/* ============================================================
   拾光里 SHIGUANGLI — 官网样式
   视觉主题：金色时光的胶片相册
   ============================================================ */

:root {
  --bg: #f7f1e6;
  --bg-soft: #f0e7d6;
  --paper: #fffdf7;
  --ink: #2a231b;
  --ink-soft: #7a6d5b;
  --line: rgba(42, 35, 27, 0.14);
  --accent: #b8622a;
  --accent-deep: #8f4718;
  --accent-soft: #e3a76b;
  --dark: #1f1912;
  --dark-2: #2b2218;
  --serif: 'Noto Serif SC', 'Songti SC', serif;
  --sans: 'Noto Sans SC', 'PingFang SC', sans-serif;
  --hand: 'Ma Shan Zheng', cursive;
  --nav-h: 72px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--paper); }

/* ---------- 胶片颗粒 ---------- */
.grain {
  position: fixed; inset: -50%;
  width: 200%; height: 200%;
  pointer-events: none; z-index: 2000;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grainShift 0.9s steps(4) infinite;
}
@keyframes grainShift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-1.2%, 0.8%); }
  50% { transform: translate(0.8%, -1%); }
  75% { transform: translate(-0.6%, -0.7%); }
  100% { transform: translate(1%, 0.9%); }
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans); font-size: 15px; font-weight: 500;
  padding: 14px 26px; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out),
              background 0.3s, color 0.3s, border-color 0.3s;
  position: relative; overflow: hidden; white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary {
  background: var(--accent); color: var(--paper);
  box-shadow: 0 10px 24px -10px rgba(184, 98, 42, 0.55);
}
.btn-primary::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.8s var(--ease-out);
}
.btn-primary:hover::after { transform: translateX(120%); }
.btn-primary:hover { background: var(--accent-deep); box-shadow: 0 14px 30px -10px rgba(143, 71, 24, 0.6); }
.btn-ink { background: var(--ink); color: var(--bg); }
.btn-ink:hover { background: var(--accent-deep); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 9px 20px; font-size: 13.5px; }
.btn-sm svg { width: 15px; height: 15px; }

/* ============================================================
   导航
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(20px, 4.5vw, 56px);
  transition: background 0.4s, box-shadow 0.4s, backdrop-filter 0.4s;
}
.nav.scrolled {
  background: rgba(247, 241, 230, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--line);
}
.nav-brand { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.nav-logo { width: 34px; height: 34px; transition: transform 0.6s var(--ease-out); }
.nav-brand:hover .nav-logo { transform: rotate(18deg); }
.nav-name {
  font-family: var(--serif); font-weight: 900; font-size: 21px;
  letter-spacing: 0.06em;
}
.nav-links { display: flex; gap: clamp(18px, 3vw, 40px); }
.nav-links a {
  font-size: 14.5px; color: var(--ink-soft);
  position: relative; padding: 6px 0;
  transition: color 0.3s;
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1.5px; background: var(--accent);
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.4s var(--ease-out);
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after {
  transform: scaleX(1); transform-origin: left;
}
.nav-actions { display: flex; align-items: center; gap: 14px; }

.nav-burger {
  display: none; width: 40px; height: 40px;
  background: none; border: none; cursor: pointer;
  position: relative;
}
.nav-burger span {
  position: absolute; left: 10px; right: 10px; height: 2px;
  background: var(--ink); border-radius: 2px;
  transition: transform 0.35s var(--ease-out), top 0.35s var(--ease-out);
}
.nav-burger span:first-child { top: 16px; }
.nav-burger span:last-child { top: 24px; }
.nav-burger.open span:first-child { top: 20px; transform: rotate(45deg); }
.nav-burger.open span:last-child { top: 20px; transform: rotate(-45deg); }

.mobile-menu {
  position: fixed; top: var(--nav-h); left: 0; right: 0; z-index: 99;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 12px 24px 28px;
  background: rgba(247, 241, 230, 0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  transform: translateY(-110%); opacity: 0;
  transition: transform 0.5s var(--ease-out), opacity 0.4s;
  pointer-events: none;
}
.mobile-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-menu a:not(.btn) { padding: 12px; font-size: 16px; color: var(--ink); }
.mobile-menu .btn { margin-top: 10px; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 24px) clamp(20px, 5vw, 72px) 72px;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 85% 10%, rgba(227, 167, 107, 0.28) 0%, transparent 55%),
    radial-gradient(80% 70% at 10% 95%, rgba(184, 98, 42, 0.12) 0%, transparent 60%),
    var(--bg);
}
.dust { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.orb {
  position: absolute; border-radius: 50%; pointer-events: none;
  filter: blur(70px); opacity: 0.55;
}
.orb-a {
  width: 480px; height: 480px; right: -120px; top: -100px;
  background: radial-gradient(circle, rgba(227, 167, 107, 0.75), transparent 70%);
  animation: orbFloat 14s ease-in-out infinite;
}
.orb-b {
  width: 340px; height: 340px; left: -80px; bottom: -60px;
  background: radial-gradient(circle, rgba(184, 98, 42, 0.4), transparent 70%);
  animation: orbFloat 18s ease-in-out infinite reverse;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 40px) scale(1.08); }
}

.hero-inner {
  position: relative; z-index: 2;
  width: 100%; max-width: 1240px; margin: 0 auto;
  display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 80px); align-items: center;
}

.hero-eyebrow {
  display: flex; align-items: center; gap: 14px;
  font-size: 13.5px; letter-spacing: 0.22em;
  color: var(--accent-deep); font-weight: 500;
  margin-bottom: 26px;
}
.eyebrow-line { width: 44px; height: 1px; background: var(--accent); flex: none; }

.hero-title {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(44px, 6.4vw, 84px);
  line-height: 1.16; letter-spacing: 0.02em;
  margin-bottom: 28px;
}
.hero-title span { display: block; }
.hero-title em {
  font-style: normal; color: var(--accent);
  position: relative;
}
.hero-title em::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0.04em;
  height: 0.16em; background: rgba(227, 167, 107, 0.5);
  z-index: -1; transform: scaleX(0); transform-origin: left;
  animation: underlineGrow 1s var(--ease-out) 1.1s forwards;
}
@keyframes underlineGrow { to { transform: scaleX(1); } }

.hero-sub {
  font-size: clamp(15px, 1.4vw, 17.5px);
  color: var(--ink-soft); font-weight: 300;
  max-width: 480px; margin-bottom: 38px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 34px; }

.hero-meta { display: flex; align-items: center; gap: 12px; }
.stars { display: flex; gap: 2px; color: var(--accent); }
.stars svg { width: 15px; height: 15px; }
.meta-text { font-size: 13px; color: var(--ink-soft); letter-spacing: 0.02em; }

/* Hero 入场动画 */
.reveal-hero {
  opacity: 0; transform: translateY(34px);
  animation: heroIn 1s var(--ease-out) forwards;
  animation-delay: var(--d, 0s);
}
@keyframes heroIn {
  to { opacity: 1; transform: translateY(0); }
}

/* Hero 右侧视觉 */
.hero-visual { position: relative; display: flex; justify-content: center; padding: 20px 0; }

/* ---------- 手机模型 ---------- */
.phone {
  width: clamp(240px, 22vw, 300px);
  aspect-ratio: 9 / 18.6;
  background: var(--dark);
  border-radius: 44px;
  padding: 10px;
  box-shadow:
    0 40px 80px -24px rgba(42, 35, 27, 0.45),
    inset 0 0 0 2px rgba(255, 255, 255, 0.08);
  position: relative;
  will-change: transform;
  transition: transform 0.3s ease-out;
}
.phone-notch {
  position: absolute; top: 22px; left: 50%;
  transform: translateX(-50%);
  width: 34%; height: 22px;
  background: var(--dark); border-radius: 14px;
  z-index: 3;
}
.phone-screen {
  position: relative; width: 100%; height: 100%;
  border-radius: 34px; overflow: hidden;
  background: var(--dark-2);
}
.phone-screen > img {
  width: 100%; height: 100%; object-fit: cover;
}
.phone-hero .phone-screen > img {
  animation: kenburns 16s ease-in-out infinite alternate;
}
@keyframes kenburns {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.12) translate(-2%, 2%); }
}
.screen-hud {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 44px 18px 20px;
  display: flex; justify-content: space-between; align-items: flex-end;
  background: linear-gradient(to top, rgba(31, 25, 18, 0.72), transparent);
  color: rgba(255, 253, 247, 0.92);
}
.hud-date { font-family: var(--serif); font-size: 15px; font-weight: 600; letter-spacing: 0.08em; }
.hud-tag {
  font-size: 10.5px; letter-spacing: 0.28em; padding: 4px 10px;
  border: 1px solid rgba(255, 253, 247, 0.45); border-radius: 999px;
}
.phone-glow {
  position: absolute; inset: -14%;
  background: radial-gradient(60% 60% at 50% 45%, rgba(227, 167, 107, 0.35), transparent 70%);
  z-index: -1; filter: blur(30px);
  animation: glowPulse 5s ease-in-out infinite;
}
@keyframes glowPulse {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.06); }
}

/* ---------- 拍立得 ---------- */
.polaroid {
  background: var(--paper);
  padding: 9px 9px 12px;
  border-radius: 4px;
  box-shadow: 0 18px 40px -16px rgba(42, 35, 27, 0.38);
  position: relative;
  transform: rotate(var(--r, 0deg));
  transition: transform 0.55s var(--ease-out), box-shadow 0.55s var(--ease-out);
}
.pol-img { overflow: hidden; background: var(--bg-soft); }
.pol-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease-out); }
.polaroid figcaption {
  font-family: var(--hand);
  font-size: 16px; color: var(--ink);
  text-align: center; padding-top: 9px; letter-spacing: 0.05em;
}
.polaroid:hover {
  transform: rotate(0deg) translateY(-10px) scale(1.035);
  box-shadow: 0 30px 60px -18px rgba(42, 35, 27, 0.5);
  z-index: 5;
}
.polaroid:hover .pol-img img { transform: scale(1.07); }

.tape {
  position: absolute; top: -12px; left: 50%;
  transform: translateX(-50%) rotate(-3deg);
  width: 76px; height: 24px;
  background: rgba(227, 167, 107, 0.42);
  backdrop-filter: blur(2px);
  border-left: 1px dashed rgba(255, 253, 247, 0.5);
  border-right: 1px dashed rgba(255, 253, 247, 0.5);
  z-index: 2;
}

.polaroid-mini { position: absolute; width: clamp(110px, 11vw, 150px); z-index: 3; }
.polaroid-mini .pol-img { aspect-ratio: 1 / 1; }
.polaroid-mini figcaption { font-size: 13px; padding-top: 6px; }
.pol-a {
  left: -3%; bottom: 6%; --r: -9deg;
  animation: heroIn 1s var(--ease-out) var(--d, 0s) forwards,
             polFloat 7s ease-in-out 2s infinite;
}
.pol-b {
  right: -3%; top: 2%; --r: 8deg;
  animation: heroIn 1s var(--ease-out) var(--d, 0s) forwards,
             polFloat 8s ease-in-out 2.4s infinite;
}
@keyframes polFloat {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -12px; }
}

.handnote {
  position: absolute; left: 50%; top: -10px; z-index: 4;
  font-family: var(--hand); font-size: clamp(18px, 1.6vw, 24px);
  color: var(--accent-deep);
  transform: translateX(-50%) rotate(-4deg);
  white-space: nowrap;
}
.handnote::before {
  content: ''; position: absolute; left: -34px; top: 50%;
  width: 26px; height: 2px;
  background: var(--accent-soft); border-radius: 2px;
}

.scroll-hint {
  position: absolute; left: 50%; bottom: 26px;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-size: 11px; letter-spacing: 0.3em; color: var(--ink-soft);
  z-index: 2;
}
.hint-line { width: 1px; height: 44px; background: var(--line); position: relative; overflow: hidden; }
.hint-line::after {
  content: ''; position: absolute; left: 0; top: 0;
  width: 100%; height: 40%;
  background: var(--accent);
  animation: hintDrop 2s var(--ease-out) infinite;
}
@keyframes hintDrop {
  0% { transform: translateY(-110%); }
  60%, 100% { transform: translateY(280%); }
}

/* ============================================================
   跑马灯
   ============================================================ */
.marquee {
  background: var(--dark); color: var(--bg);
  padding: 16px 0; overflow: hidden;
  border-top: 1px solid rgba(255, 253, 247, 0.06);
}
.marquee-track {
  display: flex; align-items: center; gap: 44px;
  width: max-content;
  animation: marquee 26s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--serif); font-size: 15px; font-weight: 600;
  letter-spacing: 0.24em; white-space: nowrap;
}
.marquee-track i { color: var(--accent-soft); font-style: normal; font-size: 12px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ============================================================
   通用 Section 头
   ============================================================ */
.section-head {
  max-width: 1240px; margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 72px);
}
.section-eyebrow {
  display: flex; align-items: center; gap: 14px;
  font-size: 13px; letter-spacing: 0.26em;
  color: var(--accent-deep); font-weight: 500;
  margin-bottom: 20px;
}
.section-eyebrow::before { content: ''; width: 36px; height: 1px; background: var(--accent); }
.eyebrow-light { color: var(--accent-soft); }
.eyebrow-light::before { background: var(--accent-soft); }
.section-title {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1.22; letter-spacing: 0.02em;
}
.section-title em { font-style: normal; color: var(--accent); }
.section-head-light .section-title em { color: var(--accent-soft); }

/* 滚动显现 */
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* ============================================================
   功能
   ============================================================ */
.features { padding: clamp(80px, 11vw, 150px) 0 clamp(70px, 9vw, 120px); }
.features .section-title { margin-bottom: clamp(48px, 6vw, 84px); }

.feature-list { max-width: 1240px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 72px); }
.feature-row {
  display: grid;
  grid-template-columns: 70px 96px 1fr;
  gap: clamp(20px, 4vw, 56px);
  align-items: center;
  padding: clamp(30px, 4vw, 46px) 8px;
  border-top: 1px solid var(--line);
  position: relative;
  transition: padding 0.5s var(--ease-out);
}
.feature-row:last-child { border-bottom: 1px solid var(--line); }
.feature-row::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(227, 167, 107, 0.16), transparent 70%);
  opacity: 0; transition: opacity 0.5s;
}
.feature-row:hover::before { opacity: 1; }
.feature-row:hover { padding-left: 24px; }

.feature-num {
  font-family: var(--serif); font-size: 15px; font-weight: 600;
  color: var(--ink-soft); letter-spacing: 0.1em;
  transition: color 0.4s;
}
.feature-row:hover .feature-num { color: var(--accent); }

.feature-icon {
  width: 96px; height: 96px; flex: none;
  border-radius: 30px;
  border: 1px solid var(--line);
  background: var(--paper);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink);
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out),
              background 0.4s, border-color 0.4s, color 0.4s;
}
.feature-icon svg { width: 52px; height: 52px; }
.feature-row:hover .feature-icon {
  transform: rotate(-6deg) scale(1.06);
  background: var(--ink); color: var(--bg); border-color: var(--ink);
  box-shadow: 0 20px 40px -16px rgba(42, 35, 27, 0.4);
}

.feature-body h3 {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(22px, 2.4vw, 30px);
  margin-bottom: 10px; letter-spacing: 0.03em;
}
.feature-body p {
  color: var(--ink-soft); font-weight: 300;
  font-size: 15.5px; max-width: 560px;
  margin-bottom: 14px;
}
.feature-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.feature-tags span {
  font-size: 12px; letter-spacing: 0.08em;
  color: var(--accent-deep);
  border: 1px solid rgba(184, 98, 42, 0.35);
  padding: 4px 12px; border-radius: 999px;
  transition: background 0.3s, color 0.3s;
}
.feature-row:hover .feature-tags span { background: rgba(184, 98, 42, 0.1); }

/* ============================================================
   Sticky 滚动故事
   ============================================================ */
.story {
  background: var(--dark);
  color: var(--bg);
  padding: clamp(80px, 10vw, 140px) 0 0;
  position: relative;
  overflow: clip;
}
.story::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(50% 35% at 20% 8%, rgba(227, 167, 107, 0.14), transparent 70%),
    radial-gradient(45% 35% at 90% 80%, rgba(184, 98, 42, 0.12), transparent 70%);
  pointer-events: none;
}
.story .section-head { margin-bottom: clamp(40px, 5vw, 60px); }
.story .section-eyebrow { color: var(--accent-soft); }

.story-stage {
  position: relative;
  max-width: 1240px; margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 72px);
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 6vw, 100px);
}
.story-sticky {
  position: sticky; top: calc(var(--nav-h) + 40px);
  height: fit-content;
  display: flex; justify-content: center;
  align-self: start;
  padding-bottom: 40px;
}
.phone-story { width: clamp(240px, 24vw, 310px); }
.story-img {
  position: absolute; inset: 0;
  opacity: 0; transform: scale(1.08);
  transition: opacity 0.9s var(--ease-out), transform 1.2s var(--ease-out);
}
.story-img.is-active { opacity: 1; transform: scale(1); }

.story-steps { padding: 10vh 0 12vh; }
.story-step {
  min-height: 62vh;
  display: flex; flex-direction: column; justify-content: center;
  opacity: 0.25; transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  border-left: 1px solid rgba(247, 241, 230, 0.14);
  padding-left: clamp(24px, 3vw, 44px);
  position: relative;
}
.story-step::before {
  content: ''; position: absolute; left: -1px; top: 50%;
  width: 3px; height: 0; background: var(--accent-soft);
  transition: height 0.6s var(--ease-out), top 0.6s var(--ease-out);
  border-radius: 3px;
}
.story-step.is-active { opacity: 1; transform: translateY(0); }
.story-step.is-active::before { height: 88px; top: calc(50% - 44px); }

.step-index {
  font-size: 12px; letter-spacing: 0.34em;
  color: var(--accent-soft); margin-bottom: 16px; font-weight: 500;
}
.story-step h3 {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(26px, 3vw, 40px);
  margin-bottom: 16px; letter-spacing: 0.02em;
}
.story-step p {
  color: rgba(247, 241, 230, 0.66); font-weight: 300;
  font-size: 15.5px; max-width: 400px;
}

/* ============================================================
   拾光墙
   ============================================================ */
.wall { padding: clamp(80px, 11vw, 150px) 0; }
.wall .section-title { margin-bottom: clamp(44px, 5vw, 72px); }

.wall-board {
  max-width: 1240px; margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 72px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 3.4vw, 52px) clamp(20px, 3vw, 44px);
  align-items: start;
}
.wall-pol { width: 100%; }
.wall-pol .pol-img { aspect-ratio: 4 / 3.6; }
.wall-pol:nth-child(even) { margin-top: clamp(16px, 3vw, 52px); }
.w-1 { --r: -5deg; } .w-2 { --r: 3.5deg; } .w-3 { --r: -2.5deg; }
.w-4 { --r: 4deg; } .w-5 { --r: -4deg; } .w-6 { --r: 2.5deg; }

.wall-quote {
  grid-column: 1 / -1;
  text-align: center; padding: clamp(30px, 4vw, 56px) 0 0;
}
.wall-quote p {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(19px, 2.2vw, 27px);
  line-height: 1.9; color: var(--ink);
}
.wall-quote span {
  display: block; margin-top: 16px;
  font-family: var(--hand); font-size: 17px; color: var(--accent-deep);
}

/* ============================================================
   数据
   ============================================================ */
.stats {
  background: linear-gradient(180deg, var(--bg-soft), var(--bg));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stats-inner {
  max-width: 1240px; margin: 0 auto;
  padding: clamp(52px, 7vw, 84px) clamp(20px, 5vw, 72px);
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat { text-align: center; position: relative; }
.stat:not(:last-child)::after {
  content: ''; position: absolute; right: -16px; top: 20%;
  height: 60%; width: 1px; background: var(--line);
}
.stat-num {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(34px, 4.4vw, 58px);
  color: var(--ink); line-height: 1.1;
  display: block; margin-bottom: 10px;
}
.stat-num .count { color: var(--accent); }
.stat-num sup, .stat-num .count-suffix { color: var(--accent-deep); }
.stat-label { font-size: 13.5px; color: var(--ink-soft); letter-spacing: 0.12em; }

/* ============================================================
   用户评价
   ============================================================ */
.voices { padding: clamp(80px, 11vw, 150px) 0 clamp(70px, 9vw, 120px); }
.voices .section-title { margin-bottom: clamp(44px, 5vw, 68px); }

.voice-slider {
  max-width: 860px; margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 40px);
  position: relative;
}
.voice-slider::before {
  content: '「'; position: absolute; top: -34px; left: clamp(8px, 3vw, 24px);
  font-family: var(--serif); font-size: 110px; line-height: 1;
  color: rgba(184, 98, 42, 0.18);
  pointer-events: none;
}
.voice-track {
  display: grid; overflow: hidden;
}
.voice-slide {
  grid-area: 1 / 1;
  opacity: 0; transform: translateY(18px) scale(0.985);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  pointer-events: none;
  text-align: center;
  padding: 10px 6px;
}
.voice-slide.is-active {
  opacity: 1; transform: translateY(0) scale(1);
  pointer-events: auto;
}
.voice-slide p {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(18px, 2.3vw, 26px);
  line-height: 1.9; letter-spacing: 0.02em;
  margin-bottom: 28px;
}
.voice-slide footer { display: flex; flex-direction: column; gap: 4px; }
.voice-name { font-weight: 700; font-size: 15px; }
.voice-role { font-size: 13px; color: var(--ink-soft); }

.voice-dots {
  display: flex; justify-content: center; gap: 10px; margin-top: 36px;
}
.voice-dots button {
  width: 9px; height: 9px; border-radius: 999px;
  border: none; cursor: pointer;
  background: var(--line);
  transition: width 0.45s var(--ease-out), background 0.3s;
  padding: 0;
}
.voice-dots button.is-active { width: 30px; background: var(--accent); }

/* ============================================================
   下载
   ============================================================ */
.download {
  position: relative; overflow: hidden;
  background:
    radial-gradient(90% 120% at 15% 0%, rgba(227, 167, 107, 0.35) 0%, transparent 55%),
    radial-gradient(70% 100% at 90% 100%, rgba(143, 71, 24, 0.28) 0%, transparent 60%),
    var(--dark);
  color: var(--bg);
}
.download-inner {
  max-width: 1240px; margin: 0 auto;
  padding: clamp(80px, 10vw, 130px) clamp(20px, 5vw, 72px);
  display: grid; grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(40px, 6vw, 90px); align-items: center;
}
.download-title {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(36px, 5vw, 62px);
  line-height: 1.24; letter-spacing: 0.02em;
  margin-bottom: 20px;
}
.download-sub {
  color: rgba(247, 241, 230, 0.68); font-weight: 300;
  font-size: 16px; margin-bottom: 38px;
}
.download-btns { display: flex; gap: 16px; flex-wrap: wrap; }

.store-badge {
  display: inline-flex; align-items: center; gap: 13px;
  padding: 13px 24px; border-radius: 14px;
  background: rgba(247, 241, 230, 0.08);
  border: 1px solid rgba(247, 241, 230, 0.24);
  transition: transform 0.4s var(--ease-out), background 0.3s, border-color 0.3s;
}
.store-badge:hover {
  transform: translateY(-4px);
  background: rgba(247, 241, 230, 0.14);
  border-color: rgba(247, 241, 230, 0.5);
}
.store-badge svg { width: 26px; height: 26px; color: var(--bg); flex: none; }
.store-text { display: flex; flex-direction: column; line-height: 1.25; text-align: left; }
.store-text small { font-size: 10px; letter-spacing: 0.1em; opacity: 0.7; }
.store-text strong { font-size: 17px; font-weight: 600; letter-spacing: 0.02em; }

.download-qr { position: relative; display: flex; justify-content: center; }
.qr-card {
  background: var(--paper); color: var(--ink);
  padding: 22px 22px 16px; border-radius: 10px;
  transform: rotate(2.5deg);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.5);
  position: relative; z-index: 2;
  transition: transform 0.5s var(--ease-out);
}
.qr-card:hover { transform: rotate(0deg) scale(1.03); }
.qr-card canvas { width: 180px; height: 180px; display: block; }
.qr-hint {
  text-align: center; margin-top: 12px;
  font-family: var(--hand); font-size: 16px; color: var(--accent-deep);
}
.qr-light {
  position: absolute; inset: -20%;
  background: radial-gradient(50% 50% at 50% 50%, rgba(227, 167, 107, 0.4), transparent 70%);
  filter: blur(40px); z-index: 1;
  animation: glowPulse 6s ease-in-out infinite;
}

/* ============================================================
   页脚
   ============================================================ */
.footer { background: var(--dark); color: rgba(247, 241, 230, 0.72); }
.footer-top {
  max-width: 1240px; margin: 0 auto;
  padding: clamp(56px, 7vw, 80px) clamp(20px, 5vw, 72px) 40px;
  display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap;
}
.footer .nav-brand { color: var(--bg); }
.footer-slogan {
  margin-top: 16px; font-family: var(--hand);
  font-size: 18px; color: var(--accent-soft);
}
.footer-cols { display: flex; gap: clamp(40px, 6vw, 90px); flex-wrap: wrap; }
.footer-col { display: flex; flex-direction: column; gap: 12px; min-width: 100px; }
.footer-col h4 {
  font-size: 13px; letter-spacing: 0.2em; color: var(--bg);
  margin-bottom: 8px; font-weight: 600;
}
.footer-col a { font-size: 14px; font-weight: 300; transition: color 0.3s, transform 0.3s; }
.footer-col a:hover { color: var(--accent-soft); transform: translateX(4px); }
.footer-bottom {
  max-width: 1240px; margin: 0 auto;
  padding: 22px clamp(20px, 5vw, 72px);
  border-top: 1px solid rgba(247, 241, 230, 0.1);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 12.5px; color: rgba(247, 241, 230, 0.45);
  letter-spacing: 0.04em;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 60px; text-align: center; }
  .hero-copy { display: flex; flex-direction: column; align-items: center; }
  .hero-eyebrow { justify-content: center; }
  .story-stage { grid-template-columns: 1fr; }
  .story-sticky { top: calc(var(--nav-h) + 16px); }
  .story-step { min-height: 0; padding: 64px 0 64px clamp(24px, 3vw, 44px); }
  .download-inner { grid-template-columns: 1fr; text-align: center; }
  .download-copy { display: flex; flex-direction: column; align-items: center; }
  .download-btns { justify-content: center; }
}

@media (max-width: 820px) {
  .nav-links { display: none; }
  .nav-actions .btn { display: none; }
  .nav-burger { display: block; }
  .wall-board { grid-template-columns: repeat(2, 1fr); }
  .wall-pol:nth-child(even) { margin-top: clamp(24px, 6vw, 44px); }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 40px 20px; }
  .stat:not(:last-child)::after { display: none; }
  .feature-row { grid-template-columns: 44px 72px 1fr; gap: 16px; }
  .feature-icon { width: 72px; height: 72px; border-radius: 22px; }
  .feature-icon svg { width: 40px; height: 40px; }
  .polaroid-mini { width: 104px; }
  .handnote { right: 2%; bottom: 2%; }
}

@media (max-width: 560px) {
  .feature-row { grid-template-columns: 1fr; gap: 18px; }
  .feature-num { font-size: 13px; }
  .feature-icon { width: 64px; height: 64px; border-radius: 18px; }
  .feature-icon svg { width: 36px; height: 36px; }
  .hero-cta .btn { flex: 1; justify-content: center; }
  .hero-meta { flex-direction: column; gap: 6px; }
  .wall-board { grid-template-columns: 1fr; max-width: 400px; }
  .wall-pol:nth-child(even) { margin-top: 0; }
  .pol-b { right: 0; }
  .pol-a { left: 0; }
  .scroll-hint { display: none; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
  .footer-top { flex-direction: column; }
}

/* ============================================================
   动效偏好：减少动态
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
  html { scroll-behavior: auto; }
  .reveal, .reveal-hero { opacity: 1; transform: none; }
  .grain { display: none; }
}