4px; background: var(--tts-line); border-radius: 50%; }
.tts-scroll-hint { display: flex; align-items: center; gap: 16px; margin-top: clamp(40px, 6vw, 72px); }
.tts-scroll-hint-line { display: block; width: clamp(32px, 5vw, 64px); height: 1px; background: var(--tts-line); }
.tts-scroll-hint-label {
  font-family: var(--tts-font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--tts-ink-faint);
}

/* Sections */
.tts-section { padding: clamp(48px, 8vw, 120px) 0; border-top: 1px solid var(--tts-line); }
.tts-hero { order: 1; }
#section-watch { order: 2; }
#section-discover { order: 3; }
#section-library { order: 4; }
#section-detail { order: 5; }
#section-resource-search { order: 6; }
#section-search { order: 7; }
#section-privacy { order: 8; }
#section-faq { order: 9; }
#section-download { order: 10; }
.tts-footer { order: 11; }
.tts-chapter-section { padding-top: clamp(64px, 10vw, 144px); padding-bottom: clamp(48px, 7vw, 96px); }
.tts-chapter-section-search { padding-top: clamp(72px, 11vw, 160px); }
.tts-chapter-grid {
  display: grid; grid-template-columns: minmax(80px, 0.22fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 80px); align-items: start; max-width: 1080px; margin: 0 auto;
}
.tts-chapter-copy { max-width: 760px; padding-top: 10px; }
.tts-chapter-copy-with-char { position: relative; }
#section-watch .tts-chapter-copy-with-char { position: relative; }
.tts-chapter-kicker {
  display: block; margin-bottom: 14px; font-family: var(--tts-font-mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--tts-ticket);
}
.tts-chapter-heading {
  margin: 0 0 20px; font-family: var(--tts-font-serif); font-size: clamp(32px, 5vw, 64px);
  font-weight: 600; line-height: 1.1; color: var(--tts-ink); text-wrap: balance; word-break: keep-all;
}
.tts-chapter-body {
  max-width: 560px; margin: 0 0 24px; font-family: var(--tts-font-sans); font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.75; color: var(--tts-ink-muted);
}
.tts-chapter-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.tts-chapter-tags span {
  padding: 6px 10px; border: 1px solid var(--tts-line); border-radius: 2px;
  font-family: var(--tts-font-mono); font-size: 11px; color: var(--tts-ink-muted);
}
.tts-subsection { padding-top: clamp(8px, 2vw, 28px); border-top: 0; }
.tts-feature-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px); align-items: start;
}
.tts-feature-grid > * { min-width: 0; }
.tts-feature-text-first .tts-feature-text { order: 1; }
.tts-feature-text-first .tts-feature-shot { order: 2; }
.tts-feature-image-first .tts-feature-shot { order: 1; }
.tts-feature-image-first .tts-feature-text { order: 2; }
.tts-feature-text {
  display: grid; grid-template-columns: 80px 1fr;
  gap: clamp(16px, 2vw, 32px); align-items: start;
}
.tts-archive-num { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; position: relative; }
.tts-sticky-archive { position: sticky; top: 96px; }
.tts-archive-digit {
  font-family: var(--tts-font-serif); font-size: clamp(48px, 6vw, 80px); font-weight: 500;
  line-height: 1; color: var(--tts-ticket); letter-spacing: -0.02em;
}
.tts-archive-label {
  font-family: var(--tts-font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.25em; text-transform: uppercase; color: var(--tts-ink-muted);
}
.tts-archive-label-group { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.tts-archive-label-group .tts-archive-label::before { display: none; }
.tts-archive-cn { font-family: var(--tts-font-sans); font-size: 12px; line-height: 1.2; color: var(--tts-ticket); }
.tts-archive-label::before {
  content: ''; display: block; width: 24px; height: 1px;
  background: var(--tts-line); margin-bottom: 8px;
}
.tts-feature-copy { min-width: 0; padding-top: 12px; }
.tts-section-heading {
  font-family: var(--tts-font-serif); font-size: clamp(24px, 3vw, 40px); font-weight: 600;
  line-height: 1.2; letter-spacing: -0.01em; color: var(--tts-ink);
  text-wrap: balance; word-break: keep-all; margin-bottom: 20px;
}
.tts-section-body {
  font-family: var(--tts-font-sans); font-size: clamp(15px, 1.4vw, 17px); line-height: 1.75;
  color: var(--tts-ink-muted); margin-bottom: 24px; max-width: 480px;
}
.tts-section-note {
  max-width: 480px; margin: 18px 0 0; padding-top: 14px; border-top: 1px solid var(--tts-line-soft);
  font-family: var(--tts-font-sans); font-size: 12px; line-height: 1.7; color: var(--tts-ink-muted);
}
.tts-section-note strong { color: var(--tts-ink); font-weight: 600; }
.tts-feature-list { display: flex; flex-direction: column; gap: 10px; }
.tts-feature-list li {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--tts-font-sans); font-size: 14px; color: var(--tts-ink);
}
.tts-feature-list li i { color: var(--tts-ticket); flex-shrink: 0; }
.tts-feature-shot { display: flex; align-items: flex-start; }

/* Download */
.tts-download-section { padding: clamp(64px, 10vw, 120px) 0; }
.tts-download-card {
  max-width: 560px; margin: 0 auto; text-align: center;
  display: flex; flex-direction: column; align-items: center;
}
.tts-app-icon {
  width: 64px; height: 64px; border-radius: 12px; margin-bottom: 24px;
  image-rendering: -webkit-optimize-contrast;
}
.tts-download-heading {
  font-family: var(--tts-font-serif); font-size: clamp(28px, 3.5vw, 44px); font-weight: 600;
  line-height: 1.2; letter-spacing: -0.01em; color: var(--tts-ink);
  text-wrap: balance; word-break: keep-all; margin-bottom: 16px;
}
.tts-download-heading-flex { display: inline-flex; align-items: center; justify-content: center; gap: 10px; }
.tts-download-note {
  font-family: var(--tts-font-sans); font-size: 15px; line-height: 1.7;
  color: var(--tts-ink-muted); max-width: 440px; margin-bottom: 32px;
}
.tts-download-actions {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px;
  width: 100%; max-width: 560px; margin-bottom: 32px;
}
.tts-download-actions .tts-btn {
  width: 100%; min-width: 0; padding-left: 12px; padding-right: 12px;
}
.tts-download-meta {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap; justify-content: center;
}
.tts-early-access {
  width: 100%; max-width: 760px; margin: 8px auto 36px; padding: 26px 0 28px;
  display: grid; grid-template-columns: minmax(0, .9fr) minmax(280px, 1.1fr); gap: clamp(24px, 5vw, 56px);
  border-top: 1px solid var(--tts-line); border-bottom: 1px solid var(--tts-line);
  text-align: left;
}
.tts-early-access-meta {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 15px;
  color: var(--tts-ticket); font: 600 11px/1.3 var(--tts-font-mono); letter-spacing: .1em;
}
.tts-early-access-meta strong { color: var(--tts-ink-muted); font: 500 12px/1.4 var(--tts-font-sans); letter-spacing: 0; }
.tts-early-access-copy h3 {
  margin: 0 0 10px; color: var(--tts-ink); font: 600 clamp(22px, 3vw, 30px)/1.2 var(--tts-font-serif);
}
.tts-early-access-copy p { margin: 0; color: var(--tts-ink-muted); font: 14px/1.8 var(--tts-font-sans); }
.tts-invite-form { display: grid; gap: 12px; min-width: 0; }
.tts-invite-field { display: grid; gap: 6px; min-width: 0; }
.tts-invite-field > span { color: var(--tts-ink-muted); font: 600 12px/1.3 var(--tts-font-mono); }
.tts-invite-field input {
  width: 100%; min-height: 44px; box-sizing: border-box; padding: 10px 12px;
  border: 1px solid var(--tts-line); border-radius: 2px; background: rgba(255, 255, 255, .26);
  color: var(--tts-ink); font: 15px/1.4 var(--tts-font-sans); outline: none;
  transition: border-color .2s ease, background-color .2s ease;
}
.tts-invite-field input::placeholder { color: var(--tts-ink-faint); }
.tts-invite-field input:focus { border-color: var(--tts-ticket); background: rgba(255, 255, 255, .56); }
.tts-invite-field input[aria-invalid="true"] { border-color: var(--tts-destructive); }
.tts-invite-submit { width: 100%; min-height: 44px; justify-content: center; margin-top: 2px; }
.tts-invite-submit[disabled] { cursor: wait; opacity: .66; }
.tts-invite-status { min-height: 22px; margin: 0; color: var(--tts-ink-muted); font: 13px/1.6 var(--tts-font-sans); }
.tts-invite-status.is-success { color: #47715A; }
.tts-invite-status.is-error { color: var(--tts-destructive); }
.tts-invite-hint { margin: 0; color: var(--tts-ink-faint); font: 12px/1.7 var(--tts-font-sans); }
.tts-invite-hint a { color: var(--tts-ticket-dark); text-decoration: underline; text-underline-offset: 3px; }
.tts-invite-verify-page { min-height: 100vh; padding: clamp(72px, 12vw, 144px) 0 64px; }
.tts-invite-verify-page .tts-container { max-width: 620px; }
.tts-invite-verify-mark { color: var(--tts-ticket); font: 600 12px/1.2 var(--tts-font-mono); letter-spacing: .2em; text-transform: uppercase; }
.tts-invite-verify-rule { width: 100%; height: 1px; margin: 20px 0 32px; background: var(--tts-line); }
.tts-invite-verify-kicker { margin: 0 0 14px; color: var(--tts-ink-faint); font: 500 11px/1.3 var(--tts-font-mono); letter-spacing: .14em; }
.tts-invite-verify-heading { margin: 0 0 16px; color: var(--tts-ink); font: 600 clamp(32px, 6vw, 54px)/1.12 var(--tts-font-serif); }
.tts-invite-verify-message { max-width: 520px; margin: 0 0 28px; color: var(--tts-ink-muted); font: 16px/1.8 var(--tts-font-sans); }
.tts-invite-code { display: grid; gap: 9px; margin: 0 0 28px; padding: 18px 20px; border-left: 4px solid var(--tts-ticket); background: var(--tts-paper-deep); }
.tts-invite-code span { color: var(--tts-ink-muted); font: 500 11px/1.3 var(--tts-font-mono); letter-spacing: .15em; }
.tts-invite-code strong { color: var(--tts-ink); font: 700 24px/1.2 var(--tts-font-mono); letter-spacing: .12em; overflow-wrap: anywhere; }
.tts-invite-verify-footer { margin: 28px 0 0; color: var(--tts-ink-faint); font: 13px/1.7 var(--tts-font-sans); }

/* Footer */
.tts-footer { padding: clamp(40px, 5vw, 64px) 0 32px; }
.tts-footer-grid {
  display: flex; justify-content: center; align-items: flex-start;
  gap: 32px; flex-wrap: wrap; margin-bottom: 32px;
}
.tts-footer-brand { display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; width: 100%; }
.tts-footer-promise { font-family: var(--tts-font-sans); font-size: 12px; color: var(--tts-ink-faint); text-align: center; }
.tts-wordmark-footer { font-size: 23px; }
.tts-wordmark-footer .tts-logo-img { height: clamp(36px, 4.7vw, 52px); }
.tts-footer-tagline { font-family: var(--tts-font-sans); font-size: 13px; color: var(--tts-ink-muted); text-align: center; width: 100%; line-height: 1.5; }
.tts-footer-links { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.tts-footer-line { display: inline-flex; align-items: center; gap: 6px; }
.tts-footer-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--tts-font-sans); font-size: 13px; color: var(--tts-ink-muted);
  text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px;
  transition: color 0.2s ease;
}
.tts-footer-link:hover { color: var(--tts-ticket); }
.tts-footer-link:focus-visible { outline: 2px solid var(--tts-ticket); outline-offset: 2px; }
.tts-footer-text { font-family: var(--tts-font-sans); font-size: 13px; color: var(--tts-ink-faint); }
.tts-footer-sep { width: 1px; height: 12px; background: var(--tts-line); }
.tts-footer-bottom {
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

/* ===== PRIVACY SECTION ===== */
.tts-privacy-layout {
  max-width: 1040px;
  margin: 0 auto;
}
.tts-privacy-header {
  display: flex;
  align-items: flex-start;
  gap: clamp(24px, 3vw, 48px);
  margin-bottom: clamp(24px, 3vw, 40px);
}
.tts-privacy-header .tts-archive-num { flex-shrink: 0; }
.tts-privacy-header .tts-archive-digit {
  font-family: var(--tts-font-serif); font-size: clamp(48px, 6vw, 80px); font-weight: 500;
  line-height: 1; color: var(--tts-ticket); letter-spacing: -0.02em;
}
.tts-privacy-header .tts-archive-label {
  font-family: var(--tts-font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.25em; text-transform: uppercase; color: var(--tts-ink-muted);
}
.tts-privacy-header .tts-archive-label::before {
  content: ''; display: block; width: 24px; height: 1px;
  background: var(--tts-line); margin-bottom: 8px;
}
.tts-privacy-copy { flex: 1; min-width: 0; padding-top: 12px; }

/* Checklist */
.tts-privacy-checklist {
  display: flex; gap: clamp(24px, 3vw, 48px); flex-wrap: wrap;
}
.tts-privacy-checklist-col {
  flex: 1; min-width: 200px;
}
.tts-privacy-checklist-title {
  font-family: var(--tts-font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase; color: var(--tts-ink-muted);
  margin-bottom: 12px; padding-bottom: 8px;
  border-bottom: 1px solid var(--tts-line-soft);
}
.tts-privacy-checklist-list {
  display: flex; flex-direction: column; gap: 8px;
}
.tts-privacy-checklist-list li {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--tts-font-sans); font-size: 14px; color: var(--tts-ink);
}
.tts-privacy-check { color: var(--tts-ticket); font-weight: 600; font-size: 14px; flex-shrink: 0; }
.tts-privacy-cross { color: var(--tts-ink-faint); font-size: 14px; flex-shrink: 0; }

/* Data Flow Diagram */
.tts-privacy-flow {
  margin-top: clamp(32px, 5vw, 48px); padding-top: clamp(24px, 3vw, 40px);
}
.tts-privacy-flow-label {
  font-family: var(--tts-font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--tts-ink-muted);
  margin-bottom: 16px;
}
.tts-privacy-flow-diagram {
  background: var(--tts-paper-deep); border: 1px solid var(--tts-line-soft);
  border-radius: 4px; padding: clamp(16px, 3vw, 32px); text-align: center;
}
.tts-flow-row {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; margin-bottom: 6px; flex-wrap: wrap;
}
.tts-flow-row-down {
  flex-direction: column; gap: 0; margin-bottom: 4px;
}
.tts-flow-node {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 6px 12px; border-radius: 4px;
  font-family: var(--tts-font-sans); font-size: 13px; font-weight: 500;
  white-space: nowrap; box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.tts-flow-device { background: var(--tts-ticket); color: #fff; }
.tts-flow-local { background: var(--tts-ink); color: var(--tts-paper); }
.tts-flow-cloud { background: var(--tts-ticket-soft); color: var(--tts-ticket-dark); border: 1px solid rgba(217,85,50,0.2); }
.tts-flow-safe { background: var(--tts-paper-deep); color: var(--tts-ink-muted); border: 1px solid var(--tts-line-soft); }
.tts-flow-stage-grid { display: grid; grid-template-columns: minmax(0, 1fr) 92px minmax(0, 1.35fr); gap: 14px; align-items: stretch; }
.tts-flow-stage {
  display: flex; flex-direction: column; gap: 8px; min-width: 0; padding: 14px;
  border: 1px solid var(--tts-line-soft); background: rgba(255,255,255,0.22); text-align: left;
}
.tts-flow-stage-local { border-top: 3px solid var(--tts-ink); }
.tts-flow-stage-gateway { border-top: 3px solid var(--tts-ticket); }
.tts-flow-stage-label {
  display: block; margin-bottom: 2px; font-family: var(--tts-font-mono); font-size: 10px;
  letter-spacing: 0.12em; color: var(--tts-ink-muted); text-transform: uppercase;
}
.tts-flow-stage .tts-flow-node { display: block; white-space: normal; line-height: 1.45; box-shadow: none; }
.tts-flow-stage .tts-flow-node small { display: block; margin-top: 2px; font-size: 11px; font-weight: 400; opacity: 0.78; }
.tts-flow-stage-connector {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--tts-font-mono); font-size: 10px; line-height: 1.5; color: var(--tts-ink-faint); text-align: center;
}
.tts-flow-stage-connector i { color: var(--tts-ticket); }
.tts-flow-branch-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-top: 4px; }
.tts-flow-branch-grid .tts-flow-node { background: transparent; }
.tts-flow-public-row {
  display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap;
  margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--tts-line);
}
.tts-flow-public-row .tts-flow-stage-label { margin: 0 4px 0 0; }
.tts-flow-public-row .tts-flow-node { white-space: normal; }

/* Arrows */
.tts-flow-arrow-right {
  display: inline-block; width: 28px; height: 2px;
  background: var(--tts-line); position: relative; flex-shrink: 0;
}
.tts-flow-arrow-right::after {
  content: ''; position: absolute; right: -1px; top: 50%; transform: translateY(-50%);
  border-left: 7px solid var(--tts-line); border-top: 4px solid transparent; border-bottom: 4px solid transparent;
}
.tts-flow-arrow-down {
  display: flex; flex-direction: column; align-items: center; gap: 0; flex-shrink: 0;
}
.tts-flow-arrow-down::before {
  content: ''; display: block; width: 2px; height: 20px; background: var(--tts-line);
}
.tts-flow-arrow-down::after {
  content: ''; border-top: 7px solid var(--tts-line); border-left: 5px solid transparent; border-right: 5px solid transparent;
}
.tts-flow-divider {
  font-family: var(--tts-font-mono); font-size: 11px; color: var(--tts-ink-faint);
  letter-spacing: 0.05em; margin: 4px 0;
}

/* Legend */
.tts-privacy-flow-legend {
  display: flex; gap: 16px; justify-content: center; margin-top: 16px; flex-wrap: wrap;
}
.tts-privacy-legend-item {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--tts-font-sans); font-size: 12px; color: var(--tts-ink-muted);
}
.tts-privacy-legend-dot {
  width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0;
}
.tts-legend-local { background: var(--tts-ink); }
.tts-legend-cloud { background: var(--tts-ticket); }
.tts-legend-safe { background: var(--tts-line); }

/* Badges */
.tts-privacy-badges {
  display: flex; gap: 12px; flex-wrap: wrap;
  justify-content: center;
  margin-top: clamp(24px, 3vw, 40px);
}
.tts-privacy-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--tts-ticket-soft); border: 1px solid var(--tts-line-soft);
  border-radius: 2px; padding: 6px 14px;
  font-family: var(--tts-font-sans); font-size: 13px; color: var(--tts-ink);
}
.tts-privacy-badge-dot {
  width: 6px; height: 6px; background: var(--tts-ticket); border-radius: 50%; flex-shrink: 0;
}
.tts-security-boundary {
  margin-top: clamp(32px, 5vw, 56px); padding-top: clamp(24px, 3vw, 40px); border-top: 1px solid var(--tts-line);
}
.tts-security-steps { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 12px; align-items: stretch; }
.tts-security-steps > i,
.tts-security-steps > svg { align-self: center; color: var(--tts-ticket); }
.tts-security-step {
  display: flex; flex-direction: column; gap: 5px; padding: 14px; border: 1px solid var(--tts-line-soft);
  background: var(--tts-paper-deep); text-align: center;
}
.tts-security-step strong { font-family: var(--tts-font-serif); font-size: 17px; font-weight: 600; color: var(--tts-ink); }
.tts-security-step span, .tts-security-note { font-family: var(--tts-font-sans); font-size: 12px; line-height: 1.6; color: var(--tts-ink-muted); }
.tts-security-note { margin: 14px 0 0; max-width: 760px; }

/* Plain-language privacy layer */
.tts-privacy-tech-details {
  margin-top: 24px; border-top: 1px solid var(--tts-line-soft); border-bottom: 1px solid var(--tts-line-soft);
}
.tts-privacy-tech-details summary {
  display: flex; align-items: center; gap: 8px; min-height: 48px; cursor: pointer; list-style: none;
  font-family: var(--tts-font-mono); font-size: 11px; letter-spacing: 0.08em; color: var(--tts-ink-muted);
}
.tts-privacy-tech-details summary::-webkit-details-marker { display: none; }
.tts-privacy-tech-details summary svg:first-child { color: var(--tts-ticket); }
.tts-privacy-tech-chevron { margin-left: auto; transition: transform 180ms ease; }
.tts-privacy-tech-details[open] .tts-privacy-tech-chevron { transform: rotate(180deg); }
.tts-privacy-tech-content { display: grid; gap: 8px; padding: 0 0 16px 24px; max-width: 820px; }
.tts-privacy-tech-content p {
  font-family: var(--tts-font-sans); font-size: 13px; line-height: 1.7; color: var(--tts-ink-muted);
}
.tts-privacy-tech-content strong { color: var(--tts-ink); font-weight: 600; }

/* FAQ */
.tts-faq-section { background: var(--tts-paper); }
.tts-faq-layout { max-width: 1040px; margin: 0 auto; }
.tts-faq-header {
  display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: start;
  gap: clamp(24px, 3vw, 48px); margin-bottom: clamp(28px, 4vw, 52px);
}
.tts-faq-heading-copy { min-width: 0; padding-top: 10px; }
.tts-faq-heading-copy .tts-section-heading { margin-bottom: 18px; }
.tts-faq-heading-copy .tts-section-body { max-width: 560px; }
.tts-faq-list { border-top: 0; }
.tts-faq-item { border-bottom: 1px solid var(--tts-line); }
.tts-faq-item summary {
  display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; align-items: center;
  gap: 16px; min-height: 76px; cursor: pointer; list-style: none;
}
.tts-faq-item summary::-webkit-details-marker { display: none; }
.tts-faq-item summary:focus-visible { outline: 2px solid var(--tts-ticket); outline-offset: -2px; }
.tts-faq-index {
  font-family: var(--tts-font-mono); font-size: 11px; letter-spacing: 0.12em;
  color: var(--tts-ticket); align-self: start; padding-top: 29px;
}
.tts-faq-question {
  min-width: 0; font-family: var(--tts-font-serif); font-size: clamp(18px, 2.2vw, 25px);
  font-weight: 600; line-height: 1.35; color: var(--tts-ink);
}
.tts-faq-icon { color: var(--tts-ticket); transition: transform 180ms ease; }
.tts-faq-item[open] .tts-faq-icon { transform: rotate(45deg); }
.tts-faq-answer {
  max-width: 820px; padding: 0 64px 28px; font-family: var(--tts-font-sans);
  font-size: 14px; line-height: 1.8; color: var(--tts-ink-muted);
}
.tts-faq-answer p + p { margin-top: 12px; }
.tts-faq-answer strong { color: var(--tts-ink); font-weight: 600; }
.tts-faq-more-trigger {
  display: inline-flex; align-items: center; gap: 5px; margin-left: 6px; padding: 0;
  border: 0; background: transparent; color: var(--tts-ticket-dark); font: inherit;
  font-weight: 600; line-height: inherit; vertical-align: baseline; cursor: pointer;
}
.tts-faq-more-trigger:focus-visible { outline: 2px solid var(--tts-ticket); outline-offset: 3px; }
.tts-faq-more-trigger [data-lucide] { transition: transform 180ms ease; }
.tts-faq-more-trigger[aria-expanded="true"] [data-lucide] { transform: rotate(180deg); }
.tts-faq-more-content { padding-top: 10px; }
.tts-faq-more-content[hidden] { display: none; }
.tts-faq-more-content p + p { margin-top: 12px; }
.tts-faq-more-content code {
  padding: 1px 4px; border: 1px solid var(--tts-line-soft); background: var(--tts-paper-deep);
  color: var(--tts-ink); font-family: var(--tts-font-mono); font-size: 0.9em;
}
.tts-faq-request-map {
  margin: 18px -64px 0;
  border: 1px solid var(--tts-line);
  background: var(--tts-paper-deep);
}
.tts-faq-request-map-header {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 12px 14px;
  border-bottom: 1px solid var(--tts-line); background: rgba(255,255,255,0.3);
}
.tts-faq-request-map-header span { color: var(--tts-ticket-dark); font-family: var(--tts-font-mono); font-size: 10px; letter-spacing: 0.12em; }
.tts-faq-request-map-header strong { color: var(--tts-ink); font-family: var(--tts-font-sans); font-size: 12px; font-weight: 600; text-align: right; }
.tts-faq-request-diagram { min-width: 0; overflow-x: auto; padding: 14px; background: var(--tts-paper); }
.tts-faq-mermaid { display: block; visibility: hidden; min-width: 680px; margin: 0; padding: 0; background: transparent; }
.tts-faq-mermaid.is-ready { visibility: visible; }
.tts-faq-mermaid svg { display: block; width: 100%; max-width: none; height: auto; min-height: 240px; }
.tts-faq-mermaid-fallback { margin: 0; padding: 14px; border-left: 2px solid var(--tts-ticket); background: var(--tts-paper-deep); color: var(--tts-ink-muted); font-size: 12px; line-height: 1.7; }
.tts-faq-request-map-foot { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px 18px; padding: 11px 14px; border-top: 1px solid var(--tts-line); color: var(--tts-ink-muted); font-size: 11px; line-height: 1.5; }
.tts-faq-request-map-foot b { color: var(--tts-ink); font-weight: 600; }
.tts-faq-breakdown {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 24px;
  margin: 14px 0 12px; padding: 14px 16px; border-left: 2px solid var(--tts-ticket);
  background: var(--tts-paper-deep);
}
.tts-faq-breakdown li { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 8px; min-width: 0; }
.tts-faq-breakdown strong { font-family: var(--tts-font-mono); font-size: 11px; color: var(--tts-ticket-dark); }
.tts-faq-breakdown span { min-width: 0; font-size: 12px; line-height: 1.6; }

/* Live data flow */
.tts-flow-summary {
  max-width: 720px; margin: -4px 0 0; font-family: var(--tts-font-sans); font-size: 14px;
  line-height: 1.7; color: var(--tts-ink-muted);
}
.tts-flow-more-trigger {
  display: inline-flex; align-items: center; gap: 5px; margin-left: 6px; padding: 0;
  border: 0; background: transparent; color: var(--tts-ticket-dark); font: inherit;
  font-weight: 600; line-height: inherit; vertical-align: baseline; cursor: pointer;
}
.tts-flow-more-trigger:focus-visible { outline: 2px solid var(--tts-ticket); outline-offset: 3px; }
.tts-flow-more-trigger [data-lucide] { transition: transform 180ms ease; }
.tts-flow-more-trigger[aria-expanded="true"] [data-lucide] { transform: rotate(180deg); }
.tts-live-flow-details { margin-top: 18px; }
.tts-live-flow-details[hidden] { display: none; }
.tts-flow-intro {
  max-width: 720px; margin: -4px 0 18px; font-family: var(--tts-font-sans); font-size: 14px;
  line-height: 1.7; color: var(--tts-ink-muted);
}
.tts-live-flow {
  overflow: hidden; border: 1px solid var(--tts-line-soft); background: rgba(255,255,255,0.28);
  border-radius: 4px; box-shadow: 0 8px 28px rgba(44, 39, 34, 0.06);
}
.tts-live-flow-toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 16px;
  border-bottom: 1px solid var(--tts-line-soft); background: rgba(255,255,255,0.34);
}
.tts-live-flow-state { display: flex; align-items: baseline; gap: 12px; min-width: 0; }
.tts-live-flow-kicker {
  flex-shrink: 0; font-family: var(--tts-font-mono); font-size: 10px; letter-spacing: 0.14em;
  color: var(--tts-ticket-dark); text-transform: uppercase;
}
.tts-live-flow-status {
  overflow: hidden; font-family: var(--tts-font-sans); font-size: 13px; color: var(--tts-ink-muted);
  text-overflow: ellipsis; white-space: nowrap;
}
.tts-live-flow-controls { display: flex; gap: 6px; flex-shrink: 0; }
.tts-flow-control {
  display: inline-flex; align-items: center; gap: 6px; min-height: 32px; padding: 6px 10px;
  border: 1px solid var(--tts-line-soft); border-radius: 2px; background: transparent; color: var(--tts-ink-muted);
  font-family: var(--tts-font-sans); font-size: 12px; cursor: pointer; transition: border-color 160ms ease, color 160ms ease, background 160ms ease;
}
.tts-flow-control:hover, .tts-flow-control:focus-visible { border-color: var(--tts-ticket); color: var(--tts-ticket-dark); background: var(--tts-ticket-soft); }
.tts-flow-control:focus-visible, .tts-flow-lane:focus-visible, .tts-privacy-tech-details summary:focus-visible { outline: 2px solid var(--tts-ticket); outline-offset: 3px; }
.tts-live-flow-stage { display: grid; grid-template-columns: 184px minmax(0, 1fr); gap: 18px; align-items: center; padding: 22px 18px 16px; }
.tts-flow-phone-wrap { display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--tts-ink-muted); text-align: center; }
.tts-flow-phone-wrap strong { font-family: var(--tts-font-serif); font-size: 17px; font-weight: 600; color: var(--tts-ink); }
.tts-flow-phone-wrap > span:last-child { font-family: var(--tts-font-sans); font-size: 11px; }
.tts-flow-phone {
  position: relative; width: 132px; aspect-ratio: 1440 / 3200; overflow: hidden; padding: 5px;
  border: 1px solid rgba(44,39,34,0.28); border-radius: 20px; background: var(--tts-ink); box-shadow: 0 10px 20px rgba(44,39,34,0.16);
}
.tts-flow-phone::after { content: ''; position: absolute; inset: 5px; border: 1px solid rgba(255,255,255,0.3); border-radius: 16px; pointer-events: none; }
.tts-flow-phone-tag {
  position: absolute; z-index: 1; top: 10px; left: 50%; transform: translateX(-50%); padding: 2px 6px;
  border-radius: 8px; background: #2C2722; color: #fff; font-family: var(--tts-font-mono); font-size: 7px; letter-spacing: 0.08em;
}
.tts-flow-phone-screen { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top; border-radius: 16px; }
.tts-live-flow-lanes { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.tts-flow-lane {
  display: grid; grid-template-columns: 26px minmax(0, 1fr); gap: 10px; width: 100%; padding: 10px 12px; border: 1px solid transparent;
  border-radius: 3px; background: rgba(255,255,255,0.24); color: var(--tts-ink); text-align: left; cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, opacity 180ms ease, transform 180ms ease;
}
.tts-flow-lane:hover { transform: translateX(2px); background: rgba(255,255,255,0.58); }
.tts-live-flow.is-focused .tts-flow-lane:not(.is-active) { opacity: 0.32; }
.tts-flow-lane.is-active { border-color: var(--flow-color, var(--tts-ticket)); background: rgba(255,255,255,0.72); box-shadow: inset 3px 0 0 var(--flow-color, var(--tts-ticket)); }
.tts-flow-lane[data-flow-key="local"] { --flow-color: var(--tts-ink); }
.tts-flow-lane[data-flow-key="douban-import"] { --flow-color: var(--tts-ticket-dark); }
.tts-flow-lane[data-flow-key="douban-writeback"] { --flow-color: #9B563C; }
.tts-flow-lane[data-flow-key="metadata"] { --flow-color: #3F607E; }
.tts-flow-lane[data-flow-key="search"] { --flow-color: #38654E; }
.tts-flow-lane[data-flow-key="feedback"] { --flow-color: #6F526A; }
.tts-flow-lane-index { padding-top: 2px; font-family: var(--tts-font-mono); font-size: 10px; color: var(--flow-color, var(--tts-ticket)); }
.tts-flow-lane-main { display: grid; gap: 6px; min-width: 0; }
.tts-flow-lane-heading { display: flex; align-items: center; gap: 8px; min-width: 0; }
.tts-flow-lane-heading strong { font-family: var(--tts-font-sans); font-size: 13px; font-weight: 600; }
.tts-flow-lane-heading em { padding: 2px 6px; border: 1px solid var(--tts-line-soft); border-radius: 10px; font-family: var(--tts-font-mono); font-size: 9px; font-style: normal; color: var(--tts-ink-muted); }
.tts-flow-track { display: block; min-width: 0; font-family: var(--tts-font-mono); font-size: 9px; color: var(--tts-ink-faint); }
.tts-flow-track > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tts-flow-route { display: grid; grid-template-columns: minmax(72px, .9fr) minmax(48px, 1fr) minmax(72px, .9fr) minmax(48px, 1fr) minmax(72px, .9fr); align-items: center; gap: 7px; min-width: 0; width: 100%; overflow: visible !important; }
.tts-flow-route-node { min-width: 0; overflow: hidden; padding: 3px 5px; border: 1px solid var(--tts-line-soft); border-radius: 2px; background: var(--tts-paper); color: var(--tts-ink-muted); text-overflow: ellipsis; white-space: nowrap; text-align: center; transition: border-color 180ms ease, background 180ms ease, color 180ms ease, transform 180ms ease; }
.tts-flow-route-device { border-color: var(--flow-color); color: var(--flow-color); }
.tts-flow-route-gateway { border-style: dashed; }
.tts-flow-lane.is-playing .tts-flow-route-node { border-color: color-mix(in srgb, var(--flow-color) 48%, var(--tts-line-soft)); }
.tts-flow-lane.is-playing .tts-flow-route-gateway { background: var(--tts-ticket-soft); color: var(--tts-ticket-dark); transform: translateY(-1px); }
.tts-flow-lane.is-done .tts-flow-route-node:last-child { border-color: var(--flow-color); color: var(--flow-color); background: color-mix(in srgb, var(--flow-color) 8%, var(--tts-paper)); }
.tts-flow-track-line { position: relative; display: block; height: 2px; min-width: 48px; background: var(--tts-line); }
.tts-flow-track-line::after { content: ''; position: absolute; right: -1px; top: 50%; width: 5px; height: 5px; border-top: 1px solid var(--flow-color); border-right: 1px solid var(--flow-color); transform: translateY(-50%) rotate(45deg); }
.tts-flow-packet {
  position: absolute; top: 50%; left: 0; z-index: 1; display: inline-flex; align-items: center; min-width: max-content; padding: 3px 6px;
  border-radius: 8px; background: var(--flow-color); color: #fff; font-family: var(--tts-font-sans); font-size: 9px; font-style: normal; font-weight: 600;
  opacity: 0; transform: translate(-50%, -50%); box-shadow: 0 2px 7px rgba(44,39,34,0.16);
}
.tts-flow-lane.is-playing .tts-flow-packet { animation: tts-flow-packet-travel 2.2s cubic-bezier(0.4, 0, 0.2, 1) both; }
.tts-flow-lane.is-done .tts-flow-packet { left: 100%; opacity: 1; }
.tts-flow-lane.is-playing .tts-flow-track-line { background: linear-gradient(90deg, var(--flow-color), var(--tts-line)); }
.tts-flow-lane.is-playing .tts-flow-lane-heading strong { color: var(--flow-color); }
.tts-flow-lane.is-paused .tts-flow-packet { animation-play-state: paused; }
.tts-flow-lane-note { font-family: var(--tts-font-sans); font-size: 10px; line-height: 1.45; color: var(--tts-ink-muted); }
.tts-flow-detail { margin: 0 18px 18px; padding: 14px 16px; border-left: 3px solid var(--tts-ticket); background: rgba(255,255,255,0.5); }
.tts-flow-detail-heading { display: flex; align-items: baseline; gap: 10px; margin-bottom: 5px; }
.tts-flow-detail-heading span { font-family: var(--tts-font-mono); font-size: 10px; letter-spacing: 0.12em; color: var(--tts-ink-muted); text-transform: uppercase; }
.tts-flow-detail-heading strong { font-family: var(--tts-font-serif); font-size: 18px; font-weight: 600; color: var(--tts-ink); }
.tts-flow-detail > p { margin: 0 0 10px; font-family: var(--tts-font-sans); font-size: 13px; line-height: 1.6; color: var(--tts-ink-muted); }
.tts-flow-detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.tts-flow-detail-grid span { display: grid; gap: 3px; min-width: 0; }
.tts-flow-detail-grid b { font-family: var(--tts-font-mono); font-size: 9px; color: var(--tts-ink-muted); font-weight: 500; }
.tts-flow-detail-grid i { overflow-wrap: anywhere; font-family: var(--tts-font-sans); font-size: 11px; font-style: normal; line-height: 1.45; color: var(--tts-ink); }
@keyframes tts-flow-packet-travel {
  0% { left: 0; opacity: 0; }
  12% { opacity: 1; }
  82% { opacity: 1; }
  100% { left: 100%; opacity: 0.92; }
}

/* Scroll reveal */— only active when JS adds .tts-anim */
.tts-anim .tts-reveal {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: calc(var(--reveal-delay, 0) * 100ms);
}
.tts-anim .tts-reveal.tts-visible { opacity: 1; transform: translateY(0); }
.tts-anim .tts-section {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.tts-anim .tts-section.tts-visible { opacity: 1; transform: translateY(0); }

/* Tablet */
@media (max-width: 1024px) {
  .tts-hero-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .tts-chapter-grid { grid-template-columns: 72px minmax(0, 1fr); gap: 24px; }
  .tts-feature-grid { grid-template-columns: 1fr; gap: 40px; }
  .tts-feature-text-first .tts-feature-text,
  .tts-feature-image-first .tts-feature-text,
  .tts-feature-text-first .tts-feature-shot,
  .tts-feature-image-first .tts-feature-shot { order: unset; }
  .tts-feature-image-first .tts-feature-shot { order: 0; }
  .tts-feature-text { grid-template-columns: 72px 1fr; }
  .tts-sticky-archive { position: static; }

  /* Privacy section tablet */
  .tts-privacy-header { flex-direction: column; gap: 12px; }
  .tts-privacy-copy { width: 100%; max-width: 100%; min-width: 0; padding-top: 0; }
}

/* Mobile */
@media (max-width: 768px) {
  .tts-hero, .tts-privacy-section { overflow-x: clip; }
  .tts-nav-links { display: none; }
  .tts-nav-toggle { display: flex; }
  .tts-hero-grid { width: 100%; grid-template-columns: 1fr; gap: 32px; }
  .tts-chapter-grid { grid-template-columns: 1fr; gap: 0; }
  .tts-chapter-copy { padding-top: 0; padding-right: 8px; }
  #section-resource-search .tts-chapter-copy { padding-right: 16px; }
  .tts-chapter-heading { font-size: clamp(28px, 7vw, 40px); }
  .tts-chapter-section { padding-top: 56px; padding-bottom: 44px; }
  .tts-chapter-section-search { padding-top: 64px; }
  .tts-chapter-tags span { font-size: 10px; }
  .tts-hero-rail { display: none; }
  .tts-hero-copy { padding-top: 0; }
  .tts-hero-copy, .tts-hero-shot, .tts-shot-frame { width: 100%; max-width: 100%; min-width: 0; box-sizing: border-box; }
  .tts-hero-title-row, .tts-hero-title { max-width: 100%; }
  .tts-hero-title { font-size: clamp(30px, 7vw, 44px); }
  .tts-hero-lede { width: 100%; max-width: 100%; overflow-wrap: anywhere; word-break: break-all; white-space: normal; }
  .tts-hero-actions { width: 100%; max-width: 100%; box-sizing: border-box; display: flex; flex-direction: row; align-items: center; gap: 16px; min-width: 0; }
  .tts-hero-actions .tts-btn,
  .tts-hero-actions .tts-text-link { justify-content: center; flex: 1 1 0; min-width: 0; }
  .tts-hero-actions .tts-text-link { white-space: normal; overflow: hidden; }
  .tts-hero-actions .tts-text-link span { min-width: 0; overflow-wrap: anywhere; }
  .tts-hero-actions .tts-btn span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .tts-hero-opensource { width: 100%; max-width: 100%; box-sizing: border-box; min-width: 0; }
  .tts-opensource-desc { overflow-wrap: anywhere; word-break: break-all; white-space: normal; }
  .tts-hero .tts-shot-frame { overflow: visible; }
  .tts-hero-opensource { max-width: 100%; }
  .ck-peek-ground { top: -60px; height: 60px; gap: clamp(40px, 18vw, 100px); }
  .ck-peek-hachiware,
  .ck-peek-usagi { width: 64px; transform: translateY(65%); }
  .ck-peek-hachiware { transform: translateY(calc(65% + 6px)); }
  .ck-peek-ground.active .ck-peek-hachiware { transform: translateY(calc(-6% + 6px)) translateX(-30px); }
  .ck-peek-ground.active .ck-peek-usagi { transform: translateY(-6%) translateX(30px); }
  .tts-hero-shot { justify-content: center; }
  .tts-feature-text { grid-template-columns: 1fr; gap: 0; min-width: 0; }
  .tts-feature-shot, .tts-shot-frame { width: 100%; max-width: 100%; min-width: 0; }
  .tts-feature-shot { overflow: clip; }
  .tts-shot-plain { overflow: clip; }
  .tts-section-heading-with-char { padding-right: clamp(84px, 24vw, 116px); }
  .tts-feature-list li { min-width: 0; overflow-wrap: anywhere; }
  .tts-archive-num { flex-direction: row; align-items: center; gap: 12px; margin-bottom: 20px; }
  .tts-archive-digit { font-size: 36px; }
  .tts-archive-label::before { display: none; }
  .tts-archive-label { font-size: 10px; }
  .tts-archive-label-group { gap: 3px; }
  .tts-archive-cn { font-size: 11px; }
  .tts-feature-copy { padding-top: 0; }
  .tts-section-body { max-width: 100%; }
  .tts-download-section { padding-bottom: 28px; }
  .tts-download-actions {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    width: 100%; max-width: 480px; gap: 12px; margin-bottom: 16px;
  }
  .tts-download-actions .tts-btn { width: min(100%, 280px); flex: 0 0 auto; }
  .tts-early-access { grid-template-columns: 1fr; gap: 22px; padding: 22px 0 24px; text-align: left; }
  .tts-early-access-copy h3 { font-size: 25px; }
  .tts-invite-form { width: 100%; }
  .tts-invite-verify-page { padding-top: 80px; }
  .tts-invite-verify-heading { font-size: clamp(32px, 10vw, 48px); }
  .tts-faq-header { grid-template-columns: 1fr; gap: 12px; margin-bottom: 28px; }
  .tts-faq-heading-copy { padding-top: 0; }
  .tts-faq-heading-copy .tts-section-heading { font-size: clamp(20px, 5vw, 28px); }
  .tts-faq-item summary { grid-template-columns: 24px minmax(0, 1fr) auto; gap: 2px; min-height: 68px; }
  .tts-faq-index { padding-top: 25px; font-size: 10px; }
  .tts-faq-question { font-size: clamp(13px, 3.6vw, 16px); }
  .tts-faq-answer { padding: 0 0 24px 0; font-size: 13px; }
  .tts-faq-more-content { padding-top: 8px; }
  .tts-faq-more-trigger { margin-left: 4px; }
  .tts-faq-request-map { margin: 14px 0 0; }
  .tts-faq-request-map-header { align-items: flex-start; flex-direction: column; gap: 5px; }
  .tts-faq-request-map-header strong { text-align: left; }
  .tts-faq-request-diagram { padding: 8px; }
  .tts-faq-mermaid { min-width: 620px; }
  .tts-faq-request-map-foot { grid-template-columns: 1fr; gap: 4px; padding: 10px 12px; }
  .tts-faq-breakdown { grid-template-columns: 1fr; gap: 8px; padding: 12px; }
  .tts-footer { padding-top: 20px; }
  .tts-footer-grid { flex-direction: column; gap: 20px; }
  .tts-footer-grid { margin-bottom: 12px; }
  .tts-footer-bottom { padding-top: 8px; }
  .tts-footer-links { flex-direction: column; align-items: center; text-align: center; gap: 8px; }
  .tts-footer-line { display: flex; justify-content: center; flex-direction: column; gap: 4px; }
  .tts-footer-sep { display: none; }
  .tts-shot-img { width: min(85%, 360px); max-width: 100%; }
  .tts-shot-plain .tts-shot-img { width: min(90%, 360px); max-width: 100%; }
  .ck-footer-theater { margin-top: -48px; margin-bottom: -16px; }
  .ck-footer-theater-img { width: 200px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .tts-anim .tts-reveal, .tts-anim .tts-section { opacity: 1; transform: none; transition: none; }
  .tts-flow-lane.is-playing .tts-flow-packet { animation: none; left: 100%; opacity: 1; }
  .tts-flow-lane.is-playing .tts-flow-route-gateway { transform: none; }
}

@media (max-width: 768px) {
  .tts-section, .tts-feature-shot, .tts-shot-frame { overflow-x: clip; }
  .tts-flow-summary { font-size: 13px; }
  .tts-flow-more-trigger { margin-left: 4px; }
  .tts-live-flow-details { margin-top: 14px; }
  .tts-live-flow-toolbar { align-items: center; flex-direction: row; gap: 12px; }
  .tts-live-flow-state { flex: 1; width: auto; align-items: flex-start; flex-direction: column; gap: 3px; }
  .tts-live-flow-status { white-space: normal; }
  .tts-live-flow-stage { grid-template-columns: 1fr; gap: 18px; padding: 18px 6px 12px; }
  .tts-flow-lane { padding-left: 8px; padding-right: 8px; }
  .tts-flow-phone { width: 112px; }
  .tts-flow-phone-wrap { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .tts-flow-phone-wrap strong, .tts-flow-phone-wrap > span:last-child { width: 100%; }
  .tts-flow-track, .tts-flow-lane-note { margin-left: -32px; width: calc(100% + 32px); }
  .tts-flow-route { grid-template-columns: max-content minmax(18px, 1fr) max-content minmax(18px, 1fr) max-content; gap: 4px; }
  .tts-flow-route { overflow: hidden !important; }
  .tts-flow-route-node { width: max-content; max-width: 100%; padding: 3px 5px; font-size: 8px; }
  .tts-flow-track-line { min-width: 18px; }
  .tts-flow-packet { min-width: max-content; max-width: none; padding: 2px 4px; font-size: 8px; line-height: 1.25; white-space: nowrap; text-align: center; }
  .tts-flow-lane-note { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 2px 10px; }
  .tts-flow-lane-note > span { min-width: 0; white-space: nowrap; }
  .tts-flow-note-send { text-align: left; }
  .tts-flow-note-process { text-align: right; }
  .tts-flow-note-return { grid-column: 1 / -1; text-align: center; }
  .tts-flow-detail { margin: 0 6px 12px; padding: 12px; }
  .tts-flow-detail-grid { grid-template-columns: 1fr; gap: 8px; }
}

a:focus-visible, button:focus-visible { outline: 2px solid var(--tts-ticket); outline-offset: 2px; }
::selection { background: var(--tts-ticket); color: #fff; }