/* ============================================================
   错题存钱罐 · 宣传落地页
   风格参考 mineru.net：现代 SaaS 官网风
   深色渐变 Hero + 毛玻璃导航 + 圆角卡片 + hover 上浮 + 响应式
   ============================================================ */

:root {
	--primary: #FFA726;
	--primary-deep: #FF9800;
	--grad-1: #FFA726;
	--grad-2: #FF7043;
	--grad-3: #8C46FF;
	--grad-4: #1543FE;
	--ink: #121316;
	--ink-2: #464A53;
	--ink-3: #8A8F98;
	--bg: #F7F8FA;
	--card: #FFFFFF;
	--radius: 20px;
	--radius-lg: 28px;
	--nav-h: 68px;
	--shadow: 0 8px 30px rgba(18, 19, 22, 0.08);
	--shadow-hover: 0 18px 48px rgba(18, 19, 22, 0.14);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
	font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
	color: var(--ink);
	background: var(--bg);
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }

/* ---------- 渐变文字 ---------- */
.grad-text {
	background: linear-gradient(100deg, var(--grad-1), var(--grad-2) 45%, var(--grad-3));
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: transparent;
	color: transparent;
}

/* ---------- 通用按钮 ---------- */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	border-radius: 999px;
	font-weight: 600;
	transition: all 0.25s ease;
	white-space: nowrap;
}
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-primary {
	background: linear-gradient(120deg, var(--grad-1), var(--grad-2));
	color: #fff;
	box-shadow: 0 8px 24px rgba(255, 167, 38, 0.35);
}
.btn-primary:hover {
	transform: translateY(-2px);
	box-shadow: 0 12px 32px rgba(255, 167, 38, 0.45);
}
.btn-ghost {
	color: #fff;
	border: 1.5px solid rgba(255, 255, 255, 0.35);
	background: rgba(255, 255, 255, 0.06);
	backdrop-filter: blur(8px);
}
.btn-ghost:hover {
	background: rgba(255, 255, 255, 0.14);
	border-color: rgba(255, 255, 255, 0.55);
	transform: translateY(-2px);
}
.btn-icon { font-size: 18px; }

/* ---------- Section 公共 ---------- */
.section-head {
	text-align: center;
	max-width: 720px;
	margin: 0 auto 56px;
	padding: 0 24px;
}
.section-tag {
	display: inline-block;
	font-size: 13px;
	font-weight: 600;
	color: var(--primary-deep);
	background: #FFF3E0;
	padding: 6px 16px;
	border-radius: 999px;
	margin-bottom: 16px;
	letter-spacing: 1px;
}
.section-title {
	font-size: 36px;
	font-weight: 800;
	line-height: 1.3;
	letter-spacing: -0.5px;
}
.section-desc {
	margin-top: 14px;
	font-size: 16px;
	color: var(--ink-2);
}

/* ============================================================
   导航
   ============================================================ */
.nav {
	position: fixed;
	top: 0; left: 0; right: 0;
	height: var(--nav-h);
	z-index: 100;
	background: rgba(18, 19, 22, 0.72);
	backdrop-filter: blur(16px);
	-webkit-backdrop-filter: blur(16px);
	border-bottom: 1px solid rgba(255, 255, 255, 0.08);
	transition: background 0.3s ease;
}
.nav.scrolled { background: rgba(18, 19, 22, 0.92); }
.nav-inner {
	max-width: 1200px;
	height: 100%;
	margin: 0 auto;
	padding: 0 28px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo-img { width: 42px; height: 42px; }
.nav-logo-text { font-size: 20px; font-weight: 700; color: #fff; letter-spacing: 0.5px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a {
	font-size: 14px;
	color: rgba(255, 255, 255, 0.72);
	transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--primary); }
.nav-right { display: flex; align-items: center; gap: 14px; }
.nav-cta { color: #fff !important; }
.nav-burger {
	display: none;
	flex-direction: column;
	gap: 5px;
	padding: 8px;
}
.nav-burger span {
	width: 22px; height: 2px;
	background: #fff;
	border-radius: 2px;
	transition: all 0.3s ease;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
	position: relative;
	background: var(--ink);
	color: #fff;
	padding: calc(var(--nav-h) + 72px) 0 0;
	overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-orb {
	position: absolute;
	border-radius: 50%;
	filter: blur(90px);
	opacity: 0.5;
	animation: orb-float 12s ease-in-out infinite alternate;
}
.orb-1 { width: 480px; height: 480px; background: #FFA726; top: -140px; left: -100px; }
.orb-2 { width: 420px; height: 420px; background: #8C46FF; top: 20px; right: -120px; animation-delay: -4s; }
.orb-3 { width: 360px; height: 360px; background: #1543FE; bottom: -160px; left: 40%; animation-delay: -8s; opacity: 0.35; }
@keyframes orb-float {
	from { transform: translateY(-20px) scale(1); }
	to { transform: translateY(24px) scale(1.08); }
}
.hero-grid {
	position: absolute; inset: 0;
	background-image:
		linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
		linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
	background-size: 56px 56px;
	mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 75%);
	-webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 75%);
}

.hero-inner {
	position: relative;
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 28px;
	display: grid;
	grid-template-columns: 1.1fr 0.9fr;
	gap: 48px;
	align-items: center;
}
.hero-badge {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	font-size: 13px;
	font-weight: 500;
	color: #FFD54F;
	background: rgba(255, 167, 38, 0.12);
	border: 1px solid rgba(255, 167, 38, 0.3);
	padding: 7px 16px;
	border-radius: 999px;
	margin-bottom: 22px;
}
.badge-dot {
	width: 7px; height: 7px;
	border-radius: 50%;
	background: #FFD54F;
	box-shadow: 0 0 0 4px rgba(255, 213, 79, 0.25);
	animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
	0%, 100% { box-shadow: 0 0 0 4px rgba(255, 213, 79, 0.25); }
	50% { box-shadow: 0 0 0 8px rgba(255, 213, 79, 0.08); }
}
.hero-title {
	font-size: 58px;
	font-weight: 800;
	line-height: 1.18;
	letter-spacing: -1.5px;
	margin-bottom: 22px;
}
.hero-sub {
	font-size: 17px;
	color: rgba(255, 255, 255, 0.78);
	max-width: 520px;
	margin-bottom: 32px;
}
.hero-sub b { color: #fff; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }
.hero-meta {
	display: flex;
	gap: 20px;
	flex-wrap: wrap;
	font-size: 13.5px;
	color: rgba(255, 255, 255, 0.6);
}

/* 手机壳 */
.hero-phone { position: relative; display: flex; justify-content: center; }
.phone-frame {
	position: relative;
	width: 268px;
	padding: 14px 8px;
	border-radius: 42px;
	background: linear-gradient(160deg, #3A3F4B, #1A1C22 60%, #101114);
	border: 1.5px solid rgba(255, 255, 255, 0.14);
	box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5), inset 0 0 0 2px rgba(255, 255, 255, 0.04);
	z-index: 2;
}
.phone-notch {
	position: absolute;
	top: 9px; left: 50%;
	transform: translateX(-50%);
	width: 92px; height: 22px;
	background: #101114;
	border-radius: 999px;
	z-index: 3;
}
.phone-screen {
	width: 100%;
	border-radius: 32px;
	aspect-ratio: 9 / 19;
	object-fit: cover;
	background: #fff;
}
.phone-shadow {
	position: absolute;
	left: 10%; right: 10%; bottom: -18px;
	height: 40px;
	background: radial-gradient(ellipse, rgba(255, 167, 38, 0.35), transparent 70%);
	filter: blur(12px);
	z-index: -1;
}
.phone-float-card {
	position: absolute;
	display: flex;
	align-items: center;
	gap: 10px;
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(10px);
	border-radius: 14px;
	padding: 10px 14px;
	box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
	animation: float-card 5s ease-in-out infinite;
	z-index: 3;
}
.float-card-1 { top: 22%; left: -26px; animation-delay: 0s; }
.float-card-2 { bottom: 24%; right: -30px; animation-delay: -2.5s; }
@keyframes float-card {
	0%, 100% { transform: translateY(0); }
	50% { transform: translateY(-10px); }
}
.fc-icon {
	width: 36px; height: 36px;
	border-radius: 10px;
	display: flex; align-items: center; justify-content: center;
	font-size: 18px;
	background: #FFF3E0;
}
.fc-text { display: flex; flex-direction: column; line-height: 1.3; }
.fc-text strong { font-size: 14px; color: var(--ink); }
.fc-text span { font-size: 11.5px; color: var(--ink-3); }

/* Hero 统计条 */
.hero-stats {
	position: relative;
	max-width: 1200px;
	margin: 72px auto 0;
	padding: 40px 28px;
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	align-items: center;
	gap: 20px;
	border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.stat { text-align: center; }
.stat-num {
	font-size: 42px;
	font-weight: 800;
	background: linear-gradient(120deg, #FFD54F, var(--primary), #FF7043);
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: transparent;
	display: block;
	line-height: 1.15;
}
.stat-num em { font-style: normal; font-size: 22px; margin-left: 2px; }
.stat-label {
	display: block;
	margin-top: 6px;
	font-size: 13px;
	color: rgba(255, 255, 255, 0.55);
	line-height: 1.5;
}
.stat-divider { width: 1px; height: 56px; background: rgba(255, 255, 255, 0.12); justify-self: center; }

/* ============================================================
   痛点
   ============================================================ */
.problem { padding: 96px 0 40px; }
.problem-grid {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 28px;
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 20px;
}
.problem-card {
	background: var(--card);
	border-radius: var(--radius);
	padding: 28px 24px;
	box-shadow: var(--shadow);
	border: 1px solid rgba(18, 19, 22, 0.04);
	transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.problem-card:hover {
	transform: translateY(-6px);
	box-shadow: var(--shadow-hover);
}
.pc-icon { font-size: 30px; margin-bottom: 14px; }
.problem-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.problem-card p { font-size: 14px; color: var(--ink-2); }

/* ============================================================
   功能亮点
   ============================================================ */
.features {
	padding: 80px 0;
	background: linear-gradient(180deg, #fff, var(--bg));
}
.feature-grid {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 28px;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
}
.feature-card {
	background: var(--card);
	border-radius: var(--radius);
	padding: 32px 28px;
	box-shadow: var(--shadow);
	border: 1px solid rgba(18, 19, 22, 0.04);
	transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.feature-card:hover {
	transform: translateY(-6px);
	box-shadow: var(--shadow-hover);
}
.f-icon {
	width: 52px; height: 52px;
	border-radius: 14px;
	display: flex; align-items: center; justify-content: center;
	font-size: 26px;
	margin-bottom: 18px;
	background: color-mix(in srgb, var(--fc) 12%, #fff);
}
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14.5px; color: var(--ink-2); }

/* ============================================================
   双端界面
   ============================================================ */
.showcase {
	padding: 80px 0;
	background: var(--ink);
	color: #fff;
}
.showcase .section-tag { background: rgba(255, 167, 38, 0.15); color: #FFD54F; }
.showcase .section-desc { color: rgba(255, 255, 255, 0.6); }

.showcase-tabs {
	display: flex;
	justify-content: center;
	gap: 12px;
	margin-bottom: 48px;
}
.st-tab {
	padding: 10px 28px;
	border-radius: 999px;
	font-size: 15px;
	font-weight: 600;
	color: rgba(255, 255, 255, 0.6);
	background: rgba(255, 255, 255, 0.06);
	border: 1px solid rgba(255, 255, 255, 0.12);
	transition: all 0.25s ease;
}
.st-tab:hover { color: #fff; }
.st-tab.active {
	color: var(--ink);
	background: linear-gradient(120deg, var(--grad-1), var(--grad-2));
	border-color: transparent;
}

.showcase-panel {
	display: none;
	max-width: 860px;
	margin: 0 auto;
	padding: 0 28px;
	flex-direction: column;
	align-items: center;
	gap: 36px;
}
.showcase-panel.active { display: flex; }

/* ---- 大图展示台 ---- */
.phone-stage {
	position: relative;
	text-align: center;
}
.phone-stage .phone-frame {
	width: 252px;
	transition: transform 0.35s ease;
}
.phone-stage .phone-frame:hover { transform: translateY(-6px) scale(1.02); }
.stage-glow {
	position: absolute;
	top: 12%; left: 50%;
	transform: translateX(-50%);
	width: 420px; height: 420px;
	background: radial-gradient(ellipse, rgba(255, 167, 38, 0.22), rgba(140, 70, 255, 0.12) 55%, transparent 75%);
	filter: blur(50px);
	pointer-events: none;
	z-index: 0;
}
.phone-stage .phone-frame, .phone-stage .stage-caption { position: relative; z-index: 1; }
.stage-caption {
	margin-top: 22px;
	font-size: 15px;
	font-weight: 500;
	color: rgba(255, 255, 255, 0.8);
	letter-spacing: 0.3px;
}

/* 大图切换动画 */
.phone-screen {
	transition: opacity 0.3s ease, transform 0.3s ease;
}
.phone-screen.switching { opacity: 0; transform: scale(0.97); }

/* ---- 底部缩略图条（横排可滚动） ---- */
.phone-rail {
	display: flex;
	flex-direction: row;
	gap: 22px;
	width: 100%;
	max-width: 640px;
	overflow-x: auto;
	padding: 8px 4px 14px;
	scrollbar-width: thin;
	scrollbar-color: rgba(255, 255, 255, 0.25) transparent;
}
/* 缩略图条内容居中；safe 关键字保证内容超宽时回退为左对齐、可正常滚动 */
.phone-rail {
	justify-content: safe center;
}
.phone-rail .phone-thumb:first-child { margin-left: auto; }
.phone-rail .phone-thumb:last-child { margin-right: auto; }
.phone-rail::-webkit-scrollbar { height: 5px; }
.phone-rail::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.06); border-radius: 99px; }
.phone-rail::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.25); border-radius: 99px; }

.phone-thumb {
	position: relative;
	flex-shrink: 0;
	width: 76px;
	border-radius: 14px;
	overflow: hidden;
	border: 2px solid rgba(255, 255, 255, 0.14);
	opacity: 0.55;
	transition: all 0.25s ease;
	cursor: pointer;
}
.phone-thumb:hover {
	opacity: 0.9;
	transform: translateY(-4px);
	border-color: rgba(255, 255, 255, 0.4);
}
.phone-thumb.active {
	opacity: 1;
	border-color: var(--primary);
	box-shadow: 0 0 0 3px rgba(255, 167, 38, 0.28), 0 10px 24px rgba(255, 167, 38, 0.18);
	transform: translateY(-6px);
}
.phone-thumb img { width: 100%; aspect-ratio: 9/19; object-fit: cover; }
.phone-thumb .thumb-index {
	position: absolute;
	top: 5px; left: 5px;
	width: 18px; height: 18px;
	border-radius: 50%;
	background: rgba(18, 19, 22, 0.6);
	color: #fff;
	font-size: 10px;
	font-weight: 700;
	display: flex; align-items: center; justify-content: center;
	backdrop-filter: blur(4px);
}

/* ============================================================
   科学方法
   ============================================================ */
.method { padding: 96px 0; }
.method-grid {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 28px;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
}
.method-card {
	position: relative;
	background: var(--card);
	border-radius: var(--radius);
	padding: 32px 28px 28px;
	box-shadow: var(--shadow);
	border: 1px solid rgba(18, 19, 22, 0.04);
	overflow: hidden;
	transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.method-card:hover {
	transform: translateY(-6px);
	box-shadow: var(--shadow-hover);
}
.m-num {
	position: absolute;
	top: 14px; right: 20px;
	font-size: 44px;
	font-weight: 800;
	color: rgba(18, 19, 22, 0.06);
	line-height: 1;
}
.method-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.method-card p { font-size: 14px; color: var(--ink-2); }

/* ============================================================
   使用流程
   ============================================================ */
.flow {
	padding: 96px 0 80px;
	background: linear-gradient(180deg, var(--bg), #fff);
}
.flow-steps {
	max-width: 1100px;
	margin: 0 auto;
	padding: 0 28px;
	display: flex;
	align-items: flex-start;
	justify-content: center;
	gap: 16px;
	flex-wrap: wrap;
}
.flow-step {
	flex: 1;
	min-width: 200px;
	max-width: 240px;
	text-align: center;
	padding: 32px 20px;
	background: var(--card);
	border-radius: var(--radius);
	box-shadow: var(--shadow);
	position: relative;
	transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.flow-step:hover {
	transform: translateY(-6px);
	box-shadow: var(--shadow-hover);
}
.fs-num {
	position: absolute;
	top: -14px; left: 50%;
	transform: translateX(-50%);
	width: 28px; height: 28px;
	border-radius: 50%;
	background: linear-gradient(120deg, var(--grad-1), var(--grad-2));
	color: #fff;
	font-size: 14px;
	font-weight: 700;
	display: flex; align-items: center; justify-content: center;
	box-shadow: 0 4px 12px rgba(255, 167, 38, 0.4);
}
.fs-icon { font-size: 34px; margin-bottom: 14px; }
.flow-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.flow-step p { font-size: 13.5px; color: var(--ink-2); }
.flow-arrow {
	align-self: center;
	font-size: 26px;
	color: var(--primary-deep);
	padding-top: 30px;
	font-weight: 300;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq { padding: 80px 0; }
.faq-list {
	max-width: 780px;
	margin: 0 auto;
	padding: 0 28px;
}
.faq-item {
	background: var(--card);
	border-radius: 16px;
	margin-bottom: 12px;
	box-shadow: var(--shadow);
	border: 1px solid rgba(18, 19, 22, 0.04);
	overflow: hidden;
}
.faq-q {
	width: 100%;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	padding: 20px 24px;
	font-size: 15.5px;
	font-weight: 600;
	color: var(--ink);
	text-align: left;
	transition: color 0.2s ease;
}
.faq-q:hover { color: var(--primary-deep); }
.faq-arrow {
	font-size: 14px;
	color: var(--ink-3);
	transition: transform 0.3s ease;
	flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--primary-deep); }
.faq-a {
	max-height: 0;
	overflow: hidden;
	transition: max-height 0.35s ease;
}
.faq-a p {
	padding: 0 24px 20px;
	font-size: 14.5px;
	color: var(--ink-2);
}

/* ============================================================
   下载 CTA
   ============================================================ */
.download { padding: 40px 0 96px; }
.dl-card {
	max-width: 1000px;
	margin: 0 auto;
	padding: 48px 56px;
	display: grid;
	grid-template-columns: 1fr auto;
	gap: 40px;
	align-items: center;
	border-radius: var(--radius-lg);
	background: linear-gradient(135deg, #FFF8EF, #FFF0E0 55%, #F3E8FF);
	border: 1px solid rgba(255, 167, 38, 0.2);
	box-shadow: 0 24px 64px rgba(255, 167, 38, 0.15);
}
.dl-title { font-size: 34px; font-weight: 800; line-height: 1.3; margin-bottom: 14px; }
.dl-desc { font-size: 15.5px; color: var(--ink-2); max-width: 480px; margin-bottom: 20px; }
.dl-points { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13.5px; color: var(--ink-2); }
.dl-right { text-align: center; }
.dl-qr {
	width: 172px; height: 172px;
	border-radius: 20px;
	background: #fff;
	padding: 10px;
	box-shadow: 0 12px 36px rgba(18, 19, 22, 0.15);
	margin: 0 auto 12px;
}
.dl-hint { font-size: 13.5px; font-weight: 600; color: var(--ink-2); }

/* ============================================================
   页脚
   ============================================================ */
.footer {
	background: var(--ink);
	color: rgba(255, 255, 255, 0.6);
	padding: 48px 0;
}
.footer-inner {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 28px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-logo { width: 36px; height: 36px; }
.footer-brand p { font-size: 13.5px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 13.5px; color: rgba(255, 255, 255, 0.55); transition: color 0.2s; }
.footer-links a:hover { color: var(--primary); }
.footer-copy { width: 100%; text-align: center; font-size: 12.5px; color: rgba(255, 255, 255, 0.35); margin-top: 20px; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
	.hero-title { font-size: 46px; }
	.hero-inner { grid-template-columns: 1fr; gap: 56px; text-align: center; }
	.hero-text { display: flex; flex-direction: column; align-items: center; }
	.hero-sub { margin-left: auto; margin-right: auto; }
	.hero-cta { justify-content: center; }
	.hero-meta { justify-content: center; }
	.hero-phone { margin-top: 10px; }
	.phone-float-card.float-card-1 { left: 6%; }
	.phone-float-card.float-card-2 { right: 6%; }
	.problem-grid { grid-template-columns: repeat(2, 1fr); }
	.feature-grid { grid-template-columns: repeat(2, 1fr); }
	.method-grid { grid-template-columns: repeat(2, 1fr); }
	.hero-stats { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
	.stat-divider { display: none; }
}

@media (max-width: 768px) {
	.nav-links {
		position: fixed;
		top: var(--nav-h);
		left: 0; right: 0;
		flex-direction: column;
		background: rgba(18, 19, 22, 0.97);
		backdrop-filter: blur(16px);
		padding: 16px 28px 24px;
		gap: 0;
		transform: translateY(-120%);
		transition: transform 0.3s ease;
		z-index: 99;
	}
	.nav-links.open { transform: translateY(0); }
	.nav-links a { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.06); font-size: 15px; }
	.nav-links a:last-child { border-bottom: none; }
	.nav-burger { display: flex; }
	.nav-cta { display: none; }

	.hero { padding-top: calc(var(--nav-h) + 48px); }
	.hero-title { font-size: 36px; letter-spacing: -0.8px; }
	.hero-sub { font-size: 15.5px; }
	.section-title { font-size: 27px; }
	.section-desc { font-size: 14.5px; }
	.problem { padding: 64px 0 24px; }
	.problem-grid { grid-template-columns: 1fr; }
	.feature-grid { grid-template-columns: 1fr; }
	.method-grid { grid-template-columns: 1fr; }
	.features, .showcase, .flow, .faq, .method { padding: 64px 0; }
	.download { padding: 16px 0 64px; }

	.showcase-panel, .showcase-panel.active { flex-direction: column; gap: 24px; }
	.phone-stage .phone-frame { width: 210px; margin: 0 auto; }
	.stage-glow { width: 300px; height: 300px; }
	.phone-rail { max-width: 100%; padding: 6px 2px 12px; }
	.phone-thumb { width: 62px; }

	.flow-steps { flex-direction: column; align-items: center; gap: 20px; }
	.flow-step { max-width: 320px; width: 100%; }
	.flow-arrow { transform: rotate(90deg); padding: 4px 0; }

	.dl-card { grid-template-columns: 1fr; text-align: center; padding: 36px 28px; gap: 28px; }
	.dl-desc { margin-left: auto; margin-right: auto; }
	.dl-points { justify-content: center; }
	.footer-inner { justify-content: center; text-align: center; }
	.footer-links { justify-content: center; flex-wrap: wrap; }
}

/* ============================================================
   线性 SVG 图标（替换 emoji）
   ============================================================ */
.ico {
	width: 1em;
	height: 1em;
	flex-shrink: 0;
	display: inline-block;
	vertical-align: -0.15em;
}

/* Hero 按钮扫码图标 */
.btn-icon .ico { width: 18px; height: 18px; }

/* Hero 勾选列表 */
.hero-meta .ico { width: 15px; height: 15px; color: #66BB6A; margin-right: 2px; }

/* Hero 浮动卡 */
.fc-icon .ico { width: 20px; height: 20px; color: #E07B00; }
.fc-icon:has(.ico) { font-size: 0; }

/* 痛点卡片 */
.pc-icon { font-size: 30px; margin-bottom: 14px; }
.pc-icon .ico { width: 30px; height: 30px; color: var(--primary-deep); }

/* 功能亮点 */
.f-icon { font-size: 0; }
.f-icon .ico { width: 26px; height: 26px; color: var(--fc); }

/* 双端 tab */
.st-tab .ico { width: 17px; height: 17px; margin-right: 6px; vertical-align: -3px; }

/* 使用流程 */
.fs-icon { font-size: 0; margin-bottom: 14px; }
.fs-icon .ico { width: 34px; height: 34px; color: var(--primary-deep); }

/* 下载区勾选 */
.dl-points .ico { width: 15px; height: 15px; color: #66BB6A; margin-right: 2px; }

/* 备案号 */
.footer-icp {
	width: 100%;
	text-align: center;
	margin-top: 8px;
}
.footer-icp a {
	font-size: 12.5px;
	color: rgba(255, 255, 255, 0.35);
	transition: color 0.2s;
}
.footer-icp a:hover { color: rgba(255, 255, 255, 0.7); }

/* ============================================================
   路线规划 Roadmap
   ============================================================ */
.roadmap {
	padding: 96px 0;
	background: linear-gradient(180deg, #fff, var(--bg));
}
.roadmap-grid {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 28px;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 24px;
}
.rm-card {
	background: var(--card);
	border-radius: var(--radius);
	padding: 32px 28px 28px;
	box-shadow: var(--shadow);
	border: 1px solid rgba(18, 19, 22, 0.04);
	position: relative;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.rm-card .rm-list { flex: 1; }
.rm-card:hover {
	transform: translateY(-6px);
	box-shadow: var(--shadow-hover);
}
/* 阶段色条 */
.rm-card::before {
	content: "";
	position: absolute;
	top: 0; left: 0; right: 0;
	height: 4px;
}
.rm-near::before { background: linear-gradient(90deg, #FFA726, #FF7043); }
.rm-mid::before { background: linear-gradient(90deg, #8C46FF, #6C5CE7); }
.rm-far::before { background: linear-gradient(90deg, #1543FE, #22AEFF); }

.rm-phase {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 20px;
}
.rm-badge {
	font-size: 13px;
	font-weight: 700;
	padding: 5px 14px;
	border-radius: 999px;
}
.rm-near .rm-badge { background: #FFF3E0; color: #E07B00; }
.rm-mid .rm-badge { background: #F3E8FF; color: #8C46FF; }
.rm-far .rm-badge { background: #E8F0FF; color: #1543FE; }
.rm-time {
	font-size: 12px;
	color: var(--ink-3);
}

.rm-card h3 {
	font-size: 19px;
	font-weight: 700;
	margin-bottom: 18px;
}
.rm-list {
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: 14px;
}
.rm-list li {
	display: flex;
	align-items: flex-start;
	gap: 12px;
	font-size: 14px;
	color: var(--ink-2);
	line-height: 1.55;
}
.rm-list li b { color: var(--ink); }
.rm-icon {
	flex-shrink: 0;
	width: 30px; height: 22px;
	border-radius: 8px;
	display: flex; align-items: center; justify-content: center;
	background: #F5F5F5;
	margin-top: 1px;
}
.rm-icon .ico { width: 17px; height: 17px; }
.rm-near .rm-icon .ico { color: #E07B00; }
.rm-mid .rm-icon .ico { color: #8C46FF; }
.rm-far .rm-icon .ico { color: #1543FE; }

/* 响应式 */
@media (max-width: 1024px) {
	.roadmap-grid { grid-template-columns: 1fr; max-width: 560px; }
}
@media (max-width: 768px) {
	.roadmap { padding: 64px 0; }
	.roadmap-grid { padding: 0 24px; gap: 18px; }
}