/* ==========================================================================
   意中婚恋 · 官方主网站  site.css
   版本：V1.0  2026-10-06
   色系与 APP H5 对齐：姻缘朱 #ff4757 / 深朱 #e8294c / 喜金 #e8903a
   移动优先 · 无第三方依赖 · 微信内置浏览器优先
   ========================================================================== */

:root{
  --brand:#ff4757;
  --brand-deep:#e8294c;
  --brand-soft:#fff0f2;
  --brand-line:#ffd7dd;
  --gold:#e8903a;
  --gold-soft:#fff8f0;
  --gold-line:#f7ddbe;
  --ink:#23272e;
  --ink-2:#5b6169;
  --ink-3:#8b9098;
  --line:#ececf1;
  --bg:#ffffff;
  --bg-2:#faf8f7;
  --radius:14px;
  --radius-s:10px;
  --shadow:0 2px 8px rgba(35,39,46,.05),0 12px 32px rgba(35,39,46,.06);
  --shadow-hi:0 6px 16px rgba(232,41,76,.14),0 18px 44px rgba(232,41,76,.12);
  --wrap:1160px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
button{font-family:inherit}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- 顶部导航 ---------- */
.topbar{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar-in{display:flex;align-items:center;justify-content:space-between;height:64px;gap:14px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:clamp(32px,3.6vw,40px);height:clamp(26px,2.9vw,32px);flex:0 0 auto;
  object-fit:contain;display:block;
}
.brand-txt{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-txt b{font-size:clamp(14px,1.7vw,16px);letter-spacing:.02em;white-space:nowrap}
.brand-txt span{font-size:clamp(9.5px,1.1vw,11px);color:var(--ink-3);letter-spacing:.14em;white-space:nowrap}

.nav{display:none}
@media (min-width:900px){
  .nav{display:flex;align-items:center;gap:2px}
  .nav a{
    padding:8px 13px;border-radius:8px;font-size:14.5px;color:var(--ink-2);
    transition:color .18s,background .18s;white-space:nowrap;
  }
  .nav a:hover{color:var(--brand-deep);background:var(--brand-soft)}
  .nav a.on{color:var(--brand-deep);font-weight:600;background:var(--brand-soft)}
}

.topbar-act{display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:44px;padding:0 20px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:transform .16s,box-shadow .2s,background .2s;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);color:#fff;box-shadow:0 4px 14px rgba(232,41,76,.26)}
.btn-primary:hover{box-shadow:var(--shadow-hi)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand-line);color:var(--brand-deep)}
.btn-gold{background:linear-gradient(135deg,#f3a352 0%,var(--gold) 100%);color:#fff;box-shadow:0 4px 14px rgba(232,144,58,.26)}
.btn-block{width:100%}
.btn-s{height:38px;padding:0 16px;font-size:14px;border-radius:9px}

.burger{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;border:1px solid var(--line);border-radius:10px;
  background:#fff;cursor:pointer;
}
.burger i{display:block;height:2px;background:var(--ink);border-radius:2px}
@media (min-width:900px){.burger{display:none}}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(23,26,31,.42);
  opacity:0;visibility:hidden;transition:opacity .22s,visibility .22s;
}
.drawer.open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;width:82%;max-width:330px;height:100%;
  background:#fff;padding:18px;overflow-y:auto;transform:translateX(100%);
  transition:transform .26s cubic-bezier(.4,0,.2,1);
}
.drawer.open .drawer-panel{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:20px;line-height:1;color:var(--ink-2);cursor:pointer}
.drawer nav a{display:block;padding:13px 12px;border-radius:10px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer nav a:last-child{border-bottom:0}
.drawer nav a.on{color:var(--brand-deep);font-weight:600;background:var(--brand-soft)}
.drawer-foot{margin-top:16px;display:grid;gap:10px}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1100px 460px at 88% -10%,#ffe9ec 0%,rgba(255,233,236,0) 62%),
    radial-gradient(760px 400px at 4% 8%,#fff4e8 0%,rgba(255,244,232,0) 60%),
    #fff;
  padding:44px 0 40px;
}
.hero-in{display:grid;gap:32px}
@media (min-width:960px){
  .hero{padding:72px 0 64px}
  .hero-in{grid-template-columns:1.06fr .94fr;align-items:center;gap:52px}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 13px;
  border-radius:999px;background:#fff;border:1px solid var(--brand-line);
  color:var(--brand-deep);font-size:13px;font-weight:600;margin-bottom:18px;
  box-shadow:0 2px 10px rgba(232,41,76,.07);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block}
.hero h1{font-size:33px;line-height:1.24;letter-spacing:-.02em}
@media (min-width:700px){.hero h1{font-size:44px}}
@media (min-width:960px){.hero h1{font-size:50px}}
.hero h1 em{font-style:normal;color:var(--brand-deep);position:relative;white-space:nowrap}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:8px;
  background:linear-gradient(90deg,rgba(232,144,58,.34),rgba(255,71,87,.26));
  border-radius:4px;z-index:-1;
}
.hero-sub{margin-top:16px;font-size:16.5px;color:var(--ink-2);max-width:34em}
.hero-say{
  margin-top:20px;padding:14px 18px;border-left:3px solid var(--brand);
  background:linear-gradient(90deg,var(--brand-soft),rgba(255,240,242,0));
  border-radius:0 var(--radius-s) var(--radius-s) 0;
  font-size:16px;color:var(--ink);font-weight:500;
}
.hero-acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-meta{margin-top:18px;font-size:13px;color:var(--ink-3)}

/* 首屏右侧：手机壳预览 */
.visual{position:relative;display:flex;justify-content:center}
.phone{
  width:270px;border-radius:32px;background:#fff;border:1px solid var(--line);
  box-shadow:0 20px 56px rgba(35,39,46,.13);padding:12px;position:relative;z-index:2;
}
.phone-scr{
  border-radius:22px;background:linear-gradient(170deg,#fff0f2 0%,#fff8f0 55%,#fff 100%);
  height:430px;padding:16px;display:flex;flex-direction:column;gap:12px;overflow:hidden;
}
.ph-bar{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--ink-3)}
.ph-title{font-size:15px;font-weight:700}
.ph-card{
  background:#fff;border-radius:14px;padding:12px;
  box-shadow:0 2px 10px rgba(35,39,46,.07);display:flex;gap:11px;align-items:center;
}
.ph-av{width:44px;height:44px;border-radius:12px;flex:0 0 44px;background:linear-gradient(135deg,#ffd7dd,#ffe3b8)}
.ph-lines{flex:1;min-width:0}
.ph-lines b{display:block;font-size:13px}
.ph-lines span{font-size:11.5px;color:var(--ink-3)}
.ph-tag{font-size:10.5px;color:var(--brand-deep);background:var(--brand-soft);border-radius:6px;padding:2px 7px}
.ph-btn{
  margin-top:auto;background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;
  border-radius:11px;text-align:center;font-size:13px;font-weight:600;padding:11px;box-shadow:0 6px 16px rgba(232,41,76,.25);
}
.blob{
  position:absolute;border-radius:50%;filter:blur(6px);opacity:.6;z-index:1;
}
.blob-a{width:150px;height:150px;background:radial-gradient(circle,#ffd7dd,transparent 68%);top:6%;right:2%}
.blob-b{width:190px;height:190px;background:radial-gradient(circle,#ffe3b8,transparent 68%);bottom:2%;left:0}

/* ---------- 通用区块 ---------- */
.sec{padding:52px 0}
.sec.alt{background:var(--bg-2)}
@media (min-width:900px){.sec{padding:76px 0}}
.sec-head{max-width:44em;margin-bottom:30px}
.sec-tag{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:var(--gold);margin-bottom:10px;
}
.sec-head h2{font-size:25px}
@media (min-width:700px){.sec-head h2{font-size:33px}}
.sec-head p{margin-top:12px;color:var(--ink-2);font-size:16px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* 信任状 */
.trust{display:grid;gap:14px}
@media (min-width:820px){.trust{grid-template-columns:repeat(3,1fr);gap:20px}}
.trust-i{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.trust-i:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.ic{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);margin-bottom:14px;
}
.ic.gold{background:var(--gold-soft);color:var(--gold)}
.ic svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.trust-i h3{font-size:17px;margin-bottom:7px}
.trust-i p{font-size:14.5px;color:var(--ink-2)}

/* 数据带 */
.stats{
  background:linear-gradient(120deg,#2a2f37 0%,#3a2a2e 100%);
  color:#fff;border-radius:var(--radius);padding:26px 20px;
  display:grid;gap:20px;grid-template-columns:repeat(2,1fr);
}
@media (min-width:820px){.stats{grid-template-columns:repeat(4,1fr);padding:34px 30px}}
.stat{text-align:center}
.stat b{display:block;font-size:28px;letter-spacing:-.02em;color:#fff}
@media (min-width:820px){.stat b{font-size:36px}}
.stat b small{font-size:15px;font-weight:500;margin-left:3px;color:rgba(255,255,255,.72)}
.stat span{display:block;font-size:13.5px;color:rgba(255,255,255,.66);margin-top:4px}
.stat .todo{color:#ffd08a;font-size:20px}

/* 卡片网格 */
.grid{display:grid;gap:16px}
@media (min-width:700px){.g2{grid-template-columns:repeat(2,1fr)}}
@media (min-width:960px){.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.card h3{font-size:17px;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--ink-2)}
.card .n{
  display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:9px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:14px;font-weight:700;margin-bottom:12px;
}

/* 步骤 */
.steps{display:grid;gap:14px;counter-reset:s}
@media (min-width:820px){.steps{grid-template-columns:repeat(4,1fr);gap:18px}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  font-size:26px;font-weight:800;color:var(--brand-soft);letter-spacing:-.03em;
  position:absolute;top:14px;right:18px;line-height:1;
}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--ink-2)}

/* 表格 */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.tbl{min-width:640px}
.tbl th,.tbl td{padding:14px 16px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl thead th{background:var(--bg-2);font-size:13px;font-weight:700;color:var(--ink-2);letter-spacing:.03em;white-space:nowrap}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl td b{color:var(--brand-deep)}
.tbl .c{font-weight:700;color:var(--ink)}

/* 提示条 */
.note{
  border-radius:var(--radius-s);padding:14px 16px;font-size:14.5px;
  background:var(--gold-soft);border:1px solid var(--gold-line);color:#6b4a1c;
}
.note.plain{background:var(--bg-2);border-color:var(--line);color:var(--ink-2)}
.note b{color:#5a3c12}

/* CTA 区块 */
.cta{
  border-radius:18px;padding:32px 22px;text-align:center;color:#fff;
  background:linear-gradient(130deg,var(--brand) 0%,var(--brand-deep) 62%,#b81f3c 100%);
  box-shadow:0 16px 44px rgba(232,41,76,.22);
}
@media (min-width:820px){.cta{padding:52px 40px}}
.cta h2{font-size:24px;color:#fff}
@media (min-width:700px){.cta h2{font-size:32px}}
.cta p{margin-top:14px;color:rgba(255,255,255,.9);font-size:16px;max-width:38em;margin-left:auto;margin-right:auto}
.cta-acts{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px}
.cta .btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.42);color:#fff}
.cta .btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;color:#fff}
.cta .btn-white{background:#fff;color:var(--brand-deep)}

/* 内页头 */
.page-hero{
  padding:38px 0 34px;
  background:
    radial-gradient(900px 320px at 90% -30%,#ffe9ec 0%,rgba(255,233,236,0) 60%),
    radial-gradient(600px 300px at 0% 0%,#fff4e8 0%,rgba(255,244,232,0) 60%),
    #fff;
  border-bottom:1px solid var(--line);
}
@media (min-width:900px){.page-hero{padding:58px 0 50px}}
.crumb{font-size:13px;color:var(--ink-3);margin-bottom:12px}
.crumb a:hover{color:var(--brand-deep)}
.page-hero h1{font-size:28px}
@media (min-width:700px){.page-hero h1{font-size:38px}}
.page-hero .lead{margin-top:14px;font-size:16.5px;color:var(--ink-2);max-width:40em}

/* 图文两栏 */
.split{display:grid;gap:26px;align-items:center}
@media (min-width:900px){.split{grid-template-columns:1fr 1fr;gap:48px}}
.prose p{font-size:16px;color:var(--ink-2);margin-bottom:14px}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--ink)}
.quote{
  border-left:3px solid var(--gold);background:var(--gold-soft);
  padding:16px 18px;border-radius:0 var(--radius-s) var(--radius-s) 0;
  font-size:15.5px;color:#6b4a1c;margin:18px 0;
}
.figure{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(150deg,#fff0f2,#fff8f0 60%,#fff);min-height:260px;
  display:flex;align-items:center;justify-content:center;padding:20px;text-align:center;
}
.figure .ph-note{font-size:13px;color:var(--ink-3);line-height:1.9}
.figure .ph-note b{display:block;color:var(--ink-2);font-size:14.5px;margin-bottom:4px}

/* 清单 */
.checks{display:grid;gap:11px}
.checks li{display:flex;gap:11px;align-items:flex-start;font-size:15.5px;color:var(--ink-2)}
.checks li svg{width:19px;height:19px;flex:0 0 19px;margin-top:4px;stroke:var(--brand);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.checks li b{color:var(--ink)}

/* FAQ */
.faq{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{
  padding:17px 20px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:20px;color:var(--brand);font-weight:400;line-height:1;flex:0 0 auto}
.faq details[open] summary::after{content:"−"}
.faq .a{padding:0 20px 18px;font-size:15px;color:var(--ink-2)}

/* 表单 */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
@media (min-width:700px){.form{padding:28px}}
.form-row{display:grid;gap:8px;margin-bottom:16px}
.form-row label{font-size:14px;font-weight:600;color:var(--ink)}
.form-row label i{color:var(--brand);font-style:normal}
.form-row input,.form-row select,.form-row textarea{
  width:100%;height:46px;padding:0 13px;border:1px solid var(--line);border-radius:10px;
  font-size:15px;font-family:inherit;color:var(--ink);background:#fff;outline:none;
  transition:border-color .18s,box-shadow .18s;
}
.form-row textarea{height:96px;padding:12px 13px;resize:vertical;line-height:1.6}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);
}
.form-half{display:grid;gap:16px}
@media (min-width:700px){.form-half{grid-template-columns:1fr 1fr}}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-2);margin:4px 0 18px}
.agree input{width:17px;height:17px;flex:0 0 17px;margin-top:3px;accent-color:var(--brand)}
.agree a{color:var(--brand-deep);text-decoration:underline}
.form-tip{font-size:13px;color:var(--ink-3);margin-top:12px;text-align:center}
.msg{display:none;border-radius:10px;padding:13px 15px;font-size:14.5px;margin-bottom:16px}
.msg.ok{display:block;background:#f0fbf4;border:1px solid #bfe8cd;color:#1c6b39}
.msg.err{display:block;background:#fff2f3;border:1px solid #ffd0d5;color:#a42033}

/* 页脚 */
.footer{background:#23272e;color:rgba(255,255,255,.72);padding:44px 0 0;margin-top:0}
.footer-in{display:grid;gap:30px}
@media (min-width:820px){.footer-in{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.02em}
.footer p{font-size:13.8px;line-height:1.9}
.footer li a{font-size:14px;line-height:2.1;color:rgba(255,255,255,.72)}
.footer li a:hover{color:#fff}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.f-brand .brand-mark{box-shadow:none}
.f-brand b{color:#fff;font-size:clamp(14px,1.7vw,16.5px)}
.f-qr{background:#fff;border-radius:12px;padding:10px;width:124px}
.f-qr img{width:104px;height:104px}
.f-qr span{display:block;text-align:center;font-size:11px;color:var(--ink-3);margin-top:4px;line-height:1.4}
.f-legal{
  margin-top:34px;border-top:1px solid rgba(255,255,255,.12);padding:18px 0 22px;
  display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;font-size:12.8px;color:rgba(255,255,255,.5);
}
.f-legal a{color:rgba(255,255,255,.5);text-decoration:underline}
.f-legal a:hover{color:#fff}

/* 右下悬浮二维码 */
.qr-fab{
  position:fixed;right:16px;bottom:20px;z-index:70;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;
  box-shadow:0 8px 28px rgba(35,39,46,.16);display:flex;flex-direction:column;align-items:center;gap:5px;
  cursor:pointer;transition:transform .2s,box-shadow .2s;
}
.qr-fab:hover{transform:translateY(-3px);box-shadow:0 12px 34px rgba(232,41,76,.22)}
.qr-fab img{width:74px;height:74px}
.qr-fab span{font-size:11px;color:var(--brand-deep);font-weight:600;white-space:nowrap}
@media (max-width:520px){.qr-fab img{width:62px;height:62px}.qr-fab{padding:8px}}

/* 二维码弹层 */
.modal{
  position:fixed;inset:0;z-index:90;background:rgba(23,26,31,.5);
  display:flex;align-items:center;justify-content:center;padding:22px;
  opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s;
}
.modal.open{opacity:1;visibility:visible}
.modal-box{
  background:#fff;border-radius:18px;padding:26px 22px;text-align:center;max-width:340px;width:100%;
  transform:translateY(10px);transition:transform .24s;
}
.modal.open .modal-box{transform:none}
.modal-box h3{font-size:19px}
.modal-box p{font-size:14px;color:var(--ink-2);margin-top:8px}
.modal-qr{margin:18px auto 4px;width:196px;height:196px;border:1px solid var(--line);border-radius:12px;padding:10px}
.modal-close{
  margin-top:16px;width:100%;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;font-size:15px;color:var(--ink-2);cursor:pointer;
}

/* 小屏微调 */
@media (max-width:380px){
  .hero h1{font-size:29px}
  .btn{padding:0 16px;font-size:14.5px}
}