/* ══════════════════════════════════════════════════════════
   Mosen 介绍站

   方向：把 iOS 首次相遇的「暖灰画布 + 记忆卡片 + 小狗」搬到网页。
   站点只借用参考的叙事密度和液态导航，不复制任何版式或视觉资产。
   ══════════════════════════════════════════════════════════ */

:root {
  color-scheme: light;

  /* 色彩 */
  --color-bg: #f3f1ec;
  --color-surface: #fbfaf7;
  --color-surface-raised: #ffffff;
  --color-ink: #141411;
  --color-muted: #68675f;
  --color-line: #dedbd3;
  --color-primary: #7b5944;
  --color-life: #e66320;
  --color-origin: #b88c38;
  --color-memory: #317d7a;
  --color-action: #bd4438;
  --color-soft-amber: #f7df9a;
  --color-soft-coral: #f4c2b9;
  --color-soft-teal: #b6dfd8;
  --color-night: #1d1d19;

  /* 字体 */
  --font-display: "MiSans VF", "MiSans", "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", system-ui, sans-serif;
  --font-body: "MiSans VF", "MiSans", "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  /* 尺寸 */
  --shell: 1180px;
  --radius-sm: 12px;
  --radius-md: 22px;
  --radius-lg: 34px;
  --radius-pill: 999px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* 动效 */
  --duration-fast: 160ms;
  --duration-base: 320ms;
  --duration-slow: 700ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.22, 1.35, 0.36, 1);

  --nav-height: 72px;
  --hairline: 1px;
  --shadow-card: 0 18px 42px rgba(40, 38, 30, 0.09);
  --shadow-phone: 0 34px 58px rgba(48, 43, 34, 0.20), 0 8px 17px rgba(48, 43, 34, 0.12);
}

[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #151613;
  --color-surface: #1d1f1a;
  --color-surface-raised: #242620;
  --color-ink: #f4f0e8;
  --color-muted: #aaa79c;
  --color-line: #383a32;
  --color-primary: #d2ae91;
  --color-life: #ff8750;
  --color-origin: #d7af58;
  --color-memory: #79bbb4;
  --color-action: #e58b80;
  --color-soft-amber: #5c4d25;
  --color-soft-coral: #60342e;
  --color-soft-teal: #2b5550;
  --color-night: #f4f0e8;
  --shadow-card: 0 18px 42px rgba(0, 0, 0, 0.27);
  --shadow-phone: 0 30px 65px rgba(0, 0, 0, 0.45), 0 8px 18px rgba(0, 0, 0, 0.24);
}

/* ── 基础 ─────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--duration-base) var(--ease-out), color var(--duration-base) var(--ease-out);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  opacity: 0.35;
  background-image: radial-gradient(rgba(23, 22, 17, 0.18) 0.55px, transparent 0.7px);
  background-size: 5px 5px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button { font: inherit; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { text-wrap: balance; }

.shell {
  width: min(100%, var(--shell));
  margin-inline: auto;
  padding-inline: 28px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: -80px;
  left: 20px;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--color-ink);
  color: var(--color-bg);
  text-decoration: none;
  transition: top var(--duration-fast) var(--ease-out);
}
.skip-link:focus { top: 20px; }

:focus-visible {
  outline: 3px solid var(--color-life);
  outline-offset: 4px;
  border-radius: 8px;
}

.shot-dark { display: none; }
[data-theme="dark"] .shot-light { display: none; }
[data-theme="dark"] .shot-dark { display: block; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow-dot,
.availability-dot {
  display: inline-block;
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-life);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-life) 14%, transparent);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 0.98rem;
  font-weight: 750;
  text-decoration: none;
  transition: transform var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out);
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }
.button-ink { background: var(--color-ink); color: var(--color-bg); box-shadow: 0 8px 16px color-mix(in srgb, var(--color-ink) 17%, transparent); }
.button-ink:hover { box-shadow: 0 13px 24px color-mix(in srgb, var(--color-ink) 22%, transparent); }
.button-light { background: #fffdf8; color: #191914; box-shadow: 0 10px 20px rgba(59, 27, 11, 0.15); }

/* ── 液态导航 ─────────────────────────────────────────── */

.site-header {
  position: fixed;
  z-index: 30;
  top: 0;
  left: 0;
  right: 0;
  pointer-events: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: var(--nav-height);
  margin-top: 16px;
  padding: 8px 10px 8px 13px;
  border: 1px solid color-mix(in srgb, var(--color-ink) 9%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-surface-raised) 66%, transparent);
  box-shadow: 0 10px 32px rgba(49, 47, 39, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(22px) saturate(145%);
  -webkit-backdrop-filter: blur(22px) saturate(145%);
  pointer-events: auto;
  transition: background-color var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}

.site-header.is-scrolled .site-nav {
  background: color-mix(in srgb, var(--color-surface-raised) 84%, transparent);
  box-shadow: 0 12px 34px rgba(49, 47, 39, 0.13), inset 0 1px 0 rgba(255, 255, 255, 0.64);
  transform: translateY(-2px);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--color-ink);
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
}
.brand { margin-right: auto; font-size: 1.04rem; letter-spacing: -0.025em; }
.brand-mark { overflow: hidden; width: 37px; height: 37px; border-radius: 12px; background: #fff; box-shadow: inset 0 0 0 1px rgba(16, 16, 13, 0.08); }
.brand-mark img { width: 100%; height: 100%; object-fit: cover; }

.nav-links { display: flex; align-items: center; gap: 3px; }
.nav-links a {
  min-height: 40px;
  padding: 0 13px;
  border-radius: var(--radius-pill);
  color: var(--color-muted);
  font-size: 0.84rem;
  font-weight: 650;
  line-height: 40px;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out);
}
.nav-links a:hover { background: color-mix(in srgb, var(--color-ink) 6%, transparent); color: var(--color-ink); }

.nav-actions { display: flex; align-items: center; gap: 7px; margin-left: 3px; }
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-width: 44px;
  min-height: 44px;
  padding: 0 11px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 700;
  transition: background-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.theme-toggle:hover { background: color-mix(in srgb, var(--color-ink) 6%, transparent); color: var(--color-ink); }
.theme-toggle-sun { width: 15px; height: 15px; border-radius: 50%; border: 2px solid currentColor; box-shadow: 0 0 0 3px color-mix(in srgb, currentColor 12%, transparent); }
[data-theme="dark"] .theme-toggle-sun { background: currentColor; box-shadow: inset -5px -2px 0 var(--color-surface-raised); }

.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 15px;
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  color: var(--color-bg);
  font-size: 0.82rem;
  font-weight: 780;
  text-decoration: none;
  transition: transform var(--duration-fast) var(--ease-out), opacity var(--duration-fast) var(--ease-out);
}
.download-link:hover { transform: scale(1.035); opacity: 0.88; }

/* ── Hero ─────────────────────────────────────────────── */

.hero {
  position: relative;
  min-height: min(840px, 100svh);
  padding-top: 148px;
  overflow: clip;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10vw 0;
  height: 170px;
  pointer-events: none;
  background: linear-gradient(to top, var(--color-bg), transparent);
}

.hero-aura {
  position: absolute;
  z-index: -1;
  width: min(80vw, 980px);
  height: min(80vw, 980px);
  right: -16vw;
  top: -12vw;
  border-radius: 50%;
  background:
    radial-gradient(circle at 44% 44%, color-mix(in srgb, var(--color-soft-amber) 78%, transparent), transparent 32%),
    radial-gradient(circle at 60% 58%, color-mix(in srgb, var(--color-soft-teal) 62%, transparent), transparent 53%),
    radial-gradient(circle at 38% 78%, color-mix(in srgb, var(--color-soft-coral) 60%, transparent), transparent 66%);
  filter: blur(12px);
  opacity: 0.86;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(410px, 1.08fr);
  align-items: center;
  min-height: 670px;
  gap: clamp(1rem, 2vw, 2.5rem);
}

.hero-copy { position: relative; z-index: 3; padding-bottom: 64px; }
.hero-copy h1 {
  max-width: none;
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: clamp(3.65rem, 6.4vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.07em;
  line-height: 1.06;
}
.title-line { display: block; white-space: nowrap; }
.title-underline { position: relative; z-index: 0; }
.title-underline::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -0.04em;
  right: -0.04em;
  bottom: 0.08em;
  height: 0.18em;
  border-radius: 99px;
  background: var(--color-life);
  transform: rotate(-2deg);
}
.hero-lead { max-width: 31rem; margin-top: 25px; color: var(--color-muted); font-size: clamp(1rem, 1.6vw, 1.15rem); line-height: 1.85; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; margin-top: 34px; }
.availability { display: inline-flex; align-items: center; gap: 9px; color: var(--color-muted); font-size: 0.82rem; font-weight: 650; }

.hero-stage {
  position: relative;
  align-self: stretch;
  min-height: 610px;
}
.app-orbit {
  position: absolute;
  z-index: 2;
  top: 65px;
  left: 8%;
  display: grid;
  place-items: center;
  width: 155px;
  height: 155px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-surface-raised) 35%, transparent);
  box-shadow: 0 22px 34px rgba(67, 55, 35, 0.10);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.app-orbit::before,
.app-orbit::after { content: ""; position: absolute; border-radius: 50%; }
.app-orbit::before { inset: 11px; border: 1px solid color-mix(in srgb, var(--color-ink) 10%, transparent); }
.app-orbit::after { width: 13px; height: 13px; right: 7px; top: 21px; background: var(--color-life); box-shadow: -117px 96px 0 -2px var(--color-memory); }
.app-orbit img { position: relative; z-index: 2; width: 82px; height: 82px; border-radius: 25px; box-shadow: 0 10px 18px rgba(36, 31, 18, 0.19); }
.app-orbit-ring { position: absolute; border: 1px solid color-mix(in srgb, var(--color-ink) 13%, transparent); border-radius: 50%; }
.app-orbit-ring-one { inset: -15px; border-style: dashed; }
.app-orbit-ring-two { inset: 22px; border-color: color-mix(in srgb, var(--color-life) 42%, transparent); }

.phone {
  position: relative;
  overflow: hidden;
  margin: 0;
  border: 6px solid #1b1c18;
  border-radius: 42px;
  background: #1b1c18;
  box-shadow: var(--shadow-phone);
}
.phone::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(255,255,255,0.24); border-radius: inherit; pointer-events: none; }
.phone-top { position: absolute; z-index: 2; top: 9px; left: 50%; width: 35%; height: 19px; transform: translateX(-50%); border-radius: var(--radius-pill); background: #191a17; }
.phone-screen { display: block; overflow: hidden; border-radius: 35px; background: #f7f7f7; }
.phone-screen img { width: 100%; }
.hero-phone { position: absolute; z-index: 1; right: 9%; bottom: -84px; width: min(42vw, 334px); transform: rotate(5deg); }
.hero-phone .phone-screen { border-radius: 35px; }

.memory-card {
  position: absolute;
  z-index: 3;
  display: grid;
  grid-template-columns: 30px 1fr;
  column-gap: 10px;
  width: 190px;
  padding: 12px 13px;
  border: 1px solid rgba(25, 24, 20, 0.06);
  border-radius: 19px;
  background: color-mix(in srgb, var(--color-surface-raised) 86%, transparent);
  box-shadow: 0 15px 25px rgba(56, 48, 32, 0.10), inset 0 1px 0 rgba(255, 255, 255, 0.74);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--color-ink);
  line-height: 1.25;
}
.memory-card strong { align-self: end; font-size: 0.8rem; letter-spacing: -0.02em; }
.memory-card small { grid-column: 2; margin-top: 3px; color: var(--color-muted); font-size: 0.66rem; font-weight: 600; }
.memory-icon { display: inline-grid; place-items: center; grid-row: span 2; width: 29px; height: 29px; border-radius: 10px; font-size: 0.95rem; font-weight: 800; }
.memory-icon-amber { background: var(--color-soft-amber); color: #78560b; }
.memory-icon-coral { background: var(--color-soft-coral); color: #8c2f24; }
.memory-icon-teal { background: var(--color-soft-teal); color: #17615d; }
.memory-card-one { top: 245px; left: 0; transform: rotate(-7deg); }
.memory-card-two { top: 73px; right: 0; transform: rotate(6deg); }
.memory-card-three { right: -2%; bottom: 99px; transform: rotate(-5deg); }

.hero-scroll-note { position: absolute; z-index: 5; right: max(28px, calc((100vw - var(--shell)) / 2 + 28px)); bottom: 39px; display: flex; align-items: center; gap: 10px; color: var(--color-muted); font-family: var(--font-mono); font-size: 0.58rem; font-weight: 700; letter-spacing: 0.12em; writing-mode: vertical-rl; }
.hero-scroll-note i { display: block; width: 1px; height: 56px; background: var(--color-muted); opacity: 0.65; }

/* 首次进入：一段模仿 App onboarding 的「卡片散开」编排。 */
.no-js .hero-copy,
.no-js .memory-card,
.no-js .app-orbit,
.no-js .hero-phone { opacity: 1; }
.js .hero-copy,
.js .memory-card,
.js .app-orbit,
.js .hero-phone { opacity: 0; }
.page-ready .hero-copy { animation: hero-copy-in 800ms var(--ease-out) 70ms forwards; }
.page-ready .app-orbit { animation: soft-pop 720ms var(--ease-spring) 350ms forwards; }
.page-ready .hero-phone { animation: phone-in 950ms var(--ease-spring) 170ms forwards; }
.page-ready .memory-card-one { animation: card-one-in 700ms var(--ease-spring) 590ms forwards; }
.page-ready .memory-card-two { animation: card-two-in 700ms var(--ease-spring) 690ms forwards; }
.page-ready .memory-card-three { animation: card-three-in 700ms var(--ease-spring) 785ms forwards; }
@keyframes hero-copy-in { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
@keyframes soft-pop { from { opacity: 0; transform: scale(0.66); } to { opacity: 1; transform: scale(1); } }
@keyframes phone-in { from { opacity: 0; transform: translate(28px, 56px) rotate(10deg) scale(0.86); } to { opacity: 1; transform: rotate(5deg); } }
@keyframes card-one-in { from { opacity: 0; transform: translate(106px, -70px) rotate(0) scale(0.55); } to { opacity: 1; transform: rotate(-7deg); } }
@keyframes card-two-in { from { opacity: 0; transform: translate(-112px, 95px) rotate(0) scale(0.55); } to { opacity: 1; transform: rotate(6deg); } }
@keyframes card-three-in { from { opacity: 0; transform: translate(-60px, -104px) rotate(0) scale(0.55); } to { opacity: 1; transform: rotate(-5deg); } }

/* ── 通用区块 ─────────────────────────────────────────── */

.section { padding-block: clamp(5.7rem, 10vw, 9rem); }
.section-heading h2,
.story-heading h2,
.mobile-heading h2,
.moods h2,
.feedback h2,
.try h2 {
  margin-top: 18px;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.064em;
  line-height: 1.12;
}

/* ── 先说出来 ─────────────────────────────────────────── */

.hello-layout { display: grid; grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr); gap: clamp(3rem, 10vw, 9.5rem); align-items: center; }
.section-heading > p:not(.eyebrow) { max-width: 29rem; margin-top: 25px; color: var(--color-muted); font-size: 1.04rem; line-height: 1.9; }
.speech-note { display: inline-flex; align-items: center; gap: 10px; margin-top: 31px; padding: 8px 15px 8px 8px; border: 1px solid var(--color-line); border-radius: var(--radius-pill); background: color-mix(in srgb, var(--color-surface-raised) 75%, transparent); box-shadow: 0 8px 17px rgba(40, 38, 30, 0.05); }
.speech-avatar { display: grid; place-items: center; width: 37px; height: 37px; }
.speech-avatar img { width: 41px; height: 41px; object-fit: contain; }
.speech-note p { font-size: 0.84rem; font-weight: 700; }

.prompt-board { position: relative; padding: clamp(1.45rem, 3vw, 2.5rem); border: 1px solid color-mix(in srgb, var(--color-ink) 9%, transparent); border-radius: var(--radius-lg); background: var(--color-surface-raised); box-shadow: var(--shadow-card); }
.prompt-board::before { content: ""; position: absolute; z-index: -1; width: 124px; height: 124px; right: -31px; top: -31px; border-radius: 50%; background: var(--color-soft-amber); filter: blur(2px); opacity: 0.72; }
.prompt-label { display: flex; align-items: center; gap: 8px; margin-bottom: 17px; color: var(--color-muted); font-family: var(--font-mono); font-size: 0.67rem; font-weight: 700; letter-spacing: 0.08em; }
.prompt-label span { width: 7px; height: 7px; border-radius: 50%; background: var(--color-memory); }
.prompt-line { display: grid; grid-template-columns: 31px 1fr; gap: 12px; padding: 15px 0; border-top: 1px solid var(--color-line); }
.prompt-line-featured { margin-inline: -9px; padding-inline: 9px; border: 0; border-radius: 16px; background: color-mix(in srgb, var(--color-soft-amber) 38%, transparent); }
.prompt-number { padding-top: 3px; color: var(--color-primary); font-family: var(--font-mono); font-size: 0.68rem; font-weight: 700; }
.prompt-line p { font-size: clamp(0.91rem, 1.4vw, 1.02rem); font-weight: 650; letter-spacing: -0.01em; line-height: 1.55; }
.prompt-tail { display: flex; align-items: center; gap: 8px; margin-top: 19px; color: var(--color-muted); font-size: 0.81rem; line-height: 1.55; }
.prompt-tail span { color: var(--color-life); font-size: 1rem; }

/* ── 做事方式 ─────────────────────────────────────────── */

.story { position: relative; border-top: 1px solid var(--color-line); }
.story-heading { max-width: 52rem; }
.story-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: clamp(3rem, 6vw, 5.2rem) 0 0; padding: 0; border-block: 1px solid var(--color-line); list-style: none; }
.story-step { position: relative; min-height: 360px; padding: 31px 28px 33px; border-right: 1px solid var(--color-line); }
.story-step:last-child { border-right: 0; }
.step-index { color: var(--color-muted); font-family: var(--font-mono); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.06em; }
.step-copy { position: relative; z-index: 2; margin-top: 64px; }
.step-kicker { color: var(--color-primary); font-size: 0.78rem; font-weight: 800; }
.step-copy h3 { margin-top: 10px; font-family: var(--font-display); font-size: clamp(1.6rem, 2.5vw, 2.12rem); font-weight: 800; letter-spacing: -0.052em; line-height: 1.25; }
.step-copy > p:last-child { max-width: 17rem; margin-top: 16px; color: var(--color-muted); font-size: 0.91rem; line-height: 1.75; }
.step-sticker { position: absolute; right: 12px; top: 28px; z-index: 0; display: block; width: 104px; filter: drop-shadow(0 11px 12px rgba(35, 28, 18, 0.10)); }
.step-sticker img { width: 100%; }
.step-sticker-listening { transform: rotate(4deg); }
.step-sticker-reviewing { transform: rotate(-5deg); }
.step-sticker-completed { transform: rotate(5deg); }

.promise-showcase { display: grid; grid-template-columns: minmax(0, 1fr) minmax(270px, 0.62fr); align-items: center; gap: clamp(2rem, 8vw, 7rem); margin-top: clamp(4.5rem, 10vw, 8rem); padding: clamp(2rem, 5vw, 4.5rem); border-radius: var(--radius-lg); background: color-mix(in srgb, var(--color-surface) 68%, var(--color-soft-teal)); overflow: hidden; }
.promise-copy { position: relative; }
.promise-sticker { position: absolute; top: -36px; right: -13px; width: 118px; transform: rotate(6deg); filter: drop-shadow(0 11px 12px rgba(35, 28, 18, 0.11)); }
.promise-copy h3 { margin-top: 15px; font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3.3rem); font-weight: 800; letter-spacing: -0.06em; line-height: 1.17; }
.promise-copy > p:not(.eyebrow):not(.promise-quote) { max-width: 27rem; margin-top: 21px; color: var(--color-muted); font-size: 1rem; line-height: 1.85; }
.promise-quote { margin-top: 25px; color: var(--color-memory); font-size: 0.95rem; font-weight: 780; }
.promise-phone { justify-self: center; width: min(100%, 265px); transform: rotate(5deg); }

/* ── 手机画廊 ─────────────────────────────────────────── */

.mobile { overflow: hidden; }
.mobile-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; }
.mobile-heading > p { max-width: 25rem; margin-bottom: 9px; color: var(--color-muted); font-size: 0.98rem; line-height: 1.8; }
.phone-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 2vw, 2rem); margin-top: clamp(3.5rem, 6vw, 5.5rem); }
.gallery-item { min-width: 0; margin: 0; }
.gallery-label { display: flex; align-items: flex-start; gap: 12px; min-height: 56px; margin-bottom: 22px; }
.gallery-label span { padding-top: 4px; color: var(--color-primary); font-family: var(--font-mono); font-size: 0.69rem; font-weight: 750; }
.gallery-label strong { font-family: var(--font-display); font-size: clamp(1.25rem, 2vw, 1.65rem); font-weight: 800; letter-spacing: -0.05em; line-height: 1.25; }
.gallery-phone-wrap { position: relative; min-height: 500px; padding: 20px 20px 0; border-radius: 38px 38px 0 0; overflow: hidden; }
.gallery-orb { position: absolute; width: 250px; height: 250px; top: 9px; left: 50%; border-radius: 50%; transform: translateX(-50%); filter: blur(1px); }
.gallery-orb-amber { background: var(--color-soft-amber); }
.gallery-orb-teal { background: var(--color-soft-teal); }
.gallery-orb-coral { background: var(--color-soft-coral); }
.gallery-pet { position: absolute; z-index: 2; width: 94px; filter: drop-shadow(0 11px 12px rgba(36, 31, 18, 0.12)); }
.gallery-pet img { width: 100%; }
.gallery-pet-chat { top: 11px; right: -6px; transform: rotate(5deg); }
.gallery-pet-calendar { top: 10px; left: -8px; transform: rotate(-8deg); }
.gallery-pet-inbox { top: 4px; right: -10px; transform: rotate(7deg); }
.gallery-phone { position: relative; z-index: 1; width: min(100%, 242px); margin-inline: auto; border-width: 5px; border-radius: 33px 33px 0 0; box-shadow: 0 18px 35px rgba(54, 41, 25, 0.18); }
.gallery-phone .phone-top { top: 7px; height: 15px; }
.gallery-phone .phone-screen { border-radius: 27px 27px 0 0; }

/* ── 表情跑马灯 ───────────────────────────────────────── */

.moods { padding-top: clamp(5rem, 9vw, 8rem); overflow: hidden; border-block: 1px solid color-mix(in srgb, var(--color-ink) 12%, transparent); background: var(--color-night); color: var(--color-bg); }
.moods .eyebrow { color: color-mix(in srgb, var(--color-bg) 66%, transparent); }
.moods h2 { max-width: 12ch; color: var(--color-bg); }
.marquee { display: flex; width: max-content; gap: 18px; margin-top: clamp(2.5rem, 5vw, 4rem); padding-bottom: clamp(3.5rem, 7vw, 6rem); animation: marquee 34s linear infinite; }
.marquee-track { display: flex; gap: 18px; margin: 0; padding: 0; list-style: none; }
.marquee-track li { flex: 0 0 auto; }
.ticker-card { position: relative; display: flex; flex-direction: column; justify-content: space-between; width: clamp(208px, 22vw, 282px); min-height: 154px; padding: 20px; border-radius: 24px; color: #1c1b17; box-shadow: 0 11px 18px rgba(0,0,0,0.22); transform: rotate(-3deg); }
.marquee-track li:nth-child(even) { transform: rotate(4deg); }
.ticker-card img { position: absolute; right: -8px; top: -21px; width: 86px; filter: drop-shadow(0 9px 9px rgba(23, 19, 13, 0.12)); }
.ticker-card span { font-family: var(--font-mono); font-size: 0.65rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
.ticker-card strong { max-width: 15ch; margin-top: 14px; font-family: var(--font-display); font-size: clamp(1.02rem, 1.6vw, 1.32rem); font-weight: 800; letter-spacing: -0.045em; line-height: 1.3; }
.ticker-card small { margin-top: 12px; font-size: 0.72rem; font-weight: 700; opacity: 0.68; }
.ticker-card-amber { background: var(--color-soft-amber); }
.ticker-card-teal { background: var(--color-soft-teal); }
.ticker-card-coral { background: var(--color-soft-coral); }
.ticker-card-paper { background: #fffdf8; }
@keyframes marquee { to { transform: translateX(calc(-50% - 9px)); } }

/* ── 官网反馈 ─────────────────────────────────────────── */

.feedback { border-bottom: 1px solid var(--color-line); background: var(--color-surface); }
.feedback-grid { display: grid; grid-template-columns: minmax(0, 0.84fr) minmax(380px, 0.96fr); align-items: start; gap: clamp(3rem, 10vw, 9rem); }
.feedback-copy { padding-top: 8px; }
.feedback-copy h2 { margin-top: 18px; max-width: 10ch; }
.feedback-copy > p:not(.eyebrow):not(.feedback-promise) { max-width: 28rem; margin-top: 24px; color: var(--color-muted); font-size: 1rem; line-height: 1.9; }
.feedback-promise { display: inline-flex; align-items: center; gap: 9px; margin-top: 25px; color: var(--color-primary); font-size: 0.9rem; font-weight: 750; }
.feedback-promise span { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--color-soft-amber); color: var(--color-ink); font-size: 0.78rem; }
.feedback-form { padding: clamp(1.35rem, 3.2vw, 2.2rem); border: 1px solid color-mix(in srgb, var(--color-ink) 11%, transparent); border-radius: var(--radius-md); background: var(--color-surface-raised); box-shadow: var(--shadow-card); }
.feedback-kinds { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; border: 0; }
.feedback-kinds legend { width: 100%; margin-bottom: 12px; color: var(--color-muted); font-size: 0.78rem; font-weight: 780; }
.feedback-kind { position: relative; display: inline-flex; min-height: 38px; align-items: center; padding: 0 13px; border: 1px solid var(--color-line); border-radius: var(--radius-pill); color: var(--color-muted); cursor: pointer; font-size: 0.82rem; font-weight: 720; transition: border-color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out); }
.feedback-kind:has(input:checked) { border-color: var(--color-ink); background: var(--color-ink); color: var(--color-bg); }
.feedback-kind input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.feedback-field { display: block; margin-top: 21px; }
.feedback-field > span { display: block; margin-bottom: 8px; color: var(--color-muted); font-size: 0.78rem; font-weight: 780; }
.feedback-field em { margin-left: 4px; color: color-mix(in srgb, var(--color-muted) 74%, transparent); font-size: 0.7rem; font-style: normal; font-weight: 650; }
.feedback-field textarea,
.feedback-field input { display: block; width: 100%; border: 1px solid var(--color-line); border-radius: 13px; outline: 0; color: var(--color-ink); background: color-mix(in srgb, var(--color-bg) 40%, var(--color-surface-raised)); font: inherit; font-size: 0.92rem; line-height: 1.65; transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out); }
.feedback-field textarea { min-height: 132px; padding: 12px 14px; resize: vertical; }
.feedback-field input { min-height: 47px; padding: 0 14px; }
.feedback-field textarea::placeholder,
.feedback-field input::placeholder { color: color-mix(in srgb, var(--color-muted) 68%, transparent); }
.feedback-field textarea:focus,
.feedback-field input:focus { border-color: var(--color-primary); background: var(--color-surface-raised); box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-soft-amber) 54%, transparent); }
.feedback-honeypot { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.feedback-submit-row { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 18px; margin-top: 25px; }
.feedback-submit-row .button { min-height: 50px; border: 0; cursor: pointer; }
.feedback-submit-row .button:disabled { cursor: wait; opacity: 0.6; transform: none; }
.feedback-status { min-height: 1.5em; flex: 1 1 13rem; color: var(--color-muted); font-size: 0.79rem; font-weight: 650; line-height: 1.55; }
.feedback-status.is-success { color: var(--color-memory); }
.feedback-status.is-error { color: var(--color-action); }
.feedback-note { max-width: 32rem; margin-top: 19px; color: var(--color-muted); font-size: 0.72rem; line-height: 1.7; }
.feedback-note a { color: inherit; text-decoration-color: color-mix(in srgb, currentColor 58%, transparent); text-underline-offset: 3px; }

/* ── CTA 与页脚 ───────────────────────────────────────── */

.try { position: relative; overflow: hidden; padding-block: clamp(5.5rem, 10vw, 8.5rem); border-top: 1px solid var(--color-line); background: var(--color-surface-raised); color: var(--color-ink); text-align: center; }
.try::before { content: ""; position: absolute; z-index: 0; left: 50%; top: -19rem; width: min(75vw, 760px); height: 30rem; border-radius: 50%; background: radial-gradient(ellipse, color-mix(in srgb, var(--color-soft-amber) 43%, transparent), transparent 67%); transform: translateX(-50%); filter: blur(10px); }
.try-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }
.try .eyebrow { color: var(--color-primary); }
.try h2 { max-width: 13ch; color: var(--color-ink); }
.try-inner > p:not(.eyebrow) { max-width: 33rem; margin-top: 22px; color: var(--color-muted); font-size: 1rem; line-height: 1.8; }
.try .button { margin-top: 32px; }
.try small { margin-top: 20px; color: var(--color-muted); font-size: 0.73rem; font-weight: 650; }
.try-app-icon { width: 86px; margin-bottom: 21px; }
.try-app-icon > img:first-child { border-radius: 25px; box-shadow: 0 16px 26px rgba(47, 38, 23, 0.16); }

.site-footer { padding-block: clamp(3.5rem, 7vw, 5.5rem); background: #171813; color: #f5f2ea; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 0.72fr) minmax(205px, 0.7fr) minmax(290px, 1.05fr); gap: clamp(2rem, 5vw, 5.5rem); }
.footer-brand { color: #f5f2ea; font-size: 1.15rem; }
.footer-brand img { width: 32px; height: 32px; border-radius: 10px; background: #fff; }
.footer-intro > p { margin-top: 16px; color: #aaa89d; font-size: 0.88rem; }
.footer-label { margin-bottom: 14px; color: #817f75; font-family: var(--font-mono); font-size: 0.66rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.footer-contact { font-style: normal; }
.footer-email { display: inline-block; color: #f5f2ea; font-size: clamp(1rem, 1.4vw, 1.17rem); font-weight: 750; letter-spacing: -0.025em; text-decoration: none; transition: color var(--duration-fast) var(--ease-out); }
.footer-email:hover { color: #f78a53; }
.footer-socials { display: grid; gap: 7px; margin-top: 17px; color: #b4b1a8; font-size: 0.82rem; }
.footer-socials p { margin: 0; }
.footer-socials a { color: inherit; text-decoration: none; transition: color var(--duration-fast) var(--ease-out); }
.footer-socials a:hover { color: #f5f2ea; }
.footer-socials span { margin-left: 7px; color: #f5f2ea; font-weight: 700; }
.footer-rights > p:not(.footer-label) { max-width: 39rem; color: #cbc8be; font-size: 0.79rem; line-height: 1.8; }
.footer-rights .footer-note { margin-top: 11px; color: #8f8d83; font-size: 0.73rem; }

/* ── 滚动揭示 ─────────────────────────────────────────── */

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ── 响应式 ───────────────────────────────────────────── */

@media (max-width: 980px) {
  .nav-links { display: none; }
  .hero { min-height: auto; padding-top: 126px; }
  .hero-grid { grid-template-columns: minmax(0, 0.92fr) minmax(320px, 0.85fr); min-height: 630px; }
  .hero-copy h1 { font-size: clamp(3.5rem, 7.6vw, 5.1rem); }
  .hero-stage { min-height: 565px; }
  .app-orbit { left: -18px; transform: scale(0.87); transform-origin: top left; }
  .memory-card { transform-origin: center; }
  .memory-card-one { left: -40px; }
  .memory-card-two { right: -30px; }
  .memory-card-three { right: -33px; }
  .hero-phone { right: 3%; width: min(43vw, 305px); }
  .hello-layout { gap: clamp(2.5rem, 6vw, 4rem); }
  .story-step { padding-inline: 20px; }
  .promise-showcase { gap: 2.6rem; }
  .mobile-heading { align-items: start; flex-direction: column; }
}

@media (max-width: 720px) {
  .shell { padding-inline: 20px; }
  .desktop-only { display: none; }
  .site-nav { min-height: 62px; margin-top: 10px; padding: 6px 7px 6px 10px; }
  .brand-mark { width: 34px; height: 34px; border-radius: 11px; }
  .brand-name { font-size: 0.97rem; }
  .theme-toggle { padding: 0; width: 42px; }
  .theme-toggle-label { display: none; }
  .download-link { min-height: 40px; padding-inline: 12px; font-size: 0.75rem; }
  .hero { padding-top: 116px; }
  .hero::after { height: 88px; }
  .hero-aura { right: -45vw; top: 4vw; width: 125vw; height: 125vw; }
  .hero-grid { display: block; min-height: 0; }
  .hero-copy { padding-bottom: 13px; }
  .hero-copy h1 { margin-top: 17px; font-size: clamp(3.15rem, 14vw, 4.2rem); }
  .hero-lead { margin-top: 20px; font-size: 0.96rem; line-height: 1.78; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 13px; margin-top: 26px; }
  .hero-stage { min-height: 510px; margin-top: 4px; }
  .hero-phone { right: 50%; bottom: -17px; width: min(62vw, 280px); transform: translateX(44%) rotate(5deg); }
  .app-orbit { top: 38px; left: 1px; width: 124px; height: 124px; }
  .app-orbit img { width: 67px; height: 67px; border-radius: 21px; }
  .memory-card { width: 160px; padding: 10px; border-radius: 16px; }
  .memory-card strong { font-size: 0.7rem; }
  .memory-card small { font-size: 0.58rem; }
  .memory-icon { width: 25px; height: 25px; font-size: 0.77rem; }
  .memory-card-one { top: 190px; left: -13px; }
  .memory-card-two { top: 32px; right: -16px; }
  .memory-card-three { right: -18px; bottom: 72px; }
  .hero-scroll-note { display: none; }
  @keyframes phone-in { from { opacity: 0; transform: translate(44%, 43px) rotate(10deg) scale(0.86); } to { opacity: 1; transform: translateX(44%) rotate(5deg); } }

  .section { padding-block: 5rem; }
  .section-heading h2, .story-heading h2, .mobile-heading h2, .moods h2, .feedback h2, .try h2 { font-size: clamp(2.35rem, 11vw, 3.4rem); }
  .hello-layout { display: flex; flex-direction: column; align-items: stretch; gap: 38px; }
  .section-heading > p:not(.eyebrow) { margin-top: 18px; font-size: 0.97rem; }
  .prompt-board { width: calc(100% - 8px); margin-left: 4px; padding: 22px 18px; }
  .prompt-board::before { right: -22px; top: -23px; width: 95px; height: 95px; }
  .prompt-line { grid-template-columns: 25px 1fr; gap: 8px; }
  .prompt-line p { font-size: 0.88rem; }

  .story-steps { grid-template-columns: 1fr; margin-top: 40px; }
  .story-step { min-height: 0; padding: 25px 6px 29px 0; border-right: 0; border-bottom: 1px solid var(--color-line); }
  .story-step:last-child { border-bottom: 0; }
  .step-copy { margin-top: 24px; padding-right: 58px; }
  .step-copy h3 { font-size: 1.75rem; }
  .step-copy > p:last-child { margin-top: 13px; font-size: 0.88rem; }
  .step-sticker { right: 0; top: 23px; width: 78px; }
  .promise-showcase { grid-template-columns: 1fr; gap: 27px; margin-top: 50px; padding: 31px 22px 0; }
  .promise-copy h3 { font-size: 2.38rem; }
  .promise-copy > p:not(.eyebrow):not(.promise-quote) { font-size: 0.94rem; }
  .promise-phone { width: 230px; }

  .phone-gallery { grid-template-columns: 1fr; gap: 47px; margin-top: 43px; }
  .gallery-label { margin-bottom: 13px; }
  .gallery-label strong { font-size: 1.5rem; }
  .gallery-phone-wrap { min-height: 432px; }
  .gallery-phone { width: 210px; }
  .gallery-pet { width: 82px; }
  .moods { padding-top: 5rem; }
  .marquee { gap: 12px; margin-top: 37px; padding-bottom: 4.5rem; }
  .marquee-track { gap: 12px; }
  .marquee-track li { width: 111px; }
  .feedback-grid { grid-template-columns: 1fr; gap: 35px; }
  .feedback-copy { padding-top: 0; }
  .feedback-form { padding: 20px; }
  .feedback-copy > p:not(.eyebrow):not(.feedback-promise) { margin-top: 19px; font-size: 0.95rem; }
  .feedback-submit-row { align-items: stretch; flex-direction: column; gap: 10px; }
  .feedback-submit-row .button { width: 100%; }
  .feedback-status { min-height: 0; flex: none; }
  .try { padding-block: 5rem 5.4rem; }
  .try::before { top: -15rem; width: 142vw; height: 25rem; }
  .try-app-icon { width: 78px; }
  .try-inner > p:not(.eyebrow) { font-size: 0.93rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-intro > p { margin-top: 11px; }
  .footer-label { margin-bottom: 10px; }
  .footer-rights > p:not(.footer-label) { font-size: 0.76rem; }
}

/* ── 无障碍 ───────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .hero-copy,
  .js .memory-card,
  .js .app-orbit,
  .js .hero-phone,
  .reveal { opacity: 1; transform: none; }
  .hero-phone { transform: rotate(5deg); }
  .marquee { animation: none; }
}