:root{
  --brand:#74b81e;--brand-d:#548a10;--brand-l:#f0f8e1;--brand-2:#c9dd7a;
  --ink:#1c2416;--ink2:#4d564a;--ink3:#818b7a;
  --bg:#fff;--bg2:#fafcf4;--line:#e7eeda;--wrap:1140px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;background:none;border:0;cursor:pointer;color:inherit}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 22px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- header ---------- */
.sh{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .2s}
.sh.on{border-bottom-color:var(--line)}
.sh-in{display:flex;align-items:center;gap:26px;height:66px}
.sh-brand{display:flex;align-items:center;gap:10px;flex:none}
.sh-brand img{width:38px;height:38px;border-radius:11px;object-fit:cover}
.sh-brand strong{display:block;font-size:16px;letter-spacing:.2px;line-height:1.2}
.sh-brand small{display:block;font-size:11px;color:var(--ink3);letter-spacing:.4px}
.sh nav{display:flex;gap:24px;margin-left:auto;font-size:14px;color:var(--ink2)}
.sh nav a{position:relative;padding:6px 0}
.sh nav a:hover{color:var(--brand-d)}
.sh nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .2s}
.sh nav a:hover::after{transform:scaleX(1)}
.sh-cta{flex:none;display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 18px;border-radius:19px;
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;box-shadow:0 2px 6px rgba(84,138,16,.28);transition:.2s}
.sh-cta:hover{background:var(--brand-d)}
.sh-menu{display:none;margin-left:auto;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:52px;padding:0 30px;border-radius:26px;
  background:var(--brand);color:#fff;font-size:16px;font-weight:600;letter-spacing:.3px;
  box-shadow:0 2px 8px rgba(84,138,16,.32);transition:transform .18s,background .18s}
.btn:hover{background:var(--brand-d);transform:translateY(-1px)}
.btn svg{width:18px;height:18px}
.btn-light{background:#fff;color:var(--brand-d);box-shadow:0 2px 10px rgba(20,30,10,.22)}
.btn-light:hover{background:#f4fae9}
.ghost{display:inline-flex;align-items:center;justify-content:center;height:52px;padding:0 24px;border-radius:26px;
  border:1px solid var(--brand-2);background:#fff;color:var(--brand-d);font-size:15px;font-weight:600;
  transition:border-color .2s,background .2s}
.ghost:hover{border-color:var(--brand);background:var(--brand-l)}

/* ---------- hero（居中 + 书卡） ---------- */
.hero{position:relative;overflow:hidden;padding:66px 0 74px}
.hero--center{text-align:center;background:
  radial-gradient(60% 52% at 50% 0%,var(--brand-l),transparent 70%),
  linear-gradient(180deg,#fbfdf5,#fff 78%)}
.hero--center::before{content:"";position:absolute;left:-120px;top:120px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(201,221,122,.32),transparent 70%)}
.hero--center::after{content:"";position:absolute;right:-90px;top:60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(116,184,30,.14),transparent 70%)}
.hero-txt{position:relative;z-index:2}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:1.6px;color:var(--brand-d);
  text-transform:uppercase;font-weight:700}
.kicker i{width:22px;height:2px;background:var(--brand);display:inline-block}
.hero h1{font-size:58px;line-height:1.05;letter-spacing:-1.2px;margin:16px 0 14px;font-weight:800}
.hero .lead{font-size:21px;font-weight:600;color:var(--ink);margin-bottom:12px}
.hero .desc{font-size:15px;color:var(--ink2);max-width:620px;margin:0 auto;line-height:1.85}
.acts{display:flex;justify-content:center;align-items:center;gap:14px;margin:26px 0 24px;flex-wrap:wrap}
.facts{display:flex;justify-content:center;gap:34px;flex-wrap:wrap;margin-top:4px}
.facts li{font-size:14px;font-weight:700}
.facts li span{display:block;font-size:12.5px;color:var(--ink3);font-weight:400;margin-top:2px}
.upd{font-size:12.5px;color:var(--ink3);margin-top:16px}
.upd time{font-variant-numeric:tabular-nums}

.book-row{position:relative;z-index:2;display:flex;justify-content:center;align-items:flex-end;margin-top:46px}
.book{width:190px;border-radius:14px;overflow:hidden;background:#fff;border:5px solid #fff;
  box-shadow:0 22px 42px -26px rgba(24,36,14,.55)}
.book img{width:100%;height:100%;object-fit:cover}
.book.b1{transform:rotate(-7deg) translate(20px,14px);z-index:1;height:338px}
.book.b2{width:216px;height:404px;z-index:3;box-shadow:0 30px 52px -24px rgba(24,36,14,.6)}
.book.b3{transform:rotate(7deg) translate(-20px,14px);z-index:2;height:338px}
.book-row::after{content:"";position:absolute;left:50%;bottom:-22px;transform:translateX(-50%);
  width:60%;height:26px;background:radial-gradient(closest-side,rgba(28,36,22,.18),transparent);filter:blur(6px)}

/* ---------- section 公共 ---------- */
section{position:relative}
.sec-h{max-width:680px;margin-bottom:40px}
.sec-k{font-size:12px;letter-spacing:2px;font-weight:700;color:var(--brand-d);text-transform:uppercase}
.sec-h h2{font-size:38px;line-height:1.22;letter-spacing:-.6px;margin:10px 0 12px;font-weight:800}
.sec-h p{font-size:15px;color:var(--ink2)}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* ---------- 特色 ---------- */
.feat{padding:84px 0 78px;background:var(--bg2)}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 24px 24px;
  transition:transform .2s,border-color .2s}
.feat-card:nth-child(2n){background:var(--brand-l);border-color:#e2efc8}
.feat-card:hover{transform:translateY(-2px);border-color:var(--brand)}
.feat-no{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;
  background:#fff;border:1px solid var(--brand-2);color:var(--brand-d);font-size:12.5px;font-weight:800;letter-spacing:.5px}
.feat-card:nth-child(2n) .feat-no{background:#fff;border-color:var(--brand)}
.feat-card h4{font-size:18px;font-weight:700;margin:14px 0 6px}
.feat-card p{font-size:14px;color:var(--ink2)}

/* ---------- 功能与界面 ---------- */
.show{padding:88px 0 82px;background:#fff}
.show-head{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:end;margin-bottom:36px}
.show-head .ticks{margin-top:0}
.ticks{display:grid;gap:10px}
.ticks li{position:relative;padding-left:26px;font-size:14.5px;color:var(--ink2)}
.ticks li::before{content:"";position:absolute;left:0;top:6px;width:14px;height:14px;border-radius:50%;
  background:var(--brand-l);border:1px solid var(--brand)}
.ticks li::after{content:"";position:absolute;left:4px;top:9px;width:6px;height:3px;border-left:1.6px solid var(--brand-d);
  border-bottom:1.6px solid var(--brand-d);transform:rotate(-45deg)}
.shots{display:flex;gap:22px;overflow-x:auto;padding:6px 2px 14px;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch}
.shots figure{flex:0 0 246px;scroll-snap-align:center;border-radius:28px;background:#1d2517;border:8px solid #1d2517;
  box-shadow:0 20px 38px -22px rgba(24,36,14,.6);overflow:hidden}
.shots img{width:100%;height:436px;object-fit:cover;object-position:top;border-radius:20px}
.shots figcaption{font-size:12.5px;color:var(--ink3);text-align:center;padding:9px 0 2px;background:#fff}
.show .shots figure{background:#1d2517}
.show .shots figcaption{background:transparent;color:#eaf3da}

/* ---------- 使用指南 ---------- */
.guide{padding:84px 0 80px;background:#fff;border-top:1px solid var(--line)}
.guide .sec-h{margin-bottom:28px}
.guide-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;counter-reset:g}
.guide-list li{position:relative;padding:18px 20px 18px 58px;border-radius:14px;background:var(--bg2);
  font-size:14px;color:var(--ink2)}
.guide-list li::before{counter-increment:g;content:counter(g);position:absolute;left:18px;top:17px;
  width:26px;height:26px;border-radius:9px;background:var(--brand);color:#fff;font-size:13px;font-weight:800;
  display:flex;align-items:center;justify-content:center}
.gnote{font-size:12.5px;color:var(--ink3);margin-top:16px}

/* ---------- FAQ ---------- */
.faq{padding:86px 0 82px;background:var(--bg2)}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px}
.faq-item h3{font-size:16.5px;font-weight:700;margin-bottom:8px;padding-left:18px;position:relative}
.faq-item h3::before{content:"Q";position:absolute;left:0;top:1px;font-size:13px;color:var(--brand);font-weight:800}
.faq-item p{font-size:14px;color:var(--ink2);padding-left:18px}
.faq-item.wide{grid-column:span 2}

/* ---------- voices ---------- */
.voices{padding:86px 0 80px;background:#fff}
.voice-list{display:grid;gap:16px}
.voice{margin:0;display:grid;gap:12px;padding:24px 26px;background:#fff;border:1px solid var(--line);
  border-left:3px solid var(--brand);border-radius:0 18px 18px 0}
.voice:nth-child(2n){background:#fcfff6}
.voice p{font-size:14.5px;color:var(--ink2)}
.voice footer{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--ink3)}
.voice footer i{width:26px;height:26px;border-radius:50%;background:var(--brand-l);color:var(--brand-d);
  font-style:normal;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.voice footer cite{font-style:normal;font-weight:600;color:var(--ink2)}
.voice footer time{margin-left:auto;font-size:12px;font-variant-numeric:tabular-nums}

/* ---------- get ---------- */
.get{padding:64px 0;background:#22380f;color:#fff}
.get-in{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.get h2{font-size:34px;letter-spacing:-.5px;margin-bottom:8px;font-weight:800}
.get p{font-size:14.5px;color:rgba(255,255,255,.68);max-width:560px}

/* ---------- footer ---------- */
.ft{background:#f4f8ea;border-top:1px solid #e2ecd2;padding:40px 0 34px}
.ft-in{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
.ft-brand{display:flex;align-items:center;gap:10px}
.ft-brand img{width:32px;height:32px;border-radius:9px;object-fit:cover}
.ft-brand strong{font-size:15px}
.ft p{font-size:12.5px;color:var(--ink3);max-width:430px;margin-top:10px}
.ft-links{display:flex;gap:18px;font-size:13px;color:var(--ink3)}
.ft-links a:hover{color:var(--brand-d)}
.ft-copy{font-size:12px;color:var(--ink3);margin-top:22px;border-top:1px solid #e2ecd2;padding-top:16px}

/* ---------- backtop ---------- */
.backtop{position:fixed;right:24px;bottom:84px;z-index:50;width:42px;height:42px;border-radius:50%;
  display:none;align-items:center;justify-content:center;background:#fff;border:1px solid var(--line);
  color:var(--ink);box-shadow:0 10px 24px -14px rgba(24,36,14,.6)}
.backtop.on{display:flex}
.backtop:hover{color:var(--brand-d);border-color:var(--brand)}
@media(max-width:768px){.backtop{right:16px;bottom:76px}}

/* 入场：加载即播，无 JS 也可见 */
.rv{animation:rvIn .5s ease both}
@keyframes rvIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.rv{animation:none}}

/* ---------- responsive ---------- */
@media(max-width:960px){
  .hero h1{font-size:44px}
  .feat-grid,.guide-list,.faq-grid{grid-template-columns:1fr}
  .faq-item.wide{grid-column:auto}
  .show-head{grid-template-columns:1fr;gap:26px}
  .sec-h h2{font-size:30px}
  .sh nav{display:none}
  .sh-menu{display:inline-flex}
  .sh-cta{margin-left:10px}
  .sh nav.open{display:flex;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;
    padding:14px 22px 18px;gap:14px;border-bottom:1px solid var(--line)}
}
@media(max-width:560px){
  .hero{padding:42px 0 52px}
  .hero h1{font-size:34px}
  .hero .lead{font-size:18px}
  .book{width:132px}.book.b2{width:152px;height:300px}.book.b1,.book.b3{height:252px}
  .book-row{margin-top:36px}
  .get h2{font-size:26px}
  .btn,.acts .ghost{width:100%}
  .facts{gap:18px}
  .shots figure{flex:0 0 210px}
  .shots img{height:372px}
}