/* ============================================================
   install.html — 安裝教學 / 一鍵安裝 subpage styles
   Depends on styles.css design tokens. All classes prefixed
   with `ins-` to avoid colliding with the main stylesheet.
   ============================================================ */

/* ------------------------------------------------------------
   Reveal animation (opt-in via <html class="ins-anim">,
   mirrors the has-anim pattern of the main site)
   ------------------------------------------------------------ */

.ins-reveal { opacity: 1; transform: none; }

.ins-anim:not(.reduced-motion) .ins-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}

.ins-anim:not(.reduced-motion) .ins-reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

/* ------------------------------------------------------------
   Topbar current-page marker
   ------------------------------------------------------------ */

.topbar-nav a.is-current {
  color: var(--accent);
  position: relative;
}

.topbar-nav a.is-current::after {
  background: var(--accent);
  border-radius: 2px;
  bottom: -6px;
  content: "";
  height: 2px;
  left: 0;
  position: absolute;
  right: 0;
}

/* ------------------------------------------------------------
   HERO — 一鍵安裝 quick download interface
   ------------------------------------------------------------ */

.ins-hero {
  padding: clamp(48px, 7vw, 96px) var(--gutter) clamp(56px, 7vw, 104px);
  position: relative;
}

.ins-hero-grid {
  align-items: start;
  display: grid;
  gap: clamp(32px, 4.5vw, 64px);
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  margin: 0 auto;
  max-width: var(--col);
}

.ins-hero-headline {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 72px);
  font-variation-settings: "opsz" 144, "SOFT" 40;
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.04;
  margin-top: 18px;
}

.ins-hero-lead {
  color: var(--ink-2);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.7;
  margin-top: 16px;
  max-width: 52ch;
}

/* Download card */

.ins-dl-card {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  box-shadow: 0 18px 44px rgba(42, 31, 26, 0.10);
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 28px;
  max-width: 560px;
  padding: clamp(20px, 2.6vw, 28px);
  position: relative;
  overflow: hidden;
}

.ins-dl-card::before {
  background: linear-gradient(90deg, var(--accent), var(--amber), var(--gold));
  content: "";
  height: 4px;
  inset: 0 0 auto 0;
  position: absolute;
}

.ins-dl-file {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.ins-dl-file-icon {
  align-items: center;
  background: var(--ink);
  border-radius: 10px;
  color: var(--paper);
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  height: 40px;
  justify-content: center;
  letter-spacing: 0.04em;
  width: 40px;
}

.ins-dl-file-name {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  word-break: break-all;
}

.ins-dl-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ins-dl-meta li {
  background: var(--surface-warm);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  padding: 5px 11px;
}

.ins-dl-actions {
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr);
}

.ins-dl-note {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* Copy address row */

.ins-copy-row {
  align-items: stretch;
  display: flex;
  gap: 8px;
}

.ins-copy-code {
  align-items: center;
  background: var(--cool);
  border-radius: 10px;
  color: var(--cool-soft);
  display: flex;
  flex: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  min-height: 40px;
  min-width: 0;
  overflow-x: auto;
  padding: 0 14px;
  white-space: nowrap;
}

.ins-copy-btn { flex-shrink: 0; }

/* Express panel (速通版) */

.ins-express {
  background: var(--cool);
  border-radius: 18px;
  box-shadow: 0 22px 48px rgba(26, 39, 66, 0.28);
  color: var(--cool-soft);
  display: grid;
  gap: 0;
  overflow: hidden;
  position: sticky;
  top: 96px;
}

.ins-express-head {
  align-items: center;
  border-bottom: 1px solid rgba(232, 234, 244, 0.14);
  display: flex;
  gap: 10px;
  justify-content: space-between;
  padding: 16px 20px;
}

.ins-express-title {
  align-items: center;
  display: flex;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  gap: 8px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ins-express-dot {
  animation: pulse 1.4s ease-in-out infinite;
  background: var(--gold);
  border-radius: 999px;
  box-shadow: 0 0 0 4px rgba(239, 194, 58, 0.18);
  display: inline-block;
  height: 8px;
  width: 8px;
}

.ins-express-tag {
  color: rgba(232, 234, 244, 0.6);
  font-family: var(--font-mono);
  font-size: 11px;
}

.ins-express-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: 8px 0;
}

.ins-express-list li {
  align-items: baseline;
  display: flex;
  gap: 14px;
  padding: 13px 20px;
}

.ins-express-list li + li { border-top: 1px dashed rgba(232, 234, 244, 0.12); }

.ins-express-num {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.ins-express-text {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}

.ins-express-text code {
  background: rgba(232, 234, 244, 0.12);
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 2px 6px;
}

.ins-express-foot {
  background: rgba(232, 234, 244, 0.06);
  border-top: 1px solid rgba(232, 234, 244, 0.14);
  padding: 14px 20px;
}

.ins-express-foot a {
  align-items: center;
  color: var(--gold);
  display: inline-flex;
  font-size: 13.5px;
  font-weight: 700;
  gap: 8px;
}

.ins-express-foot a:hover { color: #fff; }

/* ------------------------------------------------------------
   TUTORIAL — install timeline (signature element)
   ------------------------------------------------------------ */

.ins-steps {
  background: var(--bg-2);
  border-top: 1px solid var(--line);
}

.ins-timeline {
  display: grid;
  gap: 0;
  grid-template-columns: minmax(0, 1fr);
  margin: 0 auto;
  max-width: 880px;
  position: relative;
}

/* Rail */

.ins-timeline::before {
  background: var(--line-strong);
  bottom: 24px;
  content: "";
  left: 27px;
  position: absolute;
  top: 8px;
  width: 2px;
}

.ins-rail-fill {
  background: linear-gradient(180deg, var(--accent), var(--amber));
  border-radius: 2px;
  height: 0;
  left: 27px;
  position: absolute;
  top: 8px;
  width: 2px;
  z-index: 1;
}

.ins-anim.reduced-motion .ins-rail-fill { display: none; }

.ins-step {
  display: grid;
  gap: 18px clamp(20px, 3vw, 34px);
  grid-template-columns: 56px minmax(0, 1fr);
  padding: clamp(24px, 3.4vw, 40px) 0;
  position: relative;
}

.ins-step-marker {
  display: grid;
  gap: 8px;
  justify-items: center;
  position: relative;
  z-index: 2;
}

.ins-step-num {
  align-items: center;
  background: var(--surface);
  border: 2px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  height: 56px;
  justify-content: center;
  transition: background-color .25s ease, border-color .25s ease, color .25s ease;
  width: 56px;
}

.ins-step.is-done .ins-step-num {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.ins-step-body { display: grid; gap: 14px; grid-template-columns: minmax(0, 1fr); }

.ins-step-head { display: grid; gap: 8px; grid-template-columns: minmax(0, 1fr); }

.ins-step-time {
  background: var(--ink);
  border-radius: 4px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  justify-self: start;
  letter-spacing: 0.02em;
  padding: 4px 8px;
}

.ins-step.is-done .ins-step-time { background: var(--accent); }

.ins-step-title {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 30px);
  font-variation-settings: "opsz" 144, "SOFT" 40;
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

.ins-step-text {
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.7;
  max-width: 58ch;
}

.ins-step-text code,
.ins-detail-list code {
  background: var(--surface-warm);
  border: 1px solid var(--line);
  border-radius: 6px;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.86em;
  max-width: 100%;
  padding: 2px 7px;
  white-space: nowrap;
}

/* Detail bullet list inside a step */

.ins-detail-list {
  display: grid;
  gap: 9px;
  grid-template-columns: minmax(0, 1fr);
}

.ins-detail-list li {
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.65;
  padding-left: 22px;
  position: relative;
}

.ins-detail-list li::before {
  color: var(--accent);
  content: "▸";
  font-family: var(--font-mono);
  font-size: 12px;
  left: 0;
  position: absolute;
  top: 3px;
}

/* Per-OS split cards */

.ins-os-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ins-os-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr);
  padding: 14px 16px;
}

.ins-os-name {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.ins-os-card p {
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.65;
}

/* Callouts */

.ins-callout {
  border-radius: 12px;
  display: flex;
  gap: 12px;
  font-size: 14px;
  line-height: 1.65;
  padding: 14px 16px;
}

.ins-callout-mark {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding-top: 3px;
}

.ins-callout-warn {
  background: var(--warning-soft);
  border: 1px solid rgba(184, 116, 28, 0.35);
  color: var(--ink-2);
}

.ins-callout-warn .ins-callout-mark { color: var(--warning); }

.ins-callout-info {
  background: var(--cool-soft);
  border: 1px solid rgba(26, 39, 66, 0.18);
  color: var(--ink-2);
}

.ins-callout-info .ins-callout-mark { color: var(--cool); }

/* Copy row inside a step */

.ins-step .ins-copy-row { max-width: 460px; }

/* ------------------------------------------------------------
   Chrome UI mockups (pure CSS, no images)
   ------------------------------------------------------------ */

.ins-mock {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  box-shadow: 0 12px 30px rgba(42, 31, 26, 0.08);
  max-width: 560px;
  overflow: hidden;
}

.ins-mock-bar {
  align-items: center;
  background: var(--bg-3);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 10px;
  padding: 10px 14px;
}

.ins-mock-dots { display: flex; gap: 5px; }

.ins-mock-dots span {
  background: var(--line-strong);
  border-radius: 999px;
  display: block;
  height: 9px;
  width: 9px;
}

.ins-mock-url {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-2);
  display: flex;
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  gap: 8px;
  min-height: 30px;
  min-width: 0;
  overflow: hidden;
  padding: 0 14px;
  white-space: nowrap;
}

.ins-mock-url.is-focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(196, 66, 27, 0.14);
  color: var(--ink);
}

.ins-mock-caret {
  animation: ins-caret 1s steps(1) infinite;
  background: var(--accent);
  display: inline-block;
  height: 14px;
  width: 2px;
}

@keyframes ins-caret { 50% { opacity: 0; } }

.reduced-motion .ins-mock-caret { animation: none; }

.ins-mock-body { display: grid; gap: 0; grid-template-columns: minmax(0, 1fr); }

.ins-mock-row {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
  padding: 13px 16px;
}

.ins-mock-row + .ins-mock-row { border-top: 1px solid var(--line); }

.ins-mock-page-title {
  font-size: 14.5px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

/* toggle */

.ins-mock-toggle {
  align-items: center;
  display: inline-flex;
  gap: 9px;
  font-size: 12.5px;
  font-weight: 700;
}

.ins-mock-switch {
  background: var(--accent);
  border-radius: 999px;
  display: inline-block;
  height: 18px;
  position: relative;
  width: 34px;
}

.ins-mock-switch::after {
  background: #fff;
  border-radius: 999px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  content: "";
  height: 14px;
  position: absolute;
  right: 2px;
  top: 2px;
  width: 14px;
}

.ins-mock-switch.is-off { background: var(--line-strong); }

.ins-mock-switch.is-off::after { left: 2px; right: auto; }

/* buttons inside mock */

.ins-mock-btn {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--ink-2);
  font-size: 12.5px;
  font-weight: 700;
  padding: 7px 12px;
}

.ins-mock-btn.is-hot {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
  position: relative;
}

.ins-mock-btn-group { display: flex; flex-wrap: wrap; gap: 8px; }

.ins-mock-hint {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

/* extension card inside mock */

.ins-mock-ext {
  align-items: center;
  display: flex;
  gap: 12px;
  padding: 14px 16px;
}

.ins-mock-ext-icon {
  align-items: center;
  background: var(--accent);
  border-radius: 9px;
  color: #fff;
  display: inline-flex;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 900;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.ins-mock-ext-name { font-size: 13.5px; font-weight: 800; }

.ins-mock-ext-sub {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
}

.ins-mock-ext .ins-mock-switch { margin-left: auto; }

/* key cap */

.ins-key {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-bottom-width: 3px;
  border-radius: 7px;
  color: var(--ink-2);
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  padding: 4px 9px;
}

/* folder pick — do / don't */

.ins-folder-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 560px;
}

.ins-folder-card {
  background: var(--surface);
  border-radius: 12px;
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr);
  padding: 14px 16px;
}

.ins-folder-card.is-do { border: 2px solid var(--success); }
.ins-folder-card.is-dont { border: 2px solid var(--danger); }

.ins-folder-verdict {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.is-do .ins-folder-verdict { color: var(--success); }
.is-dont .ins-folder-verdict { color: var(--danger); }

.ins-folder-tree {
  display: grid;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.ins-folder-tree span { color: var(--ink-2); }
.ins-folder-tree .is-mark {
  background: var(--surface-warm);
  border-radius: 5px;
  color: var(--ink);
  justify-self: start;
  padding: 2px 7px;
}
.ins-folder-tree .is-dim { color: var(--soft); padding-left: 18px; }

.ins-folder-note {
  color: var(--ink-3);
  font-size: 12.5px;
  line-height: 1.55;
}

/* Completion node */

.ins-done {
  display: grid;
  gap: 18px clamp(20px, 3vw, 34px);
  grid-template-columns: 56px minmax(0, 1fr);
  padding: clamp(24px, 3.4vw, 40px) 0 8px;
  position: relative;
}

.ins-done-mark {
  align-items: center;
  background: var(--accent);
  border-radius: 999px;
  color: #fff;
  display: inline-flex;
  font-size: 20px;
  font-weight: 900;
  height: 56px;
  justify-content: center;
  position: relative;
  width: 56px;
  z-index: 2;
}

.ins-done-card {
  align-items: center;
  background: var(--ink);
  border-radius: 16px;
  color: var(--paper);
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  padding: 22px 26px;
}

.ins-done-live {
  align-items: center;
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  gap: 9px;
  letter-spacing: 0.05em;
}

.ins-done-live .ins-express-dot {
  background: var(--ember);
  box-shadow: 0 0 0 4px rgba(232, 92, 43, 0.25);
}

.ins-done-title {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 900;
  letter-spacing: -0.015em;
}

.ins-done-card .btn { margin-left: auto; }

/* ------------------------------------------------------------
   AFTER INSTALL — first-use steps (reuses .guide styles)
   ------------------------------------------------------------ */

.ins-use .guide { max-width: 720px; }

/* ------------------------------------------------------------
   FAQ
   ------------------------------------------------------------ */

.ins-faq { background: var(--bg); border-top: 1px solid var(--line); }

.ins-faq-list {
  display: grid;
  gap: 12px;
  margin: 0 auto;
  max-width: 880px;
}

.ins-faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color .18s ease;
}

.ins-faq-item[open] { border-color: var(--line-strong); }

.ins-faq-item summary {
  align-items: center;
  cursor: pointer;
  display: flex;
  gap: 14px;
  font-size: 15px;
  font-weight: 700;
  list-style: none;
  padding: 17px 20px;
}

.ins-faq-item summary::-webkit-details-marker { display: none; }

.ins-faq-q {
  color: var(--accent);
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.ins-faq-chevron {
  color: var(--ink-3);
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  margin-left: auto;
  transition: transform .2s ease;
}

.ins-faq-item[open] .ins-faq-chevron { transform: rotate(90deg); }

.ins-faq-body {
  border-top: 1px solid var(--line);
  color: var(--ink-2);
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr);
  font-size: 14.5px;
  line-height: 1.7;
  padding: 16px 20px 20px;
}

.ins-faq-body code {
  background: var(--surface-warm);
  border: 1px solid var(--line);
  border-radius: 6px;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.86em;
  max-width: 100%;
  padding: 2px 7px;
  white-space: nowrap;
}

/* ------------------------------------------------------------
   Final CTA band
   ------------------------------------------------------------ */

.ins-cta {
  background: var(--bg-2);
  border-top: 1px solid var(--line);
}

.ins-cta-card {
  align-items: center;
  background: var(--cool);
  border-radius: 20px;
  box-shadow: 0 22px 48px rgba(26, 39, 66, 0.28);
  color: var(--cool-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 20px 32px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--col);
  padding: clamp(28px, 4vw, 44px) clamp(24px, 3.5vw, 48px);
}

.ins-cta-text { display: grid; gap: 8px; grid-template-columns: minmax(0, 1fr); max-width: 52ch; }

.ins-cta-title {
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.ins-cta-sub { color: rgba(232, 234, 244, 0.75); font-size: 14.5px; line-height: 1.65; }

.ins-cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.ins-cta .btn-primary { background: var(--gold); color: var(--ink); }
.ins-cta .btn-primary:hover:not(:disabled) { background: #f6d260; color: var(--ink); }

.ins-cta .btn-ghost { border-color: rgba(232, 234, 244, 0.4); color: var(--cool-soft); }
.ins-cta .btn-ghost:hover:not(:disabled) {
  background: rgba(232, 234, 244, 0.1);
  border-color: rgba(232, 234, 244, 0.7);
}

/* ------------------------------------------------------------
   Responsive
   ------------------------------------------------------------ */

@media (max-width: 960px) {
  .ins-hero-grid { grid-template-columns: 1fr; }
  .ins-express { position: static; }
}

@media (max-width: 640px) {
  .ins-timeline::before,
  .ins-rail-fill { left: 19px; }

  .ins-step,
  .ins-done { grid-template-columns: 40px minmax(0, 1fr); gap: 14px; }

  .ins-step-num,
  .ins-done-mark { height: 40px; width: 40px; font-size: 14px; }

  .ins-os-grid,
  .ins-folder-grid { grid-template-columns: 1fr; }

  .ins-copy-row { flex-direction: column; }

  .ins-copy-code { min-height: 44px; }

  .ins-done-card .btn { margin-left: 0; }
}
