/* =========================================================================
   序 · Sections
   01 Hero / 02 为什么 / 03 Plan 结构 / 04 场景 / 05 分享
   06 协作 / 07 计划种类 / 08 产品能力 / 09 未来 / 10 最终 CTA
   ========================================================================= */

/* ─────────────── 01 · Hero ─────────────── */
.hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(4.5rem, 11vw, 9rem));
  padding-bottom: clamp(4rem, 9vw, 7rem);
  text-align: center;
  overflow: hidden;
}

/* Hero background gradient animation */
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 70%);
  opacity: 0.3;
  pointer-events: none;
  animation: hero-glow-float 12s ease-in-out infinite alternate;
}

@keyframes hero-glow-float {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-40px, 30px) scale(1.15); }
}

.hero__head { display: flex; flex-direction: column; align-items: center; }

.hero__mark {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--fs-hero);
  line-height: 1;
  letter-spacing: .02em;
  margin-block: clamp(1.25rem, 3vw, 2.25rem) clamp(1.75rem, 4vw, 3rem);
  text-indent: .02em; /* 视觉居中补偿 */
  /* 「序」字专属：更长的入场，更从容的微缩放 */
  --reveal-y: 22px;
  --reveal-scale: 0.96;
  --reveal-dur: 1100ms;
  /* Floating animation */
  animation: hero-mark-float 8s ease-in-out infinite;
  text-shadow: 0 8px 32px rgba(162, 85, 58, 0.12);
}

@keyframes hero-mark-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero__slogan {
  font-family: var(--font-serif);
  font-size: clamp(1.1875rem, 2.6vw, 1.75rem);
  line-height: 1.75;
  letter-spacing: .06em;
  max-width: 22em;
}

.hero__lead {
  margin-top: var(--sp-4);
  max-width: 30em;
  color: var(--ink-2);
  font-size: var(--fs-lead);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .875rem;
  margin-top: var(--sp-5);
}

/* Enhanced button hover effects */
.hero__actions .btn--solid {
  position: relative;
  overflow: hidden;
}

.hero__actions .btn--solid::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.1) 100%);
  opacity: 0;
  transition: opacity var(--dur-2) var(--ease);
}

.hero__actions .btn--solid:hover::after {
  opacity: 1;
}

.hero__rule {
  width: min(100% - (var(--gutter) * 2), var(--w-page));
  height: 1px;
  margin: clamp(3.5rem, 8vw, 6rem) auto 0;
  background: linear-gradient(to right, transparent, var(--line-2) 20%, var(--line-2) 80%, transparent);
}

/* 计划预览卡 */
.preview {
  margin-top: clamp(3.5rem, 8vw, 6rem);
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow);
  text-align: left;
  transition: transform var(--dur-3) var(--ease),
              box-shadow var(--dur-3) var(--ease),
              border-color var(--dur-3) var(--ease);
  position: relative;
  overflow: hidden;
}

/* Preview card top accent line */
.preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-3) var(--ease);
}

.preview:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: var(--accent-line);
}

.preview:hover::before {
  transform: scaleX(1);
}

.preview__head {
  display: flex;
  align-items: baseline;
  gap: .875rem;
  padding-bottom: var(--sp-3);
  margin-bottom: .25rem;
  border-bottom: 1px solid var(--line);
}
.preview__label {
  font-size: var(--fs-micro);
  letter-spacing: var(--ls-wide);
  color: var(--ink-3);
}
.preview__title {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  letter-spacing: .04em;
}
.preview__date {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.tl--preview { padding-top: var(--sp-2); }
.tl--preview .tl__row { padding-block: .6rem; }
.tl--preview .tl__text { letter-spacing: .04em; }

.preview__foot {
  margin-top: var(--sp-3);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-mid);
  color: var(--ink-3);
}

/* ─────────────── 02 · 为什么需要「序」 ─────────────── */
.section--why { overflow: hidden; text-align: center; }
.section--why .time-rule { opacity: .35; }

.ghost-date {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-serif);
  font-size: clamp(9rem, 26vw, 20rem);
  line-height: 1;
  color: var(--ghost);
  letter-spacing: -.02em;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.section--why .container { position: relative; z-index: 1; }
.section--why .prose { margin-top: var(--sp-5); font-size: var(--fs-lead); }

/* ─────────────── 03 · 一份计划，可以容纳什么 ─────────────── */
.section--structure { text-align: center; }
.section--structure .section__head { margin-inline: auto; }

.plan {
  max-width: 880px;
  margin-inline: auto;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow);
  text-align: left;
  transition: transform var(--dur-2) var(--ease),
              border-color var(--dur-2) var(--ease),
              box-shadow var(--dur-2) var(--ease);
}
.plan:hover {
  transform: translateY(-3px);
  border-color: var(--line-2);
  box-shadow: 0 1px 2px rgba(27, 26, 23, .04), 0 18px 40px -18px rgba(27, 26, 23, .22);
}

.plan__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--line);
}
.plan__title {
  font-family: var(--font-serif);
  font-size: clamp(1.375rem, 2.6vw, 1.875rem);
  font-weight: 400;
  letter-spacing: .04em;
}
.plan__range {
  margin-top: .375rem;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.plan__people { display: flex; }
.plan__people .avatar + .avatar { margin-left: -8px; }

.plan-item {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 1.25rem;
  padding-block: clamp(1.1rem, 2.4vw, 1.6rem);
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur-2) var(--ease),
              padding-left var(--dur-2) var(--ease);
  position: relative;
}

/* Plan item hover effect */
.plan-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform var(--dur-2) var(--ease);
}

.plan-item:hover {
  background-color: var(--ghost);
  padding-left: var(--sp-1);
}

.plan-item:hover::before {
  transform: scaleY(1);
}
.plan-item__time {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
  padding-top: .2rem;
}
.plan-item__main {
  position: relative;
  padding-left: 1.25rem;
  border-left: 1px solid var(--line);
}
.plan-item__main::before {
  content: "";
  position: absolute;
  top: .75rem;
  left: -3px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--line-2);
}
.plan-item:first-child .plan-item__main::before { background: var(--accent); }

.plan-item__title {
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: .04em;
  line-height: 1.6;
}
.plan-item__desc {
  margin-top: .25rem;
  font-size: var(--fs-sm);
  color: var(--ink-2);
  line-height: 1.8;
}
.plan-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: .75rem;
}

/* Checklist */
.check { margin-top: .875rem; display: grid; gap: .375rem; }
.check__item {
  display: flex;
  align-items: center;
  gap: .625rem;
  font-size: var(--fs-sm);
  color: var(--ink-2);
}
.check__box {
  flex: none;
  width: 14px; height: 14px;
  border: 1px solid var(--line-2);
  border-radius: 3px;
  position: relative;
  transition: background-color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}
.check__item.is-done .check__box { background: var(--accent); border-color: var(--accent); }
.check__item.is-done .check__box::after {
  content: "";
  position: absolute;
  left: 3.5px; top: 1px;
  width: 4px; height: 7px;
  border: solid var(--paper);
  border-width: 0 1.2px 1.2px 0;
  transform: rotate(42deg);
}
.check__item.is-done { color: var(--ink-3); }

.plan-item__media {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-top: 1rem;
}
.plan-item__media .ph { width: min(200px, 45%); }
.plan-item__who { display: flex; }
.plan-item__who .avatar + .avatar { margin-left: -6px; }

.plan__foot {
  padding-top: var(--sp-4);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-mid);
  color: var(--ink-3);
  line-height: 1.9;
}

/* ─────────────── 04 · 从今天，到一程 ─────────────── */
.section--scenes { text-align: center; }
.section--scenes .section__head { margin-inline: auto; }

.scenes { border-top: 1px solid var(--line); text-align: left; }

.scene {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 22rem) minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: baseline;
  padding-block: clamp(2rem, 4.5vw, 3.25rem);
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur-2) var(--ease),
              padding-left var(--dur-2) var(--ease);
  position: relative;
}

/* Scene hover indicator */
.scene::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform var(--dur-2) var(--ease);
}

.scene:hover {
  background-color: var(--ghost);
  padding-left: var(--sp-2);
}

.scene:hover::before {
  transform: scaleY(1);
}
.scene__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--ink-3);
  letter-spacing: .08em;
}
.scene__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  letter-spacing: .04em;
  line-height: 1.4;
}
.scene__desc {
  margin-top: .375rem;
  font-size: var(--fs-sm);
  color: var(--ink-2);
}
.scene__list {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1.5rem;
  font-size: var(--fs-sm);
  color: var(--ink-2);
}
.scene__list li { position: relative; padding-left: .875rem; }
.scene__list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--ink-3);
}

/* ─────────────── 05 · 分享 ─────────────── */
.section--share { text-align: center; }
.section--share .section__head { margin-inline: auto; }

.share {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: stretch;
  max-width: 960px;
  margin-inline: auto;
  text-align: left;
}

.share__card {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: transform var(--dur-3) var(--ease),
              box-shadow var(--dur-3) var(--ease),
              border-color var(--dur-3) var(--ease);
  position: relative;
  overflow: hidden;
}

/* Share card accent top line */
.share__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-3) var(--ease);
}

.share__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: var(--accent-line);
}

.share__card:hover::before {
  transform: scaleX(1);
}
.share__brand {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1;
  margin-bottom: var(--sp-3);
}
.share__title {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.2vw, 1.625rem);
  letter-spacing: .04em;
}
.share__range {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.share__card .btn { margin-top: var(--sp-4); align-self: flex-start; }
.share__link {
  margin-top: auto;
  padding-top: var(--sp-4);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--ink-3);
  word-break: break-all;
}
.share__link-inner {
  padding-bottom: 2px;
  border-bottom: 1px solid var(--accent-line);
  color: var(--accent);
}

.share__live {
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: transform var(--dur-3) var(--ease),
              box-shadow var(--dur-3) var(--ease),
              border-color var(--dur-3) var(--ease);
  position: relative;
  overflow: hidden;
}

/* Live card bottom accent */
.share__live::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-3) var(--ease);
}

.share__live:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: var(--accent-line);
}

.share__live:hover::after {
  transform: scaleX(1);
}

.live__head {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-mid);
  color: var(--ink-3);
}
.live__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.8s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .35; transform: scale(.8); }
}
.live__stamp { margin-left: auto; font-family: var(--font-mono); }

.tl--live { padding-top: var(--sp-2); }
.tl--live .tl__row { padding-block: .8rem; }
.tl--live .tl__row.is-flash .tl__text,
.tl--live .tl__row.is-flash .tl__time { animation: flash var(--dur-4) var(--ease); }
@keyframes flash {
  0%   { color: var(--accent); }
  35%  { color: var(--accent); }
  100% { color: inherit; }
}
.tl--live .tl__row.is-flash .tl__dot::after {
  background: var(--accent);
  border-color: var(--accent);
  transition: background-color var(--dur-3) var(--ease), border-color var(--dur-3) var(--ease);
}

.live__foot {
  margin-top: auto;
  padding-top: var(--sp-4);
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-mid);
  color: var(--ink-3);
}

/* ─────────────── 06 · 协作 ─────────────── */
.section--collab { text-align: center; }
.section--collab .section__head { margin-inline: auto; }

.collab { max-width: 860px; margin-inline: auto; text-align: left; }

.feed { border-top: 1px solid var(--line); }
.feed__row {
  display: grid;
  grid-template-columns: 30px auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  padding-block: 1.125rem;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur-2) var(--ease),
              padding-left var(--dur-2) var(--ease);
  position: relative;
}

/* Feed row hover indicator */
.feed__row::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform var(--dur-2) var(--ease);
}

.feed__row:hover {
  background-color: var(--ghost);
  padding-left: var(--sp-2);
}

.feed__row:hover::before {
  transform: scaleY(1);
}
.feed__who { font-size: var(--fs-sm); font-weight: 500; letter-spacing: .04em; }
.feed__what { font-size: var(--fs-sm); color: var(--ink-2); }
.feed__what em { font-style: normal; color: var(--accent); }
.feed__time {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.caps {
  display: flex;
  flex-wrap: wrap;
  gap: .625rem;
  margin-top: var(--sp-5);
}
.caps li {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  height: 30px;
  padding: 0 .875rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: var(--fs-xs);
  color: var(--ink-2);
  letter-spacing: .06em;
}

/* ─────────────── 07 · 它不属于某一种计划 ─────────────── */
.section--kinds { text-align: center; }
.section--kinds .section__head { margin-inline: auto; }

.kinds {
  max-width: 720px;
  margin-inline: auto;
  border-top: 1px solid var(--line);
  text-align: left;
}
.kinds__row {
  display: flex;
  align-items: baseline;
  gap: clamp(1rem, 3vw, 2rem);
  padding-block: clamp(.875rem, 2vw, 1.125rem);
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur-2) var(--ease),
              padding-left var(--dur-2) var(--ease);
  position: relative;
}

/* Kinds row hover indicator */
.kinds__row::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform var(--dur-2) var(--ease);
}

.kinds__row:hover {
  background-color: var(--ghost);
  padding-left: var(--sp-2);
}

.kinds__row:hover::before {
  transform: scaleY(1);
}

.kinds__row:hover .kinds__name { color: var(--accent); }
.kinds__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--ink-3);
  letter-spacing: .08em;
}
.kinds__name {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  letter-spacing: .06em;
  transition: color var(--dur-2) var(--ease);
}
.kinds__row--more .kinds__name { color: var(--ink-3); }

.kinds__coda {
  margin-top: clamp(3.5rem, 8vw, 6rem);
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.8vw, 1.875rem);
  line-height: 2;
  letter-spacing: .06em;
}

/* ─────────────── 08 · 产品能力 ─────────────── */
.section--product { text-align: center; }
.section--product .section__head { margin-inline: auto; }

.grid-feature {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
}
.feature {
  display: flex;
  flex-direction: column;
  gap: .625rem;
  min-height: 230px;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: var(--paper);
  text-align: left;
  transition: background-color var(--dur-2) var(--ease),
              transform var(--dur-2) var(--ease);
  position: relative;
  overflow: hidden;
}

/* Feature card hover lift and accent */
.feature::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transition: transform var(--dur-3) var(--ease);
}

.feature:hover {
  background: var(--paper-2);
  transform: translateY(-2px);
}

.feature:hover::after {
  transform: scaleX(1);
}

.feature__glyph {
  color: var(--ink-2);
  transition: color var(--dur-2) var(--ease),
              transform var(--dur-2) var(--ease);
}

.feature:hover .feature__glyph {
  color: var(--accent);
  transform: scale(1.1);
}
.feature__glyph svg {
  width: 26px; height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.feature__name {
  margin-top: auto;
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--ink-3);
}
.feature__cn {
  font-family: var(--font-serif);
  font-size: clamp(1.0625rem, 1.6vw, 1.3125rem);
  letter-spacing: .05em;
  line-height: 1.7;
}

/* ─────────────── 09 · 未来 ─────────────── */
.section--future { text-align: center; }
.future-lines {
  margin-top: var(--sp-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .35rem;
  font-family: var(--font-serif);
  font-size: clamp(1.125rem, 2.4vw, 1.625rem);
  line-height: 2.1;
  letter-spacing: .08em;
  color: var(--ink-2);
}
.future-lines li {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  position: relative;
}
.future-lines li::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--accent);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--dur-3) var(--ease),
              transform var(--dur-3) var(--ease);
  transition-delay: calc(var(--reveal-delay, 0ms) + 260ms);
}
.future-lines li.is-in::before {
  opacity: .8;
  transform: translateX(0);
}
.future__coda {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  font-family: var(--font-serif);
  font-size: clamp(1.0625rem, 1.8vw, 1.25rem);
  letter-spacing: .06em;
  color: var(--ink);
}

/* ─────────────── 10 · 最终 CTA ─────────────── */
.section--start {
  text-align: center;
  padding-block: clamp(7rem, 18vw, 15rem);
  border-top: 1px solid var(--line);
}
.start__mark {
  font-family: var(--font-serif);
  font-size: var(--fs-start);
  line-height: 1.1;
  letter-spacing: .02em;
  margin-block: clamp(1rem, 2.5vw, 2rem) clamp(1.5rem, 3vw, 2.5rem);
}
.start__slogan {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  letter-spacing: .08em;
  color: var(--ink-2);
}
.start__actions { margin-top: clamp(2rem, 5vw, 3rem); }
.start__copy {
  margin-top: clamp(3.5rem, 9vw, 7rem);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wide);
  color: var(--ink-3);
}