/* ===== 有Ta 官网样式 ===== */
:root{
  --yt:#FF505B;            /* 主色 coral */
  --yt-dark:#E63E49;
  --yt-soft:#FFE9EB;       /* 浅主色底 */
  --yt-soft2:#FFF4F5;
  --ink:#1C1C28;          /* 主文字 */
  --ink-2:#3A3A4A;
  --muted:#8A8A99;        /* 次要文字 */
  --line:#ECECF1;
  --bg:#FFFFFF;
  --bg-warm:#FFF8F7;      /* 暖白区块 */
  --bg-soft:#F7F8FA;
  --green:#21BA72;        /* 认证/通过 */
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 12px 40px rgba(28,26,40,.08);
  --shadow-sm:0 6px 20px rgba(28,26,40,.06);
  --maxw:1140px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.kicker{display:inline-block;font-size:14px;font-weight:700;color:var(--yt);letter-spacing:.04em;margin-bottom:14px}
h1,h2,h3,h4,h5{line-height:1.25;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(26px,4vw,40px);margin-bottom:16px}
h3{font-size:20px}
section{position:relative}
.lead{font-size:17px;color:var(--ink-2);max-width:560px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 22px;border-radius:999px;font-weight:700;font-size:15px;cursor:pointer;transition:.22s;border:1px solid transparent;white-space:nowrap}
.btn-lg{padding:15px 28px;font-size:16px}
.btn-primary{background:var(--yt);color:#fff;box-shadow:0 10px 24px rgba(255,80,91,.30)}
.btn-primary:hover{background:var(--yt-dark);transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--yt);color:var(--yt)}
.btn-outline{background:#fff;color:var(--yt);border-color:var(--yt)}
.btn-outline:hover{background:var(--yt-soft)}

/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:.25s}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:14px 22px;display:flex;align-items:center;gap:18px;transition:.25s}
.nav.scrolled{background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(12px);box-shadow:0 1px 0 var(--line)}
.nav.scrolled .nav-inner{padding-top:10px;padding-bottom:10px}
.brand{display:flex;align-items:center;gap:8px;font-weight:900;font-size:21px;color:var(--ink);letter-spacing:.02em}
.brand-mark{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;overflow:hidden;flex-shrink:0;background:var(--yt-soft)}
.brand-mark img{width:100%;height:100%;object-fit:cover;display:block}
.brand-text{background:linear-gradient(135deg,var(--yt),#FF7A85);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:26px;margin-left:18px;flex:1}
.nav-links a{font-size:15px;color:var(--ink-2);font-weight:600;position:relative;padding:4px 0}
.nav-links a:hover{color:var(--yt)}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--yt);transform:scaleX(0);transition:.22s}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-cta{display:flex}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}

/* ===== Hero ===== */
.hero{padding:140px 0 70px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(60% 60% at 85% 10%,rgba(255,80,91,.12),transparent 60%),
  radial-gradient(50% 50% at 5% 80%,rgba(255,180,170,.14),transparent 60%);
  z-index:-1}
.hero-inner{max-width:var(--maxw);margin:0 auto;padding:0 22px;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.eyebrow{display:inline-block;background:#fff;border:1px solid var(--yt-soft);color:var(--yt);font-weight:700;font-size:13px;padding:6px 14px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:clamp(34px,5.4vw,56px);margin-bottom:22px}
.hero h1 .hl{color:var(--yt)}
.hero .lead{margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-stats{display:flex;gap:30px;list-style:none;flex-wrap:wrap}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:18px;color:var(--ink)}
.hero-stats span{font-size:13px;color:var(--muted)}

/* 手机样机 */
.hero-phone{position:relative;display:flex;justify-content:center}
.phone{width:280px;height:560px;background:#11121a;border-radius:42px;padding:12px;box-shadow:0 30px 60px rgba(28,26,40,.22),inset 0 0 0 2px #2a2c3a;position:relative}
.phone-notch{position:absolute;top:12px;left:50%;transform:translateX(-50%);width:120px;height:22px;background:#11121a;border-radius:0 0 16px 16px;z-index:3}
.phone-screen{width:100%;height:100%;background:linear-gradient(180deg,#fff,#FFF4F5);border-radius:32px;overflow:hidden;display:flex;flex-direction:column}
.app-bar{display:flex;align-items:center;gap:8px;padding:30px 16px 12px;font-weight:800;font-size:17px}
.app-dot{width:8px;height:8px;border-radius:50%;background:var(--yt)}
.card{background:#fff;margin:8px 14px;padding:14px;border-radius:18px;box-shadow:var(--shadow-sm)}
.card-dim{opacity:.55}
.card-avatar{width:56px;height:56px;border-radius:50%;position:relative;flex:0 0 auto}
.card-avatar.verify,.verify{position:absolute;right:-2px;bottom:-2px;width:20px;height:20px;background:var(--green);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;border:2px solid #fff}
.card-name{font-weight:800;font-size:16px;margin-top:8px}
.card-age{color:var(--muted);font-weight:600;font-size:13px;margin-left:4px}
.card-meta{font-size:12px;color:var(--muted);margin-top:2px}
.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.card-tags span{font-size:11px;background:var(--yt-soft);color:var(--yt-dark);padding:3px 9px;border-radius:999px}
.card-bio{font-size:12px;color:var(--ink-2);margin-top:10px;font-style:italic}
.card-actions{display:flex;justify-content:center;gap:40px;margin-top:14px}
.act{width:46px;height:46px;border-radius:50%;border:0;font-size:20px;cursor:pointer;box-shadow:var(--shadow-sm)}
.act-no{background:#fff;color:#9aa;transform:rotate(45deg)}
.act-like{background:var(--yt);color:#fff}
.float-chip{position:absolute;background:#fff;box-shadow:var(--shadow);border-radius:999px;padding:9px 15px;font-size:12.5px;font-weight:600;color:var(--ink)}
.chip-1{top:60px;left:-18px}
.chip-2{bottom:90px;right:-22px;color:var(--yt-dark)}

/* ===== 通用 section ===== */
.section{padding:84px 0}
.section-head{max-width:680px;margin:0 auto 50px;text-align:center}
.section-head p{color:var(--muted);font-size:16px;margin-top:6px}
.trust{background:var(--bg-warm)}
.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}

.card-feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:.25s}
.card-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.fi{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px}
.fi-real{background:linear-gradient(135deg,#FF8A93,#FF505B)}
.fi-edu{background:linear-gradient(135deg,#7FB8FF,#5C7CFF)}
.fi-face{background:linear-gradient(135deg,#7AD6B0,#21BA72)}
.fi-check{background:linear-gradient(135deg,#FFB36B,#FF7A85)}
.fi-safe{background:linear-gradient(135deg,#FF8A93,#FF505B)}
.fi-lock{background:linear-gradient(135deg,#7FB8FF,#5C7CFF)}
.fi-report{background:linear-gradient(135deg,#FFB36B,#FF7A85)}
.fi-img{background:transparent;padding:0;overflow:hidden}
.fi-img img{width:100%;height:100%;object-fit:cover;display:block;border-radius:14px}
.card-feature h3{margin-bottom:8px}
.card-feature p{color:var(--muted);font-size:14.5px}

.trust-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center}
.trust-bar strong{display:block;font-size:26px;color:var(--yt);font-weight:900}
.trust-bar span{font-size:13px;color:var(--muted)}

/* ===== 功能特色 ===== */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center;margin-bottom:64px}
.feature-row:last-child{margin-bottom:0}
.feature-row.reverse .feature-text{order:2}
.step-no{display:inline-block;font-size:13px;font-weight:800;color:var(--yt);letter-spacing:.06em;margin-bottom:10px}
.feature-text h3{font-size:24px;margin-bottom:14px}
.feature-text p{color:var(--ink-2);margin-bottom:16px}
.ticks{list-style:none;display:flex;flex-direction:column;gap:10px}
.ticks li{position:relative;padding-left:26px;color:var(--ink-2);font-size:15px}
.ticks li::before{content:"";position:absolute;left:0;top:7px;width:16px;height:16px;border-radius:50%;background:var(--yt-soft);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24'%3E%3Cpath d='M9.5 16.2 4.8 11.5l1.4-1.4 3.3 3.3 8.3-8.3 1.4 1.4-9.7 9.7Z' fill='%23FF505B'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}

/* 功能配图 */
.feature-art{position:relative;min-height:300px;display:flex;align-items:center;justify-content:center}
.art-pill{position:absolute;top:0;left:0;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:999px;padding:9px 16px;font-size:13px;font-weight:600;color:var(--ink)}
.art-card{width:230px;background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:16px;display:flex;align-items:center;gap:14px;position:relative}
.art-card--2{position:absolute;bottom:-30px;right:-10px;transform:rotate(4deg);width:200px}
.art-avatar{width:50px;height:50px;border-radius:50%;flex:0 0 auto}
.art-lines{flex:1;display:flex;flex-direction:column;gap:7px}
.art-lines i{height:9px;border-radius:6px;background:var(--bg-soft)}
.art-lines i:nth-child(1){width:90%}
.art-lines i:nth-child(2){width:70%}
.art-lines i:nth-child(3){width:55%}
.art-like{position:absolute;right:14px;top:14px;width:34px;height:34px;border-radius:50%;background:var(--yt);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:0 6px 16px rgba(255,80,91,.35)}

.match-badge{position:absolute;top:0;background:linear-gradient(135deg,var(--yt),#FF7A85);color:#fff;font-weight:800;padding:8px 18px;border-radius:999px;box-shadow:var(--shadow-sm);font-size:14px}
.bubble{max-width:200px;background:#fff;border-radius:18px;padding:14px 16px;box-shadow:var(--shadow-sm);font-size:14px;color:var(--ink-2);position:relative}
.bubble-l{margin:54px 0 16px 0;align-self:flex-start}
.bubble-r{margin-left:auto;background:var(--yt-soft);color:var(--yt-dark)}

.post{width:260px;background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:16px}
.post-head{display:flex;align-items:center;gap:10px;font-size:14px;margin-bottom:10px}
.post-ava{width:34px;height:34px;border-radius:50%}
.post-text{font-size:14px;color:var(--ink-2);margin-bottom:12px}
.post-imgs{display:flex;gap:8px;margin-bottom:10px}
.post-imgs i{width:64px;height:64px;border-radius:12px;display:block}
.post-meta{font-size:12px;color:var(--muted)}

.note{width:250px;background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:18px;position:relative}
.note-head{font-weight:800;color:var(--yt);margin-bottom:12px}
.note-body{font-size:14px;color:var(--ink-2);background:var(--yt-soft);border-radius:12px;padding:12px;line-height:1.6}
.note-foot{font-size:12px;color:var(--muted);margin-top:12px;text-align:right}

/* ===== 会员 ===== */
.vip{background:linear-gradient(180deg,#FFF4F5,#FFFFFF)}
.vip-bg{position:absolute;inset:0;background:radial-gradient(40% 40% at 80% 0,rgba(255,80,91,.10),transparent 60%);z-index:-1}
.priv-grid{margin-bottom:46px}
.priv{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;text-align:center;transition:.25s}
.priv:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--yt-soft)}
.priv-ic{width:54px;height:54px;margin:0 auto 12px;border-radius:16px;background:var(--yt-soft);display:flex;align-items:center;justify-content:center;font-size:26px}
.priv h4{font-size:16px;margin-bottom:6px}
.priv p{font-size:13px;color:var(--muted)}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:880px;margin:0 auto}
.plan{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px 24px;text-align:center;position:relative;transition:.25s}
.plan:hover{box-shadow:var(--shadow)}
.plan-hot{border:2px solid var(--yt);box-shadow:var(--shadow);transform:translateY(-8px)}
.plan-flag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--yt);color:#fff;font-size:12px;font-weight:800;padding:5px 16px;border-radius:999px}
.plan-name{font-weight:800;font-size:17px;margin-bottom:10px}
.plan-price{font-size:40px;font-weight:900;color:var(--ink);line-height:1}
.plan-price .cur{font-size:20px;vertical-align:6px;margin-right:2px}
.plan-price .per{font-size:14px;color:var(--muted);font-weight:600;margin-left:4px}
.plan-origin{font-size:13px;color:var(--muted);text-decoration:line-through;margin:8px 0 16px}
.plan ul{list-style:none;text-align:left;display:inline-block;margin:0 0 20px;color:var(--ink-2);font-size:14px}
.plan li{padding:5px 0 5px 24px;position:relative}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800}
.coin-tip{text-align:center;margin-top:30px;color:var(--muted);font-size:14px}
.coin-tip b{color:var(--yt-dark)}

/* ===== 安全 ===== */
.safety{background:var(--bg-soft)}
.safety-note{max-width:760px;margin:34px auto 0;background:#fff;border:1px solid var(--line);border-left:4px solid var(--yt);border-radius:14px;padding:16px 20px;color:var(--ink-2);font-size:14.5px}

/* ===== 脱单故事 ===== */
.stories{background:var(--bg-warm)}
.story{background:#fff;border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);transition:.25s}
.story:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.story-quote{font-size:16px;color:var(--ink);line-height:1.7;position:relative;padding-top:18px}
.story-quote::before{content:"“";position:absolute;top:-6px;left:-4px;font-size:46px;color:var(--yt-soft);font-family:Georgia,serif;line-height:1}
.story-who{display:flex;align-items:center;gap:12px;margin-top:20px}
.story-ava{width:42px;height:42px;border-radius:50%}
.story-who b{display:block;font-size:15px}
.story-who span{font-size:12.5px;color:var(--muted)}
.stories-cta{text-align:center;margin-top:38px;font-size:16px;color:var(--ink-2)}
.link-arrow{color:var(--yt);font-weight:700}

/* ===== 下载 ===== */
.download{background:linear-gradient(135deg,#FF505B,#FF7A85);color:#fff}
.download-inner{display:grid;grid-template-columns:1fr auto;gap:50px;align-items:center}
.download .kicker{color:rgba(255,255,255,.9)}
.download h2{color:#fff}
.download p{color:rgba(255,255,255,.92);max-width:420px}
.download p b{font-weight:800}
.steps{list-style:none;margin-top:20px;display:flex;flex-direction:column;gap:14px}
.steps li{display:flex;align-items:center;gap:12px;font-size:15.5px;color:#fff}
.steps li span{width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.22);display:flex;align-items:center;justify-content:center;font-weight:800;flex:0 0 auto}
.download-qr{text-align:center}
.qr-frame{width:200px;height:200px;background:#fff;border-radius:22px;padding:14px;box-shadow:0 20px 50px rgba(0,0,0,.18);position:relative;margin:0 auto;display:flex;align-items:center;justify-content:center;overflow:hidden}
.qr-img{width:100%;height:100%;object-fit:contain;border-radius:8px;display:block}
.qr-tip{margin-top:16px;font-weight:700;font-size:15px}
.qr-sub{font-size:12px;color:rgba(255,255,255,.8);margin-top:4px}

/* ===== 页脚 ===== */
.footer{background:#15161F;color:#cfd0da;padding:56px 0 0}
.footer-inner{display:grid;grid-template-columns:1.3fr 2fr;gap:40px;padding-bottom:40px}
.footer .brand{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;color:#9a9bab;line-height:1.7}
.footer-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.footer-cols h5{color:#fff;font-size:14px;margin-bottom:14px}
.footer-cols a{display:block;font-size:13.5px;color:#9a9bab;padding:5px 0;transition:.2s}
.footer-cols a:hover{color:var(--yt)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;font-size:12.5px;color:#7d7e8c}
.footer-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.footer-bottom .beian{color:#7d7e8c;text-decoration:none}
.footer-bottom .beian:hover{color:var(--yt)}

/* ===== 动画 ===== */
.reveal{opacity:0;transform:translateY(24px);transition:.6s cubic-bezier(.22,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr}
  .hero-phone{margin-top:10px}
  .feature-row,.feature-row.reverse{grid-template-columns:1fr;gap:28px}
  .feature-row.reverse .feature-text{order:0}
  .download-inner{grid-template-columns:1fr;gap:34px;text-align:center}
  .download p{margin:0 auto}
  .steps{display:inline-flex}
  .footer-inner{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-5{grid-template-columns:repeat(2,1fr)}
  .trust-bar{grid-template-columns:repeat(2,1fr);gap:14px}
  .plans{grid-template-columns:1fr;max-width:420px}
  .plan-hot{transform:none}
}
@media (max-width:720px){
  .nav-links{position:fixed;top:62px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:8px 0;box-shadow:var(--shadow);transform:translateY(-130%);transition:.28s;margin-left:0}
  .nav-links.open{transform:none}
  .nav-links a{padding:14px 22px}
  .nav-links a::after{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .section{padding:60px 0}
  .grid-3{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr}
  .grid-5{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:repeat(2,1fr)}
  .chip-1{left:0}.chip-2{right:0}
  .hero-stats{gap:20px}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
}