/* =========================================================
   春水Live · Miharu — Landing Page
   配色取自 Logo：柔粉、玫瑰、奶油白与深梅色
   ========================================================= */

:root {
  --rose-50: #fff5f7;
  --rose-100: #fde8ee;
  --rose-200: #f9ccd8;
  --rose-300: #f4a8bb;
  --rose-400: #ec7f9b;
  --rose-500: #de5c80;
  --rose-600: #c63f66;
  --plum-900: #291722;
  --plum-800: #362131;
  --plum-700: #46293c;
  --cream: #fff9f6;
  --cream-2: #fff3f1;
  --white: #ffffff;
  --ink: #33222b;
  --ink-soft: #5c4753;
  --muted: #85707b;
  --line: rgba(198, 63, 102, 0.12);
  --gold: #e4b87c;

  --grad-main: linear-gradient(135deg, #f291ad 0%, #e0668a 48%, #c63f66 100%);
  --grad-soft: linear-gradient(135deg, #fff0f4 0%, #fde3ea 55%, #f6e6f4 100%);
  --grad-text: linear-gradient(120deg, #e0668a 0%, #c63f66 45%, #a94a86 100%);

  --shadow-sm: 0 8px 24px -12px rgba(90, 31, 56, 0.22);
  --shadow-md: 0 22px 50px -24px rgba(90, 31, 56, 0.32);
  --shadow-lg: 0 40px 80px -32px rgba(70, 22, 43, 0.4);

  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei",
    "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI",
    sans-serif;

  --header-h: 78px;
  --radius-lg: 30px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(50% 40% at 85% 0%, rgba(253, 232, 238, 0.9) 0%, transparent 70%),
    radial-gradient(45% 40% at 0% 45%, rgba(246, 230, 244, 0.55) 0%, transparent 70%),
    var(--cream);
}

img {
  max-width: 100%;
  display: block;
}

/* 空 src 时不显示浏览器的破图图标，待填入地址后自动显示 */
img[src=""] {
  opacity: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, p {
  margin: 0;
}

::selection {
  background: var(--rose-300);
  color: var(--plum-900);
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

section[id],
#top {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 50%;
  z-index: 200;
  transform: translate(-50%, -160%);
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--plum-900);
  color: #fff;
  font-size: 14px;
  transition: transform 0.25s ease;
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

:focus-visible {
  outline: 2px solid var(--rose-500);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ============ 通用组件 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.25s ease, box-shadow 0.25s ease,
    background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.btn .icon {
  width: 18px;
  height: 18px;
  transition: transform 0.25s ease;
}

.btn:hover .icon {
  transform: translateX(3px);
}

.btn-primary {
  color: #fff;
  background: var(--grad-main);
  box-shadow: 0 16px 30px -14px rgba(198, 63, 102, 0.7);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 38px -14px rgba(198, 63, 102, 0.75);
}

.btn-ghost {
  color: var(--plum-800);
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid rgba(198, 63, 102, 0.18);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: rgba(198, 63, 102, 0.36);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-sm {
  height: 42px;
  padding: 0 20px;
  font-size: 14px;
}

.btn-lg {
  height: 58px;
  padding: 0 32px;
  font-size: 16px;
}

.section {
  padding: clamp(80px, 10vw, 132px) 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: clamp(40px, 5vw, 64px);
}

.section-head--center {
  max-width: 620px;
  margin-inline: auto;
  text-align: center;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--rose-600);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.section-eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.section-head--center .section-eyebrow::after {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.section-eyebrow--light {
  color: var(--rose-300);
}

.section h2 {
  font-size: clamp(2rem, 3.7vw, 3.25rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.035em;
}

.section-lead {
  margin-top: 18px;
  color: var(--muted);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.85;
}

/* 滚动出现动画 */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.75s ease, transform 0.75s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.feature-grid .reveal:nth-child(2),
.review-grid .reveal:nth-child(2),
.step-grid .reveal:nth-child(2) {
  transition-delay: 0.08s;
}

.feature-grid .reveal:nth-child(3),
.review-grid .reveal:nth-child(3),
.step-grid .reveal:nth-child(3) {
  transition-delay: 0.16s;
}

.feature-grid .reveal:nth-child(4),
.review-grid .reveal:nth-child(4) {
  transition-delay: 0.08s;
}

.feature-grid .reveal:nth-child(5),
.review-grid .reveal:nth-child(5) {
  transition-delay: 0.16s;
}

.feature-grid .reveal:nth-child(6),
.review-grid .reveal:nth-child(6) {
  transition-delay: 0.24s;
}

/* ============ 顶栏 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 249, 246, 0.72);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px) saturate(140%);
  transition: background-color 0.3s ease, border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 249, 246, 0.92);
  border-bottom-color: rgba(198, 63, 102, 0.1);
  box-shadow: 0 12px 30px -22px rgba(70, 22, 43, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: none;
}

.logo-badge {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: var(--grad-main);
  box-shadow: 0 8px 18px -8px rgba(198, 63, 102, 0.65);
}

.logo-badge::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 60% at 30% 25%, rgba(255, 255, 255, 0.45), transparent 70%),
    radial-gradient(50% 50% at 75% 85%, rgba(255, 214, 180, 0.5), transparent 70%);
  pointer-events: none;
}

.logo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-text small {
  color: var(--rose-600);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.32em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  padding: 9px 15px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.22s ease, background-color 0.22s ease;
}

.nav-link:hover {
  color: var(--rose-600);
  background: rgba(244, 168, 187, 0.14);
}

.nav-link.is-active {
  color: var(--rose-600);
  font-weight: 700;
}

.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-main);
  transform: translateX(-50%);
}

.nav-link--download {
  margin-left: 6px;
  color: var(--plum-800);
  border: 1px solid rgba(198, 63, 102, 0.18);
}

.nav-link--download:hover {
  color: var(--rose-600);
  border-color: rgba(198, 63, 102, 0.34);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  border: 1px solid rgba(198, 63, 102, 0.18);
  background: rgba(255, 255, 255, 0.7);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 1.8px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-header.menu-open .menu-toggle span:nth-child(1) {
  transform: translateY(6.8px) rotate(45deg);
}

.site-header.menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.menu-open .menu-toggle span:nth-child(3) {
  transform: translateY(-6.8px) rotate(-45deg);
}

/* ============ 首屏 ============ */
.hero {
  position: relative;
  padding: clamp(48px, 7vw, 92px) 0 clamp(32px, 4vw, 56px);
  overflow: clip;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  z-index: -1;
}

.hero-orb--a {
  top: -10%;
  right: -6%;
  width: 46vw;
  height: 46vw;
  max-width: 640px;
  max-height: 640px;
  background: radial-gradient(circle, rgba(244, 168, 187, 0.5), transparent 68%);
}

.hero-orb--b {
  bottom: 4%;
  left: -12%;
  width: 38vw;
  height: 38vw;
  max-width: 520px;
  max-height: 520px;
  background: radial-gradient(circle, rgba(212, 176, 224, 0.4), transparent 68%);
}

.hero-line {
  position: absolute;
  top: -32%;
  right: -18%;
  z-index: -1;
  width: 720px;
  height: 720px;
  border: 1px solid rgba(198, 63, 102, 0.12);
  border-radius: 50%;
  pointer-events: none;
}

.hero-line::before {
  content: "";
  position: absolute;
  inset: 70px;
  border: 1px solid rgba(198, 63, 102, 0.09);
  border-radius: 50%;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
}

.hero-copy {
  max-width: 600px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 24px;
  padding: 8px 16px 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(198, 63, 102, 0.16);
  background: rgba(255, 255, 255, 0.66);
  color: var(--rose-600);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  backdrop-filter: blur(8px);
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--rose-500);
  box-shadow: 0 0 0 4px rgba(222, 92, 128, 0.16);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(222, 92, 128, 0.14); }
  50% { box-shadow: 0 0 0 7px rgba(222, 92, 128, 0.05); }
}

.hero h1 {
  font-size: clamp(2.9rem, 5.9vw, 5.15rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.045em;
  color: var(--plum-900);
}

.title-gradient {
  display: block;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: 0.08em;
}

.hero-desc {
  max-width: 540px;
  margin-top: 24px;
  color: var(--ink-soft);
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 1.9;
}

.version-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.version-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border-radius: 12px;
  border: 1px solid rgba(198, 63, 102, 0.13);
  background: rgba(255, 255, 255, 0.72);
  font-size: 12.5px;
  backdrop-filter: blur(8px);
}

.version-label {
  color: var(--muted);
}

.version-pill strong {
  color: var(--plum-800);
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.version-pill--free {
  border-color: rgba(222, 92, 128, 0.24);
  background: rgba(253, 232, 238, 0.78);
}

.version-pill--free strong {
  color: var(--rose-600);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  color: var(--muted);
  font-size: 12.5px;
}

.hero-meta span {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--rose-300);
}

/* ---- 截图叠层 ---- */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 560px;
}

.shot-deck {
  position: relative;
  width: 100%;
  max-width: 540px;
  height: clamp(470px, 43vw, 570px);
  perspective: 1400px;
}

.shot-card {
  position: absolute;
  top: 50%;
  left: 50%;
  width: clamp(196px, 17.5vw, 244px);
  margin: 0;
  transform: translate(-50%, -50%) translateX(var(--x)) rotate(var(--r)) scale(var(--s));
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    filter 0.4s ease;
  cursor: pointer;
  will-change: transform;
}

.shot-card--1 {
  --x: -43%;
  --r: -8deg;
  --s: 0.9;
  z-index: 1;
}

.shot-card--2 {
  --x: 0%;
  --r: 0deg;
  --s: 1;
  z-index: 3;
}

.shot-card--3 {
  --x: 43%;
  --r: 8deg;
  --s: 0.9;
  z-index: 2;
}

.shot-deck:hover .shot-card:not(:hover),
.shot-deck:has(.shot-card.is-active) .shot-card:not(.is-active):not(:hover):not(:focus-visible) {
  filter: saturate(0.85) brightness(0.97);
}

.shot-card:hover,
.shot-card:focus-visible,
.shot-card.is-active {
  transform: translate(-50%, -50%) translateY(-20px) rotate(0deg) scale(1.045);
  z-index: 9;
  filter: none;
  outline: none;
}

.shot-card:focus-visible .shot-frame {
  box-shadow:
    0 0 0 3px rgba(255, 249, 246, 0.95),
    0 0 0 6px var(--rose-500),
    0 40px 70px -30px rgba(44, 18, 34, 0.65);
}

.shot-frame {
  position: relative;
  aspect-ratio: 9 / 19;
  padding: 9px;
  border-radius: 36px;
  background: linear-gradient(155deg, #4b2d40 0%, #2a1621 55%, #1c0e16 100%);
  box-shadow:
    0 40px 70px -30px rgba(44, 18, 34, 0.65),
    0 0 0 1px rgba(255, 255, 255, 0.14) inset;
}

.shot-notch {
  position: absolute;
  top: 15px;
  left: 50%;
  z-index: 3;
  width: 34%;
  height: 12px;
  border-radius: 999px;
  background: #190d14;
  transform: translateX(-50%);
}

.shot-screen {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(165deg, #fff7f8 0%, #fde8ee 42%, #f3dcea 100%);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.35) inset;
}

.shot-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 40% at 80% 6%, rgba(255, 255, 255, 0.9), transparent 60%),
    radial-gradient(50% 30% at 10% 90%, rgba(238, 180, 203, 0.45), transparent 70%);
}

.shot-screen::after {
  content: "";
  position: absolute;
  top: -30%;
  left: -60%;
  width: 70%;
  height: 120%;
  background: linear-gradient(105deg, transparent 0%, rgba(255, 255, 255, 0.5) 50%, transparent 100%);
  transform: skewX(-18deg);
  transition: left 0.7s ease;
}

.shot-card:hover .shot-screen::after,
.shot-card:focus-visible .shot-screen::after,
.shot-card.is-active .shot-screen::after {
  left: 130%;
}

.shot-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--rose-600);
}

.shot-num {
  font-size: clamp(40px, 4.4vw, 58px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(198, 63, 102, 0.22);
}

.shot-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--rose-600);
}

.shot-sub {
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: rgba(198, 63, 102, 0.45);
}

.shot-img {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.float-chip {
  position: absolute;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 12px 18px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 40px -20px rgba(90, 31, 56, 0.45);
  backdrop-filter: blur(14px);
  animation: float 6s ease-in-out infinite;
}

.float-chip strong {
  font-size: 19px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--rose-600);
}

.float-chip span {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.float-chip--a {
  top: 13%;
  left: 0;
}

.float-chip--b {
  right: 0;
  bottom: 12%;
  animation-delay: -3s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ---- 数据条 ---- */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: clamp(48px, 6vw, 78px);
  border: 1px solid rgba(198, 63, 102, 0.1);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 24px 60px -40px rgba(90, 31, 56, 0.35);
  backdrop-filter: blur(14px);
  overflow: hidden;
}

.stat-item {
  position: relative;
  padding: 26px 28px;
  text-align: center;
}

.stat-item + .stat-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26%;
  bottom: 26%;
  width: 1px;
  background: var(--line);
}

.stat-item strong {
  display: block;
  font-size: clamp(23px, 2.3vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-unit {
  font-size: 0.55em;
  font-weight: 700;
  letter-spacing: 0;
}

.stat-item span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12.5px;
  letter-spacing: 0.03em;
}

/* ============ 核心亮点 ============ */
.features {
  position: relative;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.feature-card {
  position: relative;
  padding: 32px 30px;
  border-radius: 24px;
  border: 1px solid rgba(198, 63, 102, 0.09);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 18px 40px -34px rgba(90, 31, 56, 0.4);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.35s ease, border-color 0.35s ease, background-color 0.35s ease;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -40%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244, 168, 187, 0.28), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-7px);
  border-color: rgba(198, 63, 102, 0.2);
  background: #fff;
  box-shadow: 0 30px 60px -34px rgba(90, 31, 56, 0.42);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card .feature-icon,
.feature-card h3,
.feature-card p {
  position: relative;
  z-index: 1;
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 22px;
  border-radius: 15px;
  color: var(--rose-600);
  background: linear-gradient(140deg, #fff1f4, #fbdde6);
  box-shadow: 0 10px 20px -14px rgba(198, 63, 102, 0.55);
  transition: transform 0.35s ease, color 0.35s ease, background 0.35s ease;
}

.feature-icon .icon {
  width: 24px;
  height: 24px;
}

.feature-card:hover .feature-icon {
  transform: translateY(-3px) rotate(-4deg);
  color: #fff;
  background: var(--grad-main);
}

.feature-card h3 {
  font-size: 18.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-card p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

/* ---- 花瓣机制 ---- */
.petal-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  align-items: center;
  gap: 40px;
  margin-top: clamp(52px, 7vw, 84px);
  padding: clamp(34px, 5.4vw, 64px);
  border-radius: 34px;
  background:
    radial-gradient(80% 100% at 100% 0%, rgba(222, 92, 128, 0.32), transparent 60%),
    radial-gradient(60% 80% at 0% 100%, rgba(169, 74, 134, 0.28), transparent 60%),
    linear-gradient(140deg, #3a2231 0%, #291722 100%);
  color: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.petal-panel::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.petal-panel h3 {
  font-size: clamp(1.6rem, 2.6vw, 2.3rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.03em;
}

.petal-copy > p:not(.section-eyebrow) {
  margin-top: 16px;
  max-width: 600px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14.5px;
  line-height: 1.9;
}

.petal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: 30px;
}

.petal-list li {
  display: flex;
  flex-direction: column;
}

.petal-list strong {
  font-size: clamp(24px, 2.6vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #ffd6e2;
}

.petal-list .small {
  font-size: 0.5em;
  font-weight: 600;
}

.petal-list span {
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
}

.petal-visual {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 240px;
}

.petal-coin {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 128px;
  height: 128px;
  border-radius: 50%;
  color: #7a2f4c;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.08em;
  background: linear-gradient(145deg, #ffe4ec 0%, #f7b6c8 55%, #e88aa6 100%);
  box-shadow:
    0 24px 50px -18px rgba(0, 0, 0, 0.5),
    0 0 0 8px rgba(255, 255, 255, 0.06);
  animation: float 7s ease-in-out infinite;
}

.petal-orbit {
  position: absolute;
  border: 1px solid rgba(255, 214, 226, 0.2);
  border-radius: 50%;
}

.petal-orbit--1 {
  width: 180px;
  height: 180px;
}

.petal-orbit--2 {
  width: 236px;
  height: 236px;
  border-style: dashed;
  animation: spin 26s linear infinite;
}

.petal-orbit--3 {
  width: 300px;
  height: 300px;
  border-color: rgba(255, 214, 226, 0.1);
}

.petal-orbit--2::after {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ffd6e2;
  box-shadow: 0 0 16px 4px rgba(255, 214, 226, 0.5);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============ 三步开始 ============ */
.steps {
  padding-top: 0;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.step-card {
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.step-num {
  display: block;
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(198, 63, 102, 0.4);
  transition: -webkit-text-stroke-color 0.3s ease;
}

.step-card:hover .step-num {
  -webkit-text-stroke-color: var(--rose-500);
}

.step-card h3 {
  margin-top: 18px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.step-card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

/* ============ 用户评价 ============ */
.reviews {
  position: relative;
  background:
    radial-gradient(60% 50% at 100% 0%, rgba(253, 232, 238, 0.8), transparent 65%),
    linear-gradient(180deg, rgba(255, 245, 247, 0.65), rgba(255, 249, 246, 0));
}

.reviews-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: clamp(40px, 5vw, 60px);
}

.reviews-head h2 {
  font-size: clamp(2rem, 3.7vw, 3.25rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.035em;
}

.rating-summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 22px;
  border-radius: 18px;
  border: 1px solid rgba(198, 63, 102, 0.12);
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow-sm);
}

.rating-summary > strong {
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.rating-summary div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rating-summary span:last-child {
  color: var(--muted);
  font-size: 11.5px;
}

.stars {
  color: #e2a44a;
  font-size: 13px;
  letter-spacing: 0.14em;
  line-height: 1.4;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.review-card {
  padding: 28px;
  border-radius: 22px;
  border: 1px solid rgba(198, 63, 102, 0.09);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 18px 40px -36px rgba(90, 31, 56, 0.45);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.35s ease, background-color 0.35s ease;
}

.review-card:hover {
  transform: translateY(-6px);
  background: #fff;
  box-shadow: 0 28px 56px -34px rgba(90, 31, 56, 0.4);
}

.review-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.avatar {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: none;
  border-radius: 50%;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(140deg, #f6b3c4, #d95c7f);
  box-shadow: 0 8px 18px -10px rgba(198, 63, 102, 0.6);
}

.avatar--2 { background: linear-gradient(140deg, #f3c4b2, #d98269); }
.avatar--3 { background: linear-gradient(140deg, #d7b8e6, #9a6bb5); }
.avatar--4 { background: linear-gradient(140deg, #b9d4e8, #6f96b8); }
.avatar--5 { background: linear-gradient(140deg, #e9cfa8, #c19a5c); }
.avatar--6 { background: linear-gradient(140deg, #eeb6b9, #c96f77); }

.review-user {
  display: flex;
  flex-direction: column;
  line-height: 1.4;
  min-width: 0;
}

.review-user strong {
  font-size: 14.5px;
  font-weight: 700;
}

.review-user span {
  color: var(--muted);
  font-size: 11.5px;
}

.review-top .stars {
  margin-left: auto;
  font-size: 11px;
}

.review-card > p {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.9;
}

/* ============ 常见问题 ============ */
.faq {
  padding-top: 0;
}

.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(36px, 6vw, 96px);
  align-items: start;
}

.faq-intro {
  position: sticky;
  top: calc(var(--header-h) + 36px);
}

.faq-intro h2 {
  font-size: clamp(2rem, 3.7vw, 3.25rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.035em;
}

.faq-intro > p:not(.section-eyebrow) {
  margin: 18px 0 28px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

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

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  padding: 24px 4px;
  text-align: left;
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 600;
  color: var(--plum-800);
  transition: color 0.25s ease;
}

.faq-question:hover {
  color: var(--rose-600);
}

.faq-icon {
  position: relative;
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid rgba(198, 63, 102, 0.2);
  background: rgba(255, 255, 255, 0.7);
  transition: background 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 11px;
  height: 1.6px;
  border-radius: 2px;
  background: var(--rose-600);
  transform: translate(-50%, -50%);
  transition: transform 0.3s ease, background 0.3s ease;
}

.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.is-open .faq-icon {
  background: var(--grad-main);
  border-color: transparent;
  transform: rotate(180deg);
}

.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after {
  background: #fff;
}

.faq-item.is-open .faq-icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.faq-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.38s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq-item.is-open .faq-panel {
  grid-template-rows: 1fr;
}

.faq-answer {
  overflow: hidden;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
  padding-right: 54px;
}

.faq-item.is-open .faq-answer {
  padding-bottom: 26px;
}

/* ============ 下载 ============ */
.download {
  position: relative;
  margin: 0;
  padding: clamp(84px, 10vw, 132px) 0;
  background:
    radial-gradient(70% 90% at 50% -10%, rgba(222, 92, 128, 0.38), transparent 60%),
    radial-gradient(50% 60% at 90% 90%, rgba(169, 74, 134, 0.28), transparent 65%),
    linear-gradient(165deg, #33202e 0%, #24141d 60%, #1b0e15 100%);
  color: #fff;
  overflow: hidden;
}

.download-glow {
  position: absolute;
  top: -160px;
  left: 50%;
  width: 760px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 170, 195, 0.22), transparent 68%);
  filter: blur(20px);
  transform: translateX(-50%);
  pointer-events: none;
}

.download::before,
.download::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  pointer-events: none;
}

.download::before {
  width: 620px;
  height: 620px;
  top: -300px;
  right: -180px;
}

.download::after {
  width: 460px;
  height: 460px;
  bottom: -260px;
  left: -160px;
}

.download-inner {
  position: relative;
  z-index: 2;
  max-width: 920px;
  text-align: center;
}

.download h2 {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.download h2 em {
  font-style: normal;
  background: linear-gradient(120deg, #ffd8e3 0%, #ffb0c5 45%, #e4b87c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.download-desc {
  max-width: 580px;
  margin: 22px auto 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: clamp(14.5px, 1.3vw, 16.5px);
  line-height: 1.9;
}

.download-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}

.download-meta span {
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  letter-spacing: 0.02em;
  backdrop-filter: blur(8px);
}

.download-meta strong {
  margin-left: 4px;
  color: #ffe0e8;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.download-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  max-width: 780px;
  margin: 38px auto 0;
}

.dl-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.07);
  text-align: left;
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, border-color 0.3s ease,
    background-color 0.3s ease, box-shadow 0.3s ease;
}

.dl-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-main);
  opacity: 0;
  transition: opacity 0.32s ease;
}

.dl-btn > * {
  position: relative;
  z-index: 1;
}

.dl-btn:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 26px 50px -24px rgba(0, 0, 0, 0.7);
}

.dl-btn:hover::before {
  opacity: 1;
}

.dl-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  flex: none;
  border-radius: 50%;
  color: var(--plum-900);
  background: #fff;
  box-shadow: 0 10px 22px -12px rgba(0, 0, 0, 0.55);
  transition: transform 0.3s ease, background-color 0.3s ease,
    color 0.3s ease;
}

.dl-icon .icon {
  width: 25px;
  height: 25px;
}

.dl-btn:hover .dl-icon {
  transform: scale(1.06);
  color: var(--plum-900);
  background: #fff;
}

.dl-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.dl-text strong {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.dl-text small {
  color: rgba(255, 255, 255, 0.56);
  font-size: 11.5px;
  letter-spacing: 0.02em;
}

.dl-btn:hover .dl-text small {
  color: rgba(255, 255, 255, 0.82);
}

.dl-arrow {
  display: grid;
  place-items: center;
  margin-left: auto;
  width: 36px;
  height: 36px;
  flex: none;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.8);
  transition: transform 0.3s ease, background-color 0.3s ease,
    border-color 0.3s ease;
}

.dl-arrow .icon {
  width: 16px;
  height: 16px;
}

.dl-btn:hover .dl-arrow {
  transform: translateX(3px);
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.3);
}

.download-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  color: rgba(255, 255, 255, 0.42);
  font-size: 12px;
  letter-spacing: 0.01em;
}

.download-note .icon {
  width: 14px;
  height: 14px;
  color: rgba(255, 214, 226, 0.7);
}

/* 花瓣飘落 */
.petal-field {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}

.petal {
  position: absolute;
  top: -8%;
  width: var(--size, 12px);
  height: var(--size, 12px);
  border-radius: 60% 0 60% 0;
  background: linear-gradient(135deg, rgba(255, 220, 230, 0.9), rgba(236, 127, 155, 0.75));
  opacity: var(--opacity, 0.5);
  animation: petal-fall var(--duration, 16s) linear infinite;
  animation-delay: var(--delay, 0s);
  filter: blur(var(--blur, 0px));
}

@keyframes petal-fall {
  0% {
    transform: translate3d(0, -10vh, 0) rotate(0deg);
  }
  100% {
    transform: translate3d(var(--drift, 40px), 115vh, 0) rotate(680deg);
  }
}

/* ============ 页脚 ============ */
.site-footer {
  padding: clamp(52px, 6vw, 76px) 0 28px;
  background: var(--cream);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(2, minmax(0, 0.7fr));
  gap: clamp(32px, 5vw, 72px);
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line);
}

.footer-brand p {
  max-width: 380px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.85;
}

.logo-badge--footer {
  width: 40px;
  height: 40px;
  border-radius: 12px;
}

.age-badge {
  display: inline-flex;
  margin-top: 14px !important;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid rgba(198, 63, 102, 0.16);
  background: var(--rose-50);
  color: var(--rose-600) !important;
  font-size: 11.5px !important;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  margin-bottom: 4px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--plum-800);
}

.footer-col a {
  width: fit-content;
  color: var(--muted);
  font-size: 13.5px;
  transition: color 0.22s ease, transform 0.22s ease;
}

.footer-col a:hover {
  color: var(--rose-600);
  transform: translateX(2px);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding-top: 22px;
  color: var(--muted);
  font-size: 12px;
}

/* ============ 返回顶部 & 提示 ============ */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  color: #fff;
  background: var(--grad-main);
  box-shadow: 0 14px 30px -12px rgba(198, 63, 102, 0.7);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-top .icon {
  width: 18px;
  height: 18px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 150;
  max-width: calc(100% - 40px);
  padding: 12px 20px;
  border-radius: 999px;
  background: rgba(41, 23, 34, 0.94);
  color: #fff;
  font-size: 13px;
  text-align: center;
  box-shadow: 0 18px 40px -16px rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 14px);
  transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s ease;
}

.toast.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

/* ============ 响应式 ============ */
@media (max-width: 1100px) {
  .hero-visual {
    min-height: 520px;
  }

  .float-chip--a {
    left: 2%;
  }

  .float-chip--b {
    right: 2%;
  }
}

@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .review-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-grid {
    gap: 28px;
  }
}

@media (max-width: 960px) {
  .main-nav {
    position: fixed;
    top: calc(var(--header-h) + 10px);
    left: 16px;
    right: 16px;
    z-index: 99;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    margin: 0;
    padding: 12px;
    border-radius: 20px;
    border: 1px solid rgba(198, 63, 102, 0.12);
    background: rgba(255, 252, 250, 0.98);
    box-shadow: 0 28px 60px -24px rgba(70, 22, 43, 0.4);
    backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s ease;
  }

  .site-header.menu-open .main-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-link {
    padding: 13px 16px;
    border-radius: 12px;
    font-size: 15px;
  }

  .nav-link.is-active {
    background: var(--rose-50);
  }

  .nav-link.is-active::after {
    display: none;
  }

  .nav-link--download {
    margin: 4px 0 0;
    text-align: center;
  }

  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding-top: 40px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 48px;
  }

  .hero-copy {
    max-width: 680px;
  }

  .hero-desc {
    max-width: 620px;
  }

  .hero-visual {
    min-height: 0;
    padding: 8px 0 12px;
  }

  .shot-deck {
    max-width: 500px;
    height: 540px;
  }

  .shot-card {
    width: clamp(200px, 34vw, 240px);
  }

  .stat-strip {
    margin-top: 54px;
  }

  .petal-panel {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .petal-visual {
    min-height: 260px;
  }

  .faq-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }

  .faq-intro {
    position: static;
  }

  .faq-intro > p:not(.section-eyebrow) {
    margin-bottom: 22px;
  }

  .footer-top {
    grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 0.8fr));
    gap: 32px;
  }
}

@media (max-width: 760px) {
  :root {
    --header-h: 70px;
  }

  .container {
    width: calc(100% - 40px);
  }

  .brand-text strong {
    font-size: 16px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 10.5vw, 3.6rem);
  }

  .hero-cta .btn {
    flex: 1 1 200px;
  }

  .stat-strip {
    grid-template-columns: repeat(2, 1fr);
    border-radius: 20px;
  }

  .stat-item {
    padding: 22px 16px;
  }

  .stat-item:nth-child(odd)::before {
    display: none;
  }

  .stat-item:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .reviews-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
  }

  .download-actions {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .footer-top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .faq-answer {
    padding-right: 10px;
  }
}

@media (max-width: 640px) {
  .feature-grid,
  .review-grid,
  .step-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .feature-grid .reveal,
  .review-grid .reveal,
  .step-grid .reveal {
    transition-delay: 0s !important;
  }

  .step-card {
    padding-top: 24px;
  }

  .step-num {
    font-size: 36px;
  }

  .shot-deck {
    max-width: 420px;
    height: 480px;
  }

  .shot-card {
    width: clamp(176px, 46vw, 220px);
  }

  .float-chip {
    display: none;
  }

  .rating-summary {
    padding: 12px 18px;
  }

  .rating-summary > strong {
    font-size: 36px;
  }

  .download-meta span {
    padding: 7px 12px;
    font-size: 11px;
  }

  .dl-btn {
    padding: 18px 20px;
    gap: 14px;
  }
}

@media (max-width: 460px) {
  .eyebrow {
    font-size: 11px;
    letter-spacing: 0.04em;
    padding-right: 12px;
  }

  .version-row {
    gap: 8px;
  }

  .version-pill {
    padding: 8px 12px;
    font-size: 11.5px;
  }

  .version-pill strong {
    font-size: 12px;
  }

  .hero-cta {
    gap: 10px;
  }

  .hero-cta .btn {
    flex: 1 1 100%;
  }

  .shot-deck {
    height: 440px;
  }

  .shot-card {
    width: clamp(160px, 47vw, 196px);
  }

  .shot-frame {
    padding: 7px;
    border-radius: 30px;
  }

  .shot-screen {
    border-radius: 24px;
  }

  .petal-list {
    gap: 20px;
    justify-content: space-between;
  }

  .section-head,
  .reviews-head {
    margin-bottom: 34px;
  }

  .back-top {
    right: 16px;
    bottom: 16px;
  }

  .toast {
    bottom: 84px;
    font-size: 12px;
  }

  .footer-top {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }
}

/* ============ 减少动效 ============ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

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

  .petal-field {
    display: none;
  }
}