/* ============================================================
   西平街区 · PC 官网样式
   中国风宣纸质感 + 现代渐变/高光/阴影
   ============================================================ */
:root {
  --paper: #f5f0e6;
  --paper2: #efe6d6;
  --paper3: #e6dac3;
  --ink: #0b1220;
  --ink2: #2a3344;
  --muted: #6b7280;
  --seal: #b42318;
  --seal2: #d6452f;
  --rail: #0e7490;
  --rail2: #15a0bf;
  --gold: #b57b15;
  --gold2: #e0a93a;
  --line: rgba(15, 23, 42, 0.12);
  --card: rgba(255, 255, 255, 0.72);
  --shadow-sm: 0 2px 8px rgba(11, 18, 32, 0.06);
  --shadow-md: 0 10px 30px rgba(11, 18, 32, 0.1);
  --shadow-lg: 0 24px 60px rgba(11, 18, 32, 0.16);
  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 26px;
  --maxw: 1180px;
  --font-serif: "Noto Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  line-height: 1.65;
  background:
    radial-gradient(1100px 640px at -8% -10%, rgba(180, 35, 24, 0.12), transparent 60%),
    radial-gradient(1000px 640px at 110% 0%, rgba(14, 116, 144, 0.12), transparent 62%),
    radial-gradient(1000px 760px at 30% 120%, rgba(181, 123, 21, 0.14), transparent 58%),
    linear-gradient(180deg, var(--paper), var(--paper2));
  background-attachment: fixed;
  overflow-x: hidden;
}

/* 宣纸纹理叠层 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(0, 0, 0, 0.018) 0 1px, transparent 1px 6px),
    repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.014) 0 1px, transparent 1px 5px);
  mix-blend-mode: multiply;
  opacity: 0.4;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

.serif { font-family: var(--font-serif); }

/* 区块通用 */
section { position: relative; z-index: 1; padding: 96px 0; }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.sec-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; letter-spacing: 2px; font-weight: 700;
  color: var(--seal); padding: 6px 16px; border-radius: 999px;
  background: rgba(180, 35, 24, 0.08);
  border: 1px solid rgba(180, 35, 24, 0.16);
  margin-bottom: 18px;
}
.sec-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 900; line-height: 1.2; letter-spacing: 1px;
}
.sec-sub { margin-top: 16px; color: var(--ink2); font-size: 17px; }
.text-grad {
  background: linear-gradient(120deg, var(--seal), var(--gold) 70%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ============================================================
   导航栏
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: all .35s ease;
  padding: 16px 0;
}
.nav.scrolled {
  background: rgba(245, 240, 230, 0.82);
  backdrop-filter: saturate(160%) blur(16px);
  box-shadow: 0 1px 0 var(--line), 0 8px 24px rgba(11,18,32,0.06);
  padding: 10px 0;
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .seal {
  width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center;
  object-fit: contain;
  position: relative;
}
.brand img.seal { display: block; }
.brand b { font-family: var(--font-serif); font-size: 21px; font-weight: 900; letter-spacing: 1px; }
.brand small { display: block; font-size: 11px; color: var(--muted); letter-spacing: 3px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  font-size: 15px; font-weight: 600; color: var(--ink2);
  padding: 8px 16px; border-radius: 10px; transition: all .2s;
}
.nav-links a:hover { color: var(--seal); background: rgba(180,35,24,0.07); }
.nav-cta { margin-left: 12px; }

/* 移动端汉堡菜单 */
.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line);
  border-radius: 12px; background: rgba(255,255,255,0.7); color: var(--ink);
  font-size: 20px; cursor: pointer; place-items: center; transition: all .25s;
}
.nav-toggle:hover { background: #fff; color: var(--seal); }
.mobile-menu {
  display: none; flex-direction: column; gap: 4px; padding: 12px 24px 18px;
}
.mobile-menu a {
  font-size: 16px; font-weight: 600; color: var(--ink2);
  padding: 12px 14px; border-radius: 10px; transition: all .2s;
}
.mobile-menu a:hover { color: var(--seal); background: rgba(180,35,24,0.07); }
.mobile-menu .btn { justify-content: center; margin-top: 8px; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-sans); font-weight: 700; font-size: 15px;
  padding: 13px 26px; border-radius: 999px; cursor: pointer;
  border: none; transition: all .25s ease; white-space: nowrap;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--seal2), var(--seal));
  box-shadow: 0 10px 26px rgba(180,35,24,0.36), inset 0 1px 0 rgba(255,255,255,0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(180,35,24,0.46); }
.btn-ghost {
  color: var(--ink); background: rgba(255,255,255,0.6);
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.btn-ghost:hover { background: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-lg { padding: 16px 34px; font-size: 16px; }

/* ============================================================
   Hero
   ============================================================ */
.hero { padding: 168px 0 90px; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 8px 18px; border-radius: 999px; font-size: 13.5px; font-weight: 700;
  color: var(--rail); background: rgba(14,116,144,0.09);
  border: 1px solid rgba(14,116,144,0.2); margin-bottom: 26px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--rail2); box-shadow: 0 0 0 4px rgba(21,160,191,0.2); animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: .4; } }
.hero h1 {
  font-family: var(--font-serif); font-weight: 900;
  font-size: clamp(38px, 5.4vw, 68px); line-height: 1.08; letter-spacing: 1px;
}
.hero h1 .line2 { display: block; }
.hero p.lead { margin-top: 24px; font-size: 19px; color: var(--ink2); max-width: 520px; }
.hero-actions { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }
.hero-meta { margin-top: 40px; display: flex; gap: 32px; }
.hero-meta .m b { font-family: var(--font-serif); font-size: 30px; font-weight: 900; display: block; color: var(--seal); }
.hero-meta .m span { font-size: 13px; color: var(--muted); font-weight: 600; }

/* 手机模型 */
.phone-stage { position: relative; display: grid; place-items: center; }
.phone-stage .glow {
  position: absolute; width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(180,35,24,0.22), transparent 65%);
  filter: blur(10px); z-index: 0;
}
.phone {
  position: relative; z-index: 2; width: 290px; height: 600px;
  border-radius: 44px; padding: 12px;
  background: linear-gradient(155deg, #1b2433, #0b1220);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,0.12);
  animation: float 6s ease-in-out infinite;
}
@keyframes float { 50% { transform: translateY(-16px); } }
.phone::before {
  content: ""; position: absolute; top: 18px; left: 50%; transform: translateX(-50%);
  width: 120px; height: 26px; background: #0b1220; border-radius: 0 0 16px 16px; z-index: 5;
}
.phone-screen {
  width: 100%; height: 100%; border-radius: 34px; overflow: hidden;
  background: linear-gradient(180deg, var(--paper), var(--paper2));
  position: relative;
}
.phone-screen .scr-top {
  padding: 40px 18px 14px; color: #fff;
  background: linear-gradient(135deg, var(--seal2), var(--seal));
}
.phone-screen .scr-top .city { font-family: var(--font-serif); font-size: 19px; font-weight: 900; }
.phone-screen .scr-top .sub { font-size: 11px; opacity: .85; }
.phone-screen .scr-top .wallet { margin-top: 14px; display: flex; gap: 14px; }
.phone-screen .scr-top .wallet .w b { font-size: 17px; display: block; }
.phone-screen .scr-top .wallet .w span { font-size: 10px; opacity: .8; }
.scr-grid { padding: 14px; display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.scr-grid .g {
  background: #fff; border-radius: 14px; padding: 12px 6px; text-align: center;
  box-shadow: var(--shadow-sm); border: 1px solid var(--line);
}
.scr-grid .g i { font-size: 19px; margin-bottom: 5px; }
.scr-grid .g span { font-size: 10.5px; font-weight: 600; display: block; color: var(--ink2); }

/* 浮动小卡片 */
.float-card {
  position: absolute; z-index: 3; background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px); border-radius: 16px; padding: 12px 16px;
  box-shadow: var(--shadow-md); border: 1px solid rgba(255,255,255,0.8);
  display: flex; align-items: center; gap: 11px; font-size: 13px; font-weight: 600;
}
.float-card i { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; color: #fff; font-size: 15px; }
.float-card small { display: block; font-size: 11px; color: var(--muted); font-weight: 500; }
.fc-1 { top: 80px; left: -36px; animation: float 5s ease-in-out infinite; }
.fc-2 { bottom: 130px; right: -50px; animation: float 5.5s ease-in-out infinite .6s; }
.fc-3 { bottom: 36px; left: -24px; animation: float 6.2s ease-in-out infinite .3s; }

/* ============================================================
   数据统计条
   ============================================================ */
.stats { padding: 0 0 40px; }
.stats .wrap {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border-radius: var(--r-lg); overflow: hidden;
  box-shadow: var(--shadow-md); border: 1px solid var(--line);
}
.stat {
  background: var(--card); backdrop-filter: blur(8px);
  padding: 34px 24px; text-align: center;
}
.stat .num { font-family: var(--font-serif); font-size: 44px; font-weight: 900; line-height: 1; }
.stat .num .unit { font-size: 20px; margin-left: 2px; }
.stat .label { margin-top: 10px; font-size: 14px; color: var(--ink2); font-weight: 600; }
.stat i { color: var(--gold); font-size: 18px; margin-bottom: 10px; display: block; }

/* ============================================================
   功能模块卡片网格
   ============================================================ */
.feat-cats { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 44px; }
.feat-cats .chip {
  padding: 9px 22px; border-radius: 999px; font-size: 14.5px; font-weight: 700;
  cursor: pointer; transition: all .25s; color: var(--ink2);
  background: rgba(255,255,255,0.6); border: 1px solid var(--line);
}
.feat-cats .chip:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.feat-cats .chip.active { color: #fff; background: linear-gradient(135deg, var(--seal2), var(--seal)); border-color: transparent; box-shadow: 0 8px 20px rgba(180,35,24,0.32); }

.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feat {
  position: relative; background: var(--card); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.6); border-radius: var(--r-md);
  padding: 30px 26px; overflow: hidden; transition: all .35s ease;
  box-shadow: var(--shadow-sm); cursor: default;
}
.feat::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; opacity: 0;
  background: radial-gradient(420px 200px at 20% 0%, var(--g1, rgba(180,35,24,0.1)), transparent 60%);
  transition: opacity .35s;
}
.feat:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(255,255,255,0.9); }
.feat:hover::before { opacity: 1; }
.feat:hover .feat-ico { transform: rotate(-6deg) scale(1.08); }
.feat-ico {
  width: 60px; height: 60px; border-radius: 16px; display: grid; place-items: center;
  font-size: 26px; color: #fff; margin-bottom: 20px; transition: transform .35s ease;
  box-shadow: 0 10px 24px var(--g1, rgba(180,35,24,0.3)), inset 0 1px 0 rgba(255,255,255,0.3);
}
.feat h3 { font-family: var(--font-serif); font-size: 21px; font-weight: 800; position: relative; }
.feat p { margin-top: 10px; font-size: 14.5px; color: var(--ink2); position: relative; }
.feat .tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 7px; position: relative; }
.feat .tags span {
  font-size: 12px; font-weight: 600; padding: 4px 11px; border-radius: 999px;
  background: rgba(11,18,32,0.05); color: var(--ink2);
}
.feat[hidden] { display: none; }

/* ============================================================
   交替展示区（图文）
   ============================================================ */
.showcase { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; margin-bottom: 110px; }
.showcase:last-child { margin-bottom: 0; }
.showcase.rev .sc-text { order: 2; }
.sc-img { position: relative; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-lg); aspect-ratio: 4/3; }
.sc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.showcase:hover .sc-img img { transform: scale(1.06); }
.sc-img .ov { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(11,18,32,0.5)); }
.sc-img .badge-pin {
  position: absolute; top: 18px; left: 18px; padding: 8px 16px; border-radius: 999px;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(6px); font-weight: 700; font-size: 13px;
  box-shadow: var(--shadow-sm); display: flex; align-items: center; gap: 8px;
}
.sc-text .num-tag { font-family: var(--font-serif); font-size: 15px; font-weight: 800; color: var(--gold); letter-spacing: 2px; }
.sc-text h3 { font-family: var(--font-serif); font-size: clamp(26px,3vw,36px); font-weight: 900; margin: 8px 0 16px; line-height: 1.22; }
.sc-text p { font-size: 16.5px; color: var(--ink2); }
.sc-list { margin-top: 22px; display: grid; gap: 14px; }
.sc-list li { display: flex; gap: 13px; align-items: flex-start; font-size: 15px; }
.sc-list .ic { flex-shrink: 0; width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; color: #fff; font-size: 13px; background: linear-gradient(135deg, var(--rail2), var(--rail)); }
.sc-list b { font-weight: 700; }

/* ============================================================
   区域地图
   ============================================================ */
.areas { background: linear-gradient(180deg, transparent, rgba(14,116,144,0.04) 30%, transparent); }
.area-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); gap: 14px; }
.area {
  position: relative; border-radius: var(--r-md); padding: 20px 18px; overflow: hidden;
  color: #fff; min-height: 116px; display: flex; flex-direction: column; justify-content: space-between;
  box-shadow: var(--shadow-sm); transition: all .3s; cursor: default;
  background-size: cover; background-position: center;
}
.area::before { content: ""; position: absolute; inset: 0; background: linear-gradient(155deg, rgba(11,18,32,0.32), rgba(11,18,32,0.74)); transition: opacity .3s; }
.area:hover { transform: translateY(-5px) scale(1.02); box-shadow: var(--shadow-lg); }
.area:hover::before { opacity: .82; }
.area > * { position: relative; z-index: 1; }
.area .kind { font-size: 11px; font-weight: 700; letter-spacing: 1px; opacity: .9; display: flex; align-items: center; gap: 6px; }
.area .nm { font-family: var(--font-serif); font-size: 20px; font-weight: 900; }
.area .code { font-size: 11px; opacity: .7; font-family: monospace; }

/* ============================================================
   勋章墙
   ============================================================ */
.badges-wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px,1fr)); gap: 22px; max-width: 940px; margin: 0 auto; }
.badge {
  text-align: center; transition: transform .3s;
}
.badge:hover { transform: translateY(-6px); }
.badge .medal {
  width: 96px; height: 96px; border-radius: 50%; margin: 0 auto 14px; position: relative;
  display: grid; place-items: center; font-size: 36px; color: rgba(255,255,255,0.95);
  box-shadow: 0 14px 30px var(--glow, rgba(0,0,0,0.2)), inset 0 2px 4px rgba(255,255,255,0.5), inset 0 -3px 8px rgba(0,0,0,0.25);
}
.badge .medal::after {
  content: ""; position: absolute; top: 10%; left: 18%; width: 44%; height: 30%; border-radius: 50%;
  background: radial-gradient(circle, var(--sheen, rgba(255,255,255,0.9)), transparent 70%); opacity: .8;
}
.badge .medal::before {
  content: ""; position: absolute; inset: -7px; border-radius: 50%; border: 2px solid var(--ring,#d4af37); opacity: .55;
}
.badge .bname { font-family: var(--font-serif); font-weight: 800; font-size: 16px; }
.badge .btier { font-size: 12px; color: var(--muted); font-weight: 600; margin-top: 2px; }

/* ============================================================
   注册流程
   ============================================================ */
.flow { background: linear-gradient(180deg, transparent, rgba(180,35,24,0.04)); }
.flow-steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; counter-reset: step; }
.step {
  position: relative; background: var(--card); backdrop-filter: blur(8px); padding: 30px 24px;
  border-radius: var(--r-md); border: 1px solid rgba(255,255,255,0.6); box-shadow: var(--shadow-sm);
  transition: all .3s;
}
.step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.step .n {
  font-family: var(--font-serif); font-size: 50px; font-weight: 900; line-height: 1;
  background: linear-gradient(135deg, var(--seal), var(--gold)); -webkit-background-clip: text; background-clip: text; color: transparent;
  opacity: .9;
}
.step h4 { font-family: var(--font-serif); font-size: 19px; font-weight: 800; margin: 10px 0 8px; }
.step p { font-size: 14px; color: var(--ink2); }
.step .ic { position: absolute; top: 26px; right: 24px; font-size: 24px; color: var(--rail); opacity: .35; }

/* ============================================================
   站点入口矩阵
   ============================================================ */
.site-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.site-card {
  position: relative; background: var(--card); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.6); border-radius: var(--r-lg);
  padding: 30px 28px; text-align: center; overflow: hidden;
  box-shadow: var(--shadow-sm); transition: all .35s ease;
}
.site-card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; opacity: 0;
  background: radial-gradient(460px 220px at 50% 0%, var(--sg, rgba(180,35,24,0.12)), transparent 62%);
  transition: opacity .35s;
}
.site-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(255,255,255,0.9); }
.site-card:hover::before { opacity: 1; }
.site-card > * { position: relative; z-index: 1; }
.site-head { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 6px; }
.site-ico {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  font-size: 18px; color: #fff; box-shadow: 0 8px 18px var(--sg, rgba(180,35,24,0.3));
}
.site-card h3 { font-family: var(--font-serif); font-size: 20px; font-weight: 800; }
.site-card .site-desc { font-size: 14px; color: var(--ink2); margin-top: 4px; min-height: 40px; }
.site-qr {
  width: 168px; height: 168px; margin: 20px auto 16px; padding: 12px;
  background: #fff; border-radius: var(--r-md); border: 1px solid var(--line);
  box-shadow: var(--shadow-sm); display: grid; place-items: center;
}
.site-qr img, .site-qr canvas { width: 100% !important; height: 100% !important; display: block; }
.site-url {
  display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 700;
  color: var(--rail); word-break: break-all; margin-bottom: 16px;
}
.site-link {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; width: 100%;
  padding: 12px 20px; border-radius: 999px; font-weight: 700; font-size: 15px; color: #fff;
  background: linear-gradient(135deg, var(--sg2, var(--seal2)), var(--sg3, var(--seal)));
  box-shadow: 0 10px 24px var(--sg, rgba(180,35,24,0.3)); transition: all .25s ease;
}
.site-link:hover { transform: translateY(-2px); filter: brightness(1.06); }

/* CTA 真实二维码 */
.qr-cap { color: rgba(255,255,255,0.78); font-size: 13px; font-weight: 600; margin-top: 12px; }

/* ============================================================
   CTA + 页脚
   ============================================================ */
.cta-band { padding: 60px 0; }
.cta-box {
  position: relative; border-radius: var(--r-lg); padding: 64px 48px; text-align: center; overflow: hidden;
  background: linear-gradient(135deg, #14202f, #0b1220);
  box-shadow: var(--shadow-lg);
}
.cta-box::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 15% 0%, rgba(180,35,24,0.4), transparent 60%),
    radial-gradient(600px 300px at 100% 100%, rgba(14,116,144,0.4), transparent 60%);
}
.cta-box::after {
  content: "西"; position: absolute; right: -10px; bottom: -60px; font-family: var(--font-serif);
  font-size: 280px; font-weight: 900; color: rgba(255,255,255,0.04); line-height: 1;
}
.cta-box > * { position: relative; z-index: 1; }
.cta-box h2 { font-family: var(--font-serif); font-size: clamp(28px,4vw,46px); font-weight: 900; color: #fff; }
.cta-box p { color: rgba(255,255,255,0.78); font-size: 18px; margin: 16px 0 34px; }
.cta-box .actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.qr {
  width: 132px; height: 132px; border-radius: 16px; background: #fff; padding: 10px;
  display: grid; place-items: center; margin: 0 auto;
}
.qr i { font-size: 64px; color: var(--ink); }
.qr img, .qr canvas { width: 100% !important; height: 100% !important; display: block; }

.footer { padding: 64px 0 36px; border-top: 1px solid var(--line); margin-top: 40px; }
.footer .wrap { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr; gap: 40px; }
.footer .about p { color: var(--ink2); font-size: 14px; margin-top: 16px; max-width: 300px; }
.footer h5 { font-family: var(--font-serif); font-size: 16px; font-weight: 800; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { font-size: 14px; color: var(--ink2); transition: color .2s; }
.footer ul a:hover { color: var(--seal); }
.footer .socials { display: flex; gap: 12px; margin-top: 18px; }
.footer .socials a {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  background: rgba(255,255,255,0.7); border: 1px solid var(--line); color: var(--ink2); transition: all .25s;
}
.footer .socials a:hover { color: #fff; background: var(--seal); transform: translateY(-3px); }
.copyright { text-align: center; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }

/* ============================================================
   滚动入场动画
   ============================================================ */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }

/* 返回顶部 */
.totop {
  position: fixed; right: 28px; bottom: 28px; z-index: 90; width: 48px; height: 48px;
  border-radius: 14px; display: grid; place-items: center; cursor: pointer; border: none;
  color: #fff; background: linear-gradient(135deg, var(--seal2), var(--seal));
  box-shadow: var(--shadow-md); opacity: 0; transform: translateY(20px); pointer-events: none; transition: all .3s;
}
.totop.show { opacity: 1; transform: none; pointer-events: auto; }
.totop:hover { transform: translateY(-3px); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .phone-stage { order: -1; }
  .stats .wrap { grid-template-columns: repeat(2,1fr); }
  .feat-grid { grid-template-columns: repeat(2,1fr); }
  .showcase, .showcase.rev { grid-template-columns: 1fr; gap: 28px; }
  .showcase.rev .sc-text { order: 0; }
  .flow-steps { grid-template-columns: repeat(2,1fr); }
  .site-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .footer .wrap { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: grid; }
  .nav.menu-open {
    background: rgba(245, 240, 230, 0.96);
    backdrop-filter: saturate(160%) blur(16px);
    box-shadow: 0 1px 0 var(--line), 0 12px 30px rgba(11,18,32,0.1);
  }
  .nav.menu-open .mobile-menu { display: flex; }
}
@media (max-width: 560px) {
  section { padding: 64px 0; }
  .feat-grid { grid-template-columns: 1fr; }
  .stats .wrap { grid-template-columns: 1fr 1fr; }
  .flow-steps { grid-template-columns: 1fr; }
  .footer .wrap { grid-template-columns: 1fr; }
  .hero { padding: 130px 0 60px; }
  .site-card { padding: 26px 20px; }
  .site-qr { width: 150px; height: 150px; }
}