/* 杩头会员 · 官网 —— 主色调取自小程序：主底色 #EBECE3 + 主色 #61B6B1（青）
   风格：明亮温暖、柔和圆润、友好亲切；核心卖点：通用卡（平台买卡，跨门店通用） */

:root {
  --bg: #EBECE3;          /* 主底色（小程序同款） */
  --bg-soft: #F2F3EC;
  --bg-2: #E4E6DB;
  --paper: #FFFFFF;
  --ink: #2B322F;         /* 中性深色文字 */
  --ink-soft: #586460;
  --muted: #8B958F;
  --teal: #61B6B1;        /* 主色调（小程序同款） */
  --teal-2: #4FA39E;
  --teal-deep: #3A827D;
  --teal-darker: #2C6C68;
  --teal-light: #9BD2CE;
  --teal-tint: #DFEEEC;
  --teal-tint-2: #E8F2F0;
  --grad-teal: linear-gradient(135deg, #74C2BC 0%, #61B6B1 50%, #4FA39E 100%);
  --line: rgba(43, 50, 47, 0.10);
  --shadow-teal: 0 22px 50px -26px rgba(58, 130, 125, 0.45);
  --shadow-soft: 0 18px 44px -24px rgba(43, 50, 47, 0.18);
  --radius: 22px;
  --radius-lg: 30px;
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 26px; }
.gold-text { background: linear-gradient(120deg, #3A827D, #61B6B1); -webkit-background-clip: text; background-clip: text; color: transparent; }
.teal-text { color: var(--teal-deep); }
.kicker {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--teal-deep);
}
.kicker::before { content: ""; width: 22px; height: 2px; border-radius: 2px; background: var(--grad-teal); }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(235, 236, 227, 0.82);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 20px; letter-spacing: .5px; color: var(--ink); }
.brand .mark {
  width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex: none; background: #fff; padding: 2px;
  box-shadow: 0 6px 16px -6px rgba(58, 130, 125, .45), 0 0 0 1px var(--line);
}
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--ink-soft); }
.nav-links a { transition: color .2s; font-weight: 500; }
.nav-links a:hover { color: var(--teal-deep); }
.nav-cta {
  padding: 10px 20px; border-radius: 999px; background: var(--grad-teal); color: #fff !important;
  font-weight: 700; font-size: 14px; box-shadow: 0 10px 24px -10px rgba(58, 130, 125, .55);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 15px 28px; border-radius: 999px; font-weight: 700; font-size: 16px;
  cursor: pointer; border: 1.5px solid transparent; transition: transform .15s ease, box-shadow .2s ease, border-color .2s, background .2s;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--grad-teal); color: #fff; box-shadow: var(--shadow-teal); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 26px 54px -22px rgba(58, 130, 125, .6); }
.btn-teal { background: var(--teal-deep); color: #fff; box-shadow: var(--shadow-teal); }
.btn-teal:hover { transform: translateY(-2px); }
.btn-ghost { background: var(--paper); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal-deep); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 70px 0 64px; overflow: hidden; }
.hero::before { content: ""; position: absolute; top: -120px; right: -80px; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(closest-side, rgba(97,182,177,.30), transparent 70%); z-index: 0; }
.hero::after { content: ""; position: absolute; bottom: -140px; left: -100px; width: 360px; height: 360px; border-radius: 50%; background: radial-gradient(closest-side, rgba(97,182,177,.18), transparent 70%); z-index: 0; }
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 52px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 15px; border-radius: 999px;
  background: var(--paper); border: 1px solid var(--line); font-size: 13px; color: var(--teal-deep); font-weight: 700;
  box-shadow: 0 8px 20px -14px rgba(58,130,125,.4);
}
.hero h1 { font-size: clamp(38px, 5.4vw, 58px); line-height: 1.14; margin: 22px 0 18px; letter-spacing: -1px; font-weight: 800; }
.hero p.lead { font-size: 18px; color: var(--ink-soft); max-width: 520px; margin: 0 0 30px; }
.hero p.lead strong { color: var(--teal-deep); }
.hero-actions { display: flex; gap: 13px; flex-wrap: wrap; align-items: center; }
.soon-note { font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 7px; margin-top: 16px; }
.soon-note .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--grad-teal); }
.hero-trust { margin-top: 30px; display: flex; gap: 24px; flex-wrap: wrap; }
.hero-trust .t { display: flex; align-items: center; gap: 9px; font-size: 14px; color: var(--ink-soft); }
.hero-trust .t .ic { width: 28px; height: 28px; border-radius: 9px; background: var(--teal-tint); display: grid; place-items: center; }
.hero-trust .t .ic svg { width: 15px; height: 15px; color: var(--teal-deep); }

/* ---------- Hero 视觉：通用卡 + 多店通用（卡在上、门店在下，不重叠） ---------- */
.hero-visual { position: relative; display: flex; flex-direction: column; align-items: center; gap: 30px; padding-top: 10px; }
.ucard {
  width: 332px; border-radius: 22px; padding: 24px 26px; color: #fff;
  background: linear-gradient(140deg, #75C4BE 0%, #5FB2AC 46%, #4A938E 100%);
  box-shadow: 0 34px 64px -26px rgba(58, 130, 125, .62), inset 0 1px 0 rgba(255,255,255,.28);
  position: relative; overflow: hidden; transform: rotate(-4deg);
}
.ucard::after { content: ""; position: absolute; top: -70px; right: -50px; width: 200px; height: 200px; border-radius: 50%; background: radial-gradient(closest-side, rgba(255,255,255,.20), transparent 72%); }
.ucard .uc-top { display: flex; justify-content: space-between; align-items: center; position: relative; z-index: 2; }
.ucard .uc-brand { font-weight: 800; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.ucard .uc-chip { width: 32px; height: 24px; border-radius: 6px; background: linear-gradient(135deg, #F4E6BC, #E7CD8A); box-shadow: inset 0 0 0 1px rgba(255,255,255,.45); }
.ucard .uc-badge { font-size: 11px; font-weight: 700; background: rgba(255,255,255,.22); padding: 3px 10px; border-radius: 999px; }
.ucard .uc-label { font-size: 12px; opacity: .9; margin-top: 22px; }
.ucard .uc-bal { font-size: 30px; font-weight: 800; letter-spacing: -.5px; margin-top: 2px; }
.ucard .uc-foot { display: flex; justify-content: space-between; align-items: flex-end; margin-top: 18px; font-size: 12px; opacity: .9; }
.ucard .uc-no { letter-spacing: 2px; }
.use-list { width: 330px; display: flex; flex-direction: column; gap: 10px; }
.use-cap { font-size: 13px; color: var(--ink-soft); font-weight: 700; text-align: center; margin-bottom: 2px; }
.use-chip {
  display: flex; align-items: center; gap: 11px; background: var(--paper); border: 1px solid var(--line); border-radius: 14px;
  padding: 11px 14px; box-shadow: var(--shadow-soft); font-size: 14px; font-weight: 700;
}
.use-chip .ci { width: 30px; height: 30px; border-radius: 9px; background: var(--grad-teal); display: grid; place-items: center; flex: none; }
.use-chip .ci svg { width: 16px; height: 16px; color: #fff; }
.use-chip .ok { margin-left: auto; color: var(--teal-deep); font-size: 13px; font-weight: 800; display: flex; align-items: center; gap: 4px; }
.use-chip .ok svg { width: 14px; height: 14px; }

/* ---------- 分区 ---------- */
section { padding: 92px 0; position: relative; }
.section-head { max-width: 660px; margin: 0 auto 50px; text-align: center; }
.section-head h2 { font-size: clamp(28px, 3.6vw, 40px); margin: 14px 0 12px; font-weight: 800; letter-spacing: -.6px; }
.section-head p { color: var(--ink-soft); font-size: 17px; margin: 0; }
.section-head .kicker { justify-content: center; }

/* ---------- 通用卡 亮点带 ---------- */
.universal { background: transparent; }
.universal .u-wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.universal .badge-pill { display: inline-flex; align-items: center; gap: 7px; margin-bottom: 12px; background: #fff; color: var(--teal-deep); font-weight: 800; font-size: 13px; padding: 7px 14px; border-radius: 999px; box-shadow: var(--shadow-soft); }
.universal .u-copy h2 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; margin: 16px 0 14px; letter-spacing: -.6px; line-height: 1.18; }
.universal .u-copy p { font-size: 17px; color: var(--ink-soft); margin: 0 0 22px; }
.u-points { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.u-points li { text-align: center; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 20px; box-shadow: var(--shadow-soft); }
.u-points .tk { width: 42px; height: 42px; border-radius: 12px; background: var(--grad-teal); color: #fff; display: grid; place-items: center; margin: 0 auto 14px; }
.u-points .tk svg { width: 20px; height: 20px; }
.u-points b { display: block; font-size: 16px; margin-bottom: 5px; }
.u-points .d { color: var(--muted); font-size: 13.5px; line-height: 1.6; }
.u-diagram { background: #fff; border-radius: var(--radius-lg); padding: 34px; box-shadow: var(--shadow-soft); }
.u-diagram .one-card { display: flex; align-items: center; gap: 14px; justify-content: center; margin-bottom: 22px; }
.u-diagram .one-card .mini-card { width: 96px; height: 60px; border-radius: 12px; background: var(--grad-teal); box-shadow: 0 14px 24px -12px rgba(58,130,125,.5); display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 12px; text-align: center; line-height: 1.2; }
.u-diagram .one-card .lab { font-weight: 800; font-size: 15px; }
.u-stores { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.u-store { background: var(--bg); border: 1px solid var(--line); border-radius: 14px; padding: 14px 10px; text-align: center; }
.u-store .si { width: 38px; height: 38px; border-radius: 11px; margin: 0 auto 8px; display: grid; place-items: center; background: var(--grad-teal); }
.u-store .si svg { width: 20px; height: 20px; color: #fff; }
.u-store .sn { font-size: 13px; font-weight: 700; }
.u-store .su { font-size: 11px; color: var(--teal-deep); font-weight: 700; margin-top: 2px; }
.u-connect { text-align: center; color: var(--muted); font-size: 13px; margin: 14px 0; font-weight: 600; }

/* ---------- 功能网格 ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; text-align: center;
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); }
.card .ico { width: 52px; height: 52px; border-radius: 15px; margin: 0 auto 16px; display: grid; place-items: center; background: var(--grad-teal); box-shadow: 0 12px 22px -12px rgba(58,130,125,.5); }
.card .ico.t { background: var(--teal-deep); }
.card .ico svg { width: 25px; height: 25px; color: #fff; }
.card h3 { margin: 0 0 8px; font-size: 19px; font-weight: 800; }
.card p { margin: 0; color: var(--ink-soft); font-size: 15px; }

/* ---------- 商户区 ---------- */
.merchant { background: transparent; }
.merchant .split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.merchant .copy h2 { font-size: clamp(26px, 3.2vw, 36px); font-weight: 800; margin: 16px 0 16px; letter-spacing: -.6px; }
.merchant .copy p.lead { color: var(--ink-soft); font-size: 17px; margin: 0 0 26px; }
.feature-list { list-style: none; padding: 0; margin: 0 0 30px; display: grid; gap: 15px; }
.feature-list li { display: flex; gap: 13px; align-items: flex-start; }
.feature-list .tick { flex: none; width: 26px; height: 26px; border-radius: 8px; background: var(--grad-teal); color: #fff; display: grid; place-items: center; box-shadow: 0 8px 16px -8px rgba(58,130,125,.5); }
.feature-list .tick svg { width: 15px; height: 15px; }
.feature-list b { display: block; font-size: 15.5px; }
.feature-list span { color: var(--muted); font-size: 14px; }
.merchant-contact { display: flex; gap: 18px; align-items: center; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow-soft); }
.mc-qr { width: 104px; height: 104px; flex: none; border-radius: 14px; background: var(--bg); border: 2px dashed var(--teal); display: grid; place-items: center; text-align: center; color: var(--teal-deep); font-size: 12px; font-weight: 700; line-height: 1.45; padding: 8px; overflow: hidden; }
.mc-qr img { width: 100%; height: 100%; object-fit: contain; border-radius: 10px; }
.mc-qr-note { font-weight: 400; font-size: 10px; opacity: .7; }
.mc-info b { font-size: 16px; display: block; margin-bottom: 4px; }
.mc-info p { margin: 0 0 12px; color: var(--ink-soft); font-size: 14px; }
.mc-info .btn { padding: 11px 20px; font-size: 14px; }
@media (max-width: 920px){ .merchant-contact { flex-direction: column; text-align: center; } }
.b-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px; box-shadow: var(--shadow-soft); }
.b-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.b-stat { background: var(--bg); border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.b-stat .ic { width: 40px; height: 40px; border-radius: 12px; background: var(--teal-tint); display: grid; place-items: center; margin-bottom: 12px; }
.b-stat .ic svg { width: 20px; height: 20px; color: var(--teal-deep); }
.b-stat .t { font-weight: 800; font-size: 16px; }
.b-stat .d { color: var(--muted); font-size: 13px; margin-top: 2px; }

/* ---------- 三步流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step { position: relative; padding: 30px 26px; border-radius: var(--radius); background: var(--paper); border: 1px solid var(--line); }
.step .n { width: 40px; height: 40px; border-radius: 12px; background: var(--teal-tint); color: var(--teal-deep); font-weight: 800; font-size: 15px; display: grid; place-items: center; margin-bottom: 14px; }
.step h3 { margin: 0 0 8px; font-size: 19px; font-weight: 800; }
.step p { margin: 0; color: var(--ink-soft); font-size: 15px; }
.step .arrow { position: absolute; top: 44px; right: -14px; color: var(--teal); z-index: 2; }
.step:last-child .arrow { display: none; }

/* ---------- 体验 / 入驻 CTA ---------- */
.experience { text-align: center; }
.cta-panel {
  max-width: 940px; margin: 0 auto; display: grid; grid-template-columns: auto 1fr; gap: 44px; align-items: center;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 40px 44px; box-shadow: var(--shadow-soft); text-align: left;
}
.qr { width: 178px; height: 178px; border-radius: 18px; background: var(--bg); padding: 12px; display: grid; place-items: center; border: 1px solid var(--line); }
.qr .ph { width: 100%; height: 100%; border-radius: 12px; border: 2px dashed var(--teal); display: grid; place-items: center; text-align: center; color: var(--teal-deep); font-size: 13px; font-weight: 700; padding: 12px; line-height: 1.5; }
.qr img { width: 100%; height: 100%; object-fit: contain; border-radius: 10px; }
.cta-copy h2 { font-size: 27px; font-weight: 800; margin: 0 0 10px; letter-spacing: -.5px; }
.cta-copy p { color: var(--ink-soft); margin: 0 0 20px; font-size: 16px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.platform-pills { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 28px; }
.pill { display: inline-flex; align-items: center; gap: 9px; padding: 9px 16px; border-radius: 999px; background: var(--paper); border: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--ink-soft); }
.pill .badge { font-size: 11px; padding: 2px 9px; border-radius: 999px; }
.pill.on { color: var(--teal-deep); }
.pill.on .badge { background: var(--teal-tint); color: var(--teal-deep); }
.pill .badge.soon { background: var(--bg-2); color: var(--muted); }

/* ---------- 页脚 ---------- */
footer { background: #20302D; color: rgba(255,255,255,.66); padding: 36px 0 20px; }
footer .brand { color: #fff; }
footer .ft-top { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.12); }
footer .ft-desc { max-width: 340px; font-size: 14px; margin-top: 12px; color: rgba(255,255,255,.55); }
footer .ft-cols { display: flex; gap: 70px; flex-wrap: wrap; }
footer .ft-col h4 { color: #fff; font-size: 14px; line-height: 1.3; margin: 0 0 8px; font-weight: 700; }
footer .ft-col a, footer .ft-col span { display: block; font-size: 14px; line-height: 1.5; margin-bottom: 9px; color: rgba(255,255,255,.55); transition: color .2s; }
footer .ft-col a:hover { color: var(--teal-light); }
footer .ft-bottom { padding-top: 14px; font-size: 13px; color: rgba(255,255,255,.45); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer .ft-bottom a { color: rgba(255,255,255,.45); }
footer .ft-bottom a:hover { color: var(--teal-light); }

/* ---------- 内容 / 法务页 ---------- */
.page-hero { position: relative; padding: 70px 0 48px; overflow: hidden; background: linear-gradient(180deg, var(--teal-tint), var(--bg)); border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(30px, 4.4vw, 44px); margin: 0 0 10px; font-weight: 800; letter-spacing: -.6px; }
.page-hero .sub { font-size: 16px; color: var(--ink-soft); margin: 0; }
.back-link { display: inline-flex; align-items: center; gap: 7px; color: var(--teal-deep); font-size: 14px; margin-bottom: 22px; font-weight: 700; }
.back-link:hover { color: var(--teal-darker); }
.content { padding: 56px 0 84px; }
.prose { max-width: 840px; margin: 0 auto; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 44px 48px; }
.prose h2 { font-size: 21px; margin: 34px 0 14px; padding-top: 26px; border-top: 1px solid var(--line); font-weight: 800; color: var(--teal-deep); }
.prose h2:first-of-type { border-top: none; padding-top: 0; margin-top: 0; }
.prose p { margin: 11px 0; font-size: 15px; color: var(--ink-soft); }
.prose .meta { color: var(--muted); font-size: 14px; }
.prose strong { color: var(--ink); }
.prose a { color: var(--teal-deep); text-decoration: underline; text-underline-offset: 3px; }

/* 支持页 */
.support-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 900px; margin: 0 auto 44px; }
.contact-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; gap: 16px; align-items: flex-start; }
.contact-card .ico { flex: none; width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center; background: var(--grad-teal); }
.contact-card .ico.t { background: var(--teal-deep); }
.contact-card .ico svg { width: 23px; height: 23px; color: #fff; }
.contact-card h3 { margin: 0 0 5px; font-size: 17px; }
.contact-card p { margin: 0 0 6px; color: var(--muted); font-size: 14px; }
.contact-card a.value { color: var(--teal-deep); font-weight: 800; font-size: 16px; }
.contact-card .value-static { color: var(--ink); font-weight: 700; font-size: 15px; }
.faq { max-width: 900px; margin: 0 auto; }
.faq details { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 2px 24px; margin-bottom: 12px; }
.faq summary { cursor: pointer; padding: 18px 0; font-weight: 700; font-size: 16px; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--teal-deep); font-size: 22px; font-weight: 300; flex: none; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 20px; color: var(--ink-soft); font-size: 15px; }

/* ---------- 响应式 ---------- */
@media (max-width: 920px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { order: -1; }
  .universal .u-wrap { grid-template-columns: 1fr; gap: 36px; }
  .merchant .split { grid-template-columns: 1fr; gap: 36px; }
  .steps { grid-template-columns: 1fr; }
  .step .arrow { display: none; }
  .cta-panel { grid-template-columns: 1fr; text-align: center; justify-items: center; gap: 28px; }
  .cta-actions { justify-content: center; }
  .support-grid { grid-template-columns: 1fr; }
  .nav-links a:not(.nav-cta) { display: none; }
  section { padding: 64px 0; }
  .prose { padding: 30px 24px; }
}

/* ---------- 手机端紧凑化 (≤560px) ---------- */
@media (max-width: 560px) {
  section { padding: 36px 0; }
  .section-head { margin-bottom: 22px; }
  .section-head h2 { font-size: 24px; }
  .section-head p { font-size: 15px; }

  /* Hero 压缩 + 卡片宽度自适应（修复窄屏倾斜裁切） */
  .hero { padding: 28px 0 30px; }
  .hero h1 { margin: 14px 0 12px; }
  .hero p.lead { font-size: 16px; margin-bottom: 20px; }
  .hero-trust { margin-top: 18px; gap: 10px 18px; }
  .hero-visual { gap: 18px; }
  .ucard, .use-list { width: min(330px, 100%); }
  .ucard { transform: rotate(-3deg); padding: 20px 22px; }

  /* 功能卡：手机端 2 列、居中、紧凑 */
  .grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .card { padding: 18px 12px; }
  .card:hover { transform: none; }
  .card .ico { width: 44px; height: 44px; margin: 0 auto 12px; }
  .card h3 { font-size: 16px; }
  .card p { font-size: 13px; }
  .u-points { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .u-points li { padding: 20px 14px; }

  /* 通用卡亮点带 */
  .universal .u-copy h2 { font-size: 25px; }
  .u-diagram { padding: 24px; }
  .u-points { gap: 11px; }
  .u-points li { font-size: 14px; }

  /* 门店区 */
  .merchant .copy h2 { font-size: 24px; }
  .feature-list { gap: 11px; margin-bottom: 22px; }
  .b-card { padding: 20px; }
  .b-stat { padding: 16px; }
  .merchant-contact { padding: 14px; gap: 12px; flex-direction: row; text-align: left; }
  .mc-qr { width: 84px; height: 84px; }
  .mc-info b { font-size: 15px; }
  .mc-info p { margin-bottom: 10px; font-size: 13px; }

  /* 三步 */
  .steps { gap: 12px; }
  .step { padding: 22px 20px; }
  .step .n { width: 36px; height: 36px; margin-bottom: 10px; }

  /* 体验区 */
  .cta-panel { padding: 28px 24px; gap: 22px; }
  .qr { width: 150px; height: 150px; }
  .cta-copy h2 { font-size: 22px; }
  .cta-copy p { font-size: 15px; }
  .platform-pills { margin-top: 22px; }

  /* 页脚 */
  footer { padding: 44px 0 24px; }
  footer .ft-top { padding-bottom: 26px; gap: 26px; }
  footer .ft-cols { gap: 44px; }

  /* 手机端内容精简（桌面版完整保留） */
  #how { display: none; }
  #merchant .b-card { display: none; }
  #customers .grid .card:nth-child(5),
  #customers .grid .card:nth-child(6) { display: none; }
}

/* ---------- 墨流（Suminagashi）流体背景 ---------- */
#ink-canvas { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; display: block; background: var(--bg); }

/* ---------- 下载安卓版 App 按钮 ---------- */
.btn-apk { background: var(--teal-deep); color: #fff !important; box-shadow: var(--shadow-teal); }
.btn-apk:hover { transform: translateY(-2px); }
.btn-apk svg { width: 18px; height: 18px; }
.apk-note { font-size: 12px; color: var(--muted); margin: 10px 0 0; }