/* 跑步岛 · 首页专用样式 */

.dim { color: var(--ink-2); }
.brand { color: var(--brand-500); }
.kicker.brand { color: var(--brand-500); }

/* ── Hero ───────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 120px 0 160px;
  overflow: hidden;
}
.hero__glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 700px;
  background: radial-gradient(ellipse at center, rgba(255, 107, 74, 0.16) 0%, transparent 60%);
  pointer-events: none;
  filter: blur(20px);
}
.hero__inner { position: relative; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 12px;
  color: var(--ink-2);
  margin-bottom: 48px;
  white-space: nowrap;
}
.eyebrow__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-500);
  box-shadow: 0 0 0 4px rgba(255, 107, 74, 0.18);
}

.hero__h1 {
  font-size: clamp(44px, 7.6vw, 120px);
  line-height: 0.98;
  letter-spacing: -0.04em;
  font-weight: 500;
  margin: 0;
  color: var(--ink-0);
}

.hero__cta {
  margin-top: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.hero__meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 12px;
  border-left: 1px solid var(--line-2);
  font-size: 12px;
}
.hero__meta :first-child { color: var(--ink-2); }
.hero__meta :last-child  { color: var(--ink-3); }

/* ── Generic band ──────────────────────────────────── */
.band {
  padding: 120px 0;
  border-top: 1px solid var(--line-1);
}
.band--deep { background: var(--bg-0); padding: 160px 0; }

/* ── Two-column (story) ────────────────────────────── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.two-col__lead { position: sticky; top: 100px; }
.two-col__title {
  margin: 20px 0 0;
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--ink-0);
}
.two-col__prose {
  display: flex;
  flex-direction: column;
  gap: 56px;
}
.prose-block p {
  margin: 16px 0 0;
  color: var(--ink-1);
  font-size: 22px;
  line-height: 1.55;
  max-width: 460px;
}
.prose-block strong { color: var(--ink-0); font-weight: 500; }

/* ── Section label ─────────────────────────────────── */
.section-label { max-width: 720px; }
.section-label__title {
  margin: 14px 0 0;
  font-size: var(--t-display-s);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.1;
  color: var(--ink-0);
}
.section-label__sub {
  margin: 16px 0 0;
  color: var(--ink-2);
  font-size: 18px;
  line-height: 1.6;
  max-width: 560px;
}

/* ── Feature list ──────────────────────────────────── */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 80px 0 0;
  display: flex;
  flex-direction: column;
}
.feature-row {
  display: grid;
  grid-template-columns: 60px 280px 1fr 24px;
  gap: 24px;
  align-items: baseline;
  padding: 28px 0;
  border-top: 1px solid var(--line-1);
  transition: background .2s, padding .2s, margin .2s;
}
.feature-row:hover {
  background: rgba(255, 107, 74, 0.03);
  margin-left: -16px;
  margin-right: -16px;
  padding-left: 16px;
  padding-right: 16px;
  border-radius: var(--r-2);
}
.feature-row__n {
  color: var(--ink-3);
  font-size: 13px;
  transition: color .2s;
}
.feature-row:hover .feature-row__n { color: var(--brand-500); }
.feature-row__title {
  color: var(--ink-0);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.feature-row__desc {
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.55;
}
.feature-row__arrow {
  color: var(--ink-3);
  opacity: 0.3;
  transform: translateX(0);
  transition: opacity .2s, transform .2s;
}
.feature-row:hover .feature-row__arrow {
  opacity: 1;
  transform: translateX(4px);
}

/* ── Duo / room code ───────────────────────────────── */
.duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.duo__title {
  margin: 20px 0 0;
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink-0);
}
.duo__body {
  margin: 28px 0 0;
  color: var(--ink-2);
  font-size: 18px;
  line-height: 1.6;
  max-width: 460px;
}

.room-card {
  padding: 48px;
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r-4);
  position: relative;
  overflow: hidden;
}
.room-card__glow {
  position: absolute;
  top: -100px;
  right: -100px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(255, 107, 74, 0.16) 0%, transparent 60%);
  pointer-events: none;
}
.room-card > * { position: relative; }

.room-code {
  margin-top: 20px;
  display: flex;
  gap: 8px;
}
.room-code__cell {
  width: 56px;
  height: 72px;
  display: grid;
  place-items: center;
  font-size: 36px;
  font-weight: 500;
  font-family: var(--f-mono);
  letter-spacing: 0;
  background: var(--bg-3);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  color: var(--ink-0);
  animation: dropIn 0.4s var(--ease-out) both;
}
@keyframes dropIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.room-card__people {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.person {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line-1);
  border-radius: 12px;
}
.person__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-4);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  display: grid;
  place-items: center;
}
.person--accent .person__avatar { background: var(--brand-500); }
.person__info { flex: 1; }
.person__info > :first-child {
  color: var(--ink-0);
  font-size: 14px;
  font-weight: 500;
}
.person__pace {
  color: var(--ink-3);
  font-size: 11px;
  margin-top: 2px;
}
.person__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sea-glow);
  box-shadow: 0 0 0 3px rgba(92, 200, 230, 0.2);
  animation: pulse 1.6s ease-in-out infinite;
}
.person__dot--accent {
  background: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.2);
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

/* ── Phones row ────────────────────────────────────── */
.phone-row {
  margin-top: 80px;
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.iphone {
  width: 240px;
  height: 520px;
  background: #0A0F18;
  border-radius: 31px;
  padding: 8px;
  box-shadow:
    0 0 0 1.5px rgba(255, 255, 255, 0.08),
    0 30px 60px -20px rgba(0, 0, 0, 0.6),
    0 60px 120px -30px rgba(255, 107, 74, 0.08);
  position: relative;
  flex-shrink: 0;
}
.iphone__screen {
  width: 100%;
  height: 100%;
  border-radius: 24px;
  overflow: hidden;
  background: var(--bg-3);
  position: relative;
}
.iphone__island {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 74px;
  height: 20px;
  background: #000;
  border-radius: 999px;
  z-index: 10;
}

/* 真机截图 */
.iphone__shot {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: top center;
}

/* ── Run-screen content (inside iPhone 1, 2) ──────── */
.run-screen {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #0E1A2B 0%, #142235 60%, #1B2C42 100%);
  color: var(--ink-0);
  padding: 60px 18px 18px;
  display: flex;
  flex-direction: column;
}
.run-screen__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  opacity: 0.6;
  font-family: var(--f-mono);
  letter-spacing: 0.04em;
}
.run-screen__km {
  margin-top: 22px;
  font-size: 48px;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.run-screen__km span {
  font-size: 16px;
  color: rgba(244, 241, 235, 0.45);
  margin-left: 4px;
}
.run-screen__row {
  display: flex;
  gap: 16px;
  margin-top: 14px;
  font-size: 10px;
  opacity: 0.85;
}
.run-screen__row .dim { opacity: 0.55; font-family: var(--f-cn); }
.run-screen__route {
  flex: 1;
  margin-top: 14px;
  border-radius: 10px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
}
.run-screen__route svg { width: 100%; height: 100%; display: block; }
.route-grid line { stroke: rgba(255, 255, 255, 0.06); stroke-width: 0.5; }
.run-screen__duo {
  margin-top: 10px;
  padding: 10px 12px;
  background: rgba(255, 107, 74, 0.10);
  border: 1px solid rgba(255, 107, 74, 0.25);
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.run-screen__duo-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--brand-500);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.run-screen__duo-info {
  flex: 1;
  font-size: 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.run-screen__duo-info .dim { opacity: 0.55; }

/* ── History screen (iPhone 3) ─────────────────────── */
.history-screen {
  position: absolute;
  inset: 0;
  background: var(--bg-1);
  color: var(--ink-0);
  padding: 56px 16px 16px;
}
.history-screen__month {
  font-size: 16px;
  font-weight: 600;
  margin-top: 6px;
}
.history-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.history-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 11px;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: 8px;
  font-size: 11px;
}
.history-list li > :first-child { color: var(--ink-2); }
.history-list li > :last-child {
  display: flex;
  gap: 10px;
  align-items: baseline;
}
.history-list .mono { font-size: 13px; font-weight: 500; color: var(--ink-0); }
.history-list .mono.dim { font-size: 10px; color: var(--ink-3); font-weight: 400; }
.history-list small { font-size: 8px; color: var(--ink-3); margin-left: 2px; }
.history-list em { font-style: normal; font-size: 10px; }

/* ── Beta card ─────────────────────────────────────── */
.beta-card {
  padding: 64px 56px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-4);
  background: linear-gradient(135deg, var(--bg-2) 0%, var(--bg-1) 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.beta-card__title {
  margin: 14px 0 0;
  font-size: 32px;
  font-weight: 500;
  color: var(--ink-0);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.beta-card__sub {
  margin: 12px 0 0;
  color: var(--ink-2);
  font-size: 15px;
}

/* ── Final CTA ─────────────────────────────────────── */
.final-cta {
  padding: 160px 0 120px;
  text-align: center;
}
.final-cta__h {
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.0;
  color: var(--ink-0);
  margin: 0;
}
.final-cta__sub {
  margin: 24px 0 0;
  color: var(--ink-2);
  font-size: 18px;
}
.final-cta__btn {
  margin-top: 48px;
  display: flex;
  justify-content: center;
}

/* ── Media queries ─────────────────────────────────── */
@media (max-width: 880px) {
  .hero { padding: 80px 0 100px; }
  .band { padding: 80px 0; }
  .band--deep { padding: 96px 0; }

  .two-col,
  .duo {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .two-col__lead { position: static; }

  .feature-row {
    grid-template-columns: 48px 1fr;
    gap: 12px 16px;
    grid-template-areas:
      "n title"
      "n desc";
  }
  .feature-row__n    { grid-area: n; align-self: start; padding-top: 4px; }
  .feature-row__title { grid-area: title; font-size: 20px; }
  .feature-row__desc  { grid-area: desc; }
  .feature-row__arrow { display: none; }

  .beta-card { padding: 40px 24px; flex-direction: column; align-items: flex-start; }
  .room-card { padding: 32px 24px; }
  .room-code__cell { width: 44px; height: 56px; font-size: 28px; }

  .final-cta { padding: 96px 0 80px; }
}

@media (max-width: 480px) {
  .hero__h1 { font-size: clamp(40px, 11vw, 64px); }
  .room-code { gap: 6px; }
  .room-code__cell { width: 38px; height: 50px; font-size: 22px; }
  .eyebrow { font-size: 11px; padding: 5px 12px 5px 8px; }
  .phone-row { gap: 20px; }
  .iphone { width: 200px; height: 433px; }
}