/* 阅读app mmsppro.cn - 重制版
   四色：暖黑 #2b2926 × 橙红 #d95b2a × 墨青 #1f4e5f × 白 */
:root{
  --ink:#2b2926;
  --ink2:#1f4e5f;
  --orange:#d95b2a;
  --orange-d:#b8441c;
  --paper:#f5f0e8;
  --mist:#f8f5ef;
  --tx:#5a534a;
  --line:rgba(43,41,38,.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased;}
img{display:block;max-width:100%;}
a{color:inherit;}
[id]{scroll-margin-top:84px;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

.btn{display:inline-flex;align-items:center;justify-content:center;font-weight:700;border-radius:8px;text-decoration:none;transition:.2s;border:none;cursor:pointer;font-size:15px;}
.btn-pri{background:var(--orange);color:#fff;padding:12px 26px;border-bottom:3px solid var(--orange-d);}
.btn-pri:hover{background:var(--orange-d);}
.btn-line{background:transparent;color:var(--ink);padding:12px 26px;border:2px solid var(--ink);}
.btn-line:hover{background:var(--ink);color:#fff;}
.btn-lg{font-size:16.5px;padding:15px 34px;}
.hd-cta{padding:9px 20px;font-size:14px;}

.hd{position:sticky;top:0;z-index:60;background:rgba(245,240,232,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
.hd-in{display:flex;align-items:center;gap:26px;height:66px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand img{width:40px;height:40px;border-radius:8px;}
.brand-t{display:flex;flex-direction:column;line-height:1.25;}
.brand-t strong{font-size:17px;letter-spacing:.5px;}
.brand-t small{font-size:11.5px;color:var(--orange);letter-spacing:1px;}
.nav{display:flex;align-items:center;gap:22px;margin-left:auto;}
.nav a{text-decoration:none;font-size:14px;color:var(--tx);padding:6px 2px;border-bottom:2px solid transparent;transition:.2s;white-space:nowrap;}
.nav a:hover{color:var(--orange);}
.nav a.on{color:var(--orange);font-weight:700;border-bottom-color:var(--orange);}
.hd-r{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav + .hd-r{margin-left:0;}
.burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;background:var(--ink);border:none;border-radius:8px;cursor:pointer;padding:0 10px;}
.burger span{display:block;height:2px;background:#fff;border-radius:2px;transition:.25s;}
.burger.on span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.on span:nth-child(2){opacity:0;}
.burger.on span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 英雄区：翻页书台 */
.hero{padding:66px 0 88px;background:var(--paper);background-image:radial-gradient(rgba(43,41,38,.05) 1px,transparent 1.6px);background-size:24px 24px;}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.kick{display:inline-flex;align-items:center;gap:9px;font-size:13px;letter-spacing:2.5px;color:var(--orange);font-weight:700;margin:0 0 16px;}
.kick i{font-style:normal;background:var(--orange);color:#fff;min-width:22px;height:22px;display:inline-flex;align-items:center;justify-content:center;border-radius:4px;font-size:12.5px;padding:0 4px;}
.hero-l h1{margin:0 0 18px;font-size:56px;line-height:1.12;letter-spacing:2px;}
.hero-l h1::after{content:"";display:block;width:74px;height:5px;margin-top:16px;background:linear-gradient(90deg,var(--orange) 0 62%,var(--ink2) 62% 100%);border-radius:3px;}
.lead{margin:0 0 26px;font-size:15.5px;color:var(--tx);line-height:1.9;text-align:justify;}
.hero-acts{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px;}
.hero-points{list-style:none;display:flex;gap:10px;flex-wrap:wrap;margin:0;padding:0;}
.hero-points li{font-size:13px;color:var(--orange);background:#fff;border:1px solid rgba(217,91,42,.35);border-radius:999px;padding:5px 14px;}

.desk{position:relative;width:min(440px,100%);margin:0 auto;padding:30px 20px 20px;}
.desk-mat{position:absolute;inset:10px -10px -10px 10px;background:linear-gradient(135deg,var(--ink2),var(--ink));border-radius:16px;box-shadow:14px 16px 0 rgba(43,41,38,.18);}
.desk-clip{position:absolute;z-index:5;top:0;left:50%;transform:translateX(-50%) rotate(-2deg);background:var(--orange);color:#fff;padding:8px 22px;border-radius:4px;display:flex;flex-direction:column;align-items:center;line-height:1.3;box-shadow:0 6px 14px rgba(217,91,42,.4);}
.desk-clip i{font-style:normal;font-size:10px;letter-spacing:3px;opacity:.85;}
.desk-clip b{font-size:14px;letter-spacing:1px;}
.desk-clip small{font-size:10px;opacity:.8;}
.page{margin:0;position:relative;background:#fff;border-radius:6px;overflow:hidden;box-shadow:0 8px 20px rgba(0,0,0,.18);}
.page img{width:100%;height:auto;display:block;}
.pg-main{position:relative;z-index:3;width:62%;margin:30px auto 0;border:5px solid #fff;border-radius:8px;}
.pg-side{position:absolute;z-index:2;width:32%;top:70px;}
.pg-a{left:0;transform:rotate(-7deg);}
.pg-b{right:0;transform:rotate(6deg);z-index:1;}
.desk-stamp{position:absolute;z-index:6;bottom:6px;right:14px;display:flex;flex-direction:column;align-items:center;gap:2px;width:58px;height:58px;border-radius:50%;background:#fff;border:2px solid var(--orange);}
.desk-stamp img{width:28px;height:28px;border-radius:50%;object-fit:cover;margin-top:6px;}
.desk-stamp i{font-style:normal;font-size:10px;color:var(--orange);font-weight:700;letter-spacing:1px;}
.desk-tag{position:absolute;z-index:6;background:#fff;border:1.5px solid var(--ink2);border-radius:8px;padding:7px 14px;display:flex;flex-direction:column;line-height:1.3;}
.desk-tag b{font-size:13px;color:var(--ink2);letter-spacing:.5px;}
.desk-tag span{font-size:10.5px;color:var(--tx);}
.dt-1{top:52%;left:-18px;transform:rotate(-4deg);box-shadow:4px 5px 0 var(--ink2);}
.dt-2{bottom:18%;right:-14px;transform:rotate(4deg);box-shadow:-4px 5px 0 var(--orange);}

/* 数据带 */
.statband{background:linear-gradient(135deg,var(--ink2),var(--ink));padding:38px 0;}
.stat-in{display:flex;justify-content:center;gap:64px;flex-wrap:wrap;}
.stat{display:flex;flex-direction:column;align-items:center;gap:8px;}
.s-num{font-size:38px;font-weight:800;color:#fff;letter-spacing:1px;font-variant-numeric:tabular-nums;}
.s-l{font-size:13.5px;color:#8fb3c4;letter-spacing:3px;}

/* 通用区块 */
.sec{padding:80px 0;background:#fff;}
.sec-ink{background:var(--ink);color:#f3ede1;}
.sec-mist{background:var(--mist);}
.sec-h{max-width:720px;margin:0 auto 46px;text-align:center;}
.sec-h .kick{justify-content:center;}
.sec-h-light .kick{color:#d9a06a;}
.sec-h-light .kick i{background:#d9a06a;color:var(--ink);}
.sec-h h2{margin:0 0 12px;font-size:29px;letter-spacing:1px;line-height:1.35;}
.sec-h-light h2{color:#f8f4ea;}
.sec-h h2::after{content:"";display:block;width:56px;height:4px;margin:14px auto 0;background:linear-gradient(90deg,var(--orange),var(--ink2));border-radius:2px;}
.sec-h-light h2::after{background:var(--orange);}
.sec-sub{margin:0;font-size:14.5px;color:var(--tx);}
.sec-h-light .sec-sub{color:#b8ad97;}

/* 六大本领：马赛克 */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.fg{position:relative;background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px 24px 24px;transition:transform .25s,box-shadow .25s;}
.fg::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;border-radius:10px 10px 0 0;}
.fg-1::before{background:var(--orange);}
.fg-2::before{background:var(--ink2);}
.fg-3::before{background:var(--ink);}
.fg-4::before{background:var(--orange);}
.fg-5::before{background:var(--ink2);}
.fg-6::before{background:var(--ink);}
.fg-1{box-shadow:10px 12px 0 rgba(217,91,42,.15);}
.fg-2{box-shadow:-10px 12px 0 rgba(31,78,95,.15);}
.fg-3{box-shadow:10px 12px 0 rgba(43,41,38,.12);}
.fg-4{box-shadow:-10px 12px 0 rgba(217,91,42,.15);}
.fg-5{box-shadow:10px 12px 0 rgba(31,78,95,.15);}
.fg-6{box-shadow:-10px 12px 0 rgba(43,41,38,.12);}
.fg:hover{transform:translateY(-6px);}
.fg-ico{font-size:30px;display:block;margin-bottom:12px;}
.fg h3{margin:0 0 8px;font-size:19px;letter-spacing:.5px;}
.fg p{margin:0;font-size:14px;color:var(--tx);line-height:1.8;}

/* 书源流程：时间线 */
.flow{display:flex;align-items:stretch;gap:0;justify-content:center;flex-wrap:wrap;}
.fl{flex:0 0 200px;background:#fff;border:2px solid var(--ink2);border-radius:10px;padding:22px 18px 18px;position:relative;}
.fl-no{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--orange);color:#fff;font-weight:800;font-size:16px;margin-bottom:12px;}
.fl-body h3{margin:0 0 6px;font-size:17px;color:var(--ink2);}
.fl-body p{margin:0;font-size:13.5px;color:var(--tx);line-height:1.75;}
.fl-arrow{flex:0 0 36px;display:flex;align-items:center;justify-content:center;color:var(--orange);font-size:24px;font-weight:800;}

/* 阅读定制 */
.custom-in{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;}
.custom-l h2{margin:12px 0;font-size:28px;letter-spacing:1px;}
.custom-l h2::after{content:"";display:block;width:56px;height:4px;margin:14px 0 0;background:linear-gradient(90deg,var(--orange),var(--ink2));border-radius:2px;}
.c-list{list-style:none;margin:26px 0 0;padding:0;display:grid;gap:14px;}
.c-list li{display:flex;gap:16px;align-items:center;background:var(--mist);border:1px solid var(--line);border-left:5px solid var(--orange);border-radius:6px;padding:14px 18px;}
.c-list li:nth-child(even){border-left-color:var(--ink2);}
.c-list b{flex:0 0 110px;font-size:15px;color:var(--ink2);}
.c-list li:nth-child(even) b{color:var(--orange);}
.c-list span{font-size:13.5px;color:var(--tx);}
.theme-show{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.ts-card{aspect-ratio:3/4;border-radius:10px;padding:16px;display:flex;flex-direction:column;justify-content:space-between;border:2px solid var(--line);}
.ts-day{background:#fff;color:var(--ink);}
.ts-night{background:#2a2a2e;color:#c8c8c8;}
.ts-paper{background:#f5e6c8;color:#6b5b3e;}
.ts-sepia{background:#c8e6c9;color:#2e4a2e;}
.ts-card span{font-size:15px;font-weight:700;}
.ts-card i{font-style:normal;font-size:12px;opacity:.8;}

/* 书架陈列截图 */
.shelf-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;}
.sh{margin:0;position:relative;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;display:flex;flex-direction:column;}
.sh-main{max-width:380px;margin:0 auto;box-shadow:0 18px 36px rgba(43,41,38,.18);}
.sh-corner{position:absolute;z-index:4;top:0;right:0;width:0;height:0;border-left:38px solid transparent;border-top:38px solid var(--orange);pointer-events:none;}
.sh-corner::after{content:"APP";position:absolute;top:-34px;right:2px;color:#fff;font-size:10px;font-weight:800;letter-spacing:1px;transform:rotate(45deg);}
.sh-no{position:absolute;z-index:3;top:12px;left:12px;background:var(--ink2);color:#fff;font-size:11.5px;letter-spacing:1.5px;padding:4px 11px;border-radius:3px;font-weight:700;}
.sh-main .sh-no{background:var(--orange);}
.sh img{width:100%;height:auto;display:block;margin:0 auto;}
.sh-main img{max-width:380px;}
.sh-sub{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-content:start;}
.sh-sub .sh{max-width:100%;}
.sh-sub .sh img{max-width:308px;}
.sh-sub .sh-a{transform:translateY(0);}
.sh-sub .sh-b{transform:translateY(18px);}
.sh-sub .sh-c{transform:translateY(0);}
.sh-sub .sh-d{transform:translateY(18px);}
.sh figcaption{padding:10px 16px;border-top:1px solid var(--line);background:linear-gradient(180deg,#fff,#f8f5ef);display:flex;flex-direction:column;gap:2px;}
.sh figcaption b{font-size:13.5px;color:var(--ink);letter-spacing:.5px;}
.sh figcaption span{font-size:11.5px;color:var(--tx);}
.sh-sub .sh figcaption{padding:8px 12px;}
.sh-sub .sh:nth-child(even) .sh-no{background:var(--orange);}
.sh-sub .sh:nth-child(even) figcaption{background:linear-gradient(180deg,#fff,#f3ecdf);}

/* FAQ 折叠 */
.faq-list{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 16px 32px rgba(43,41,38,.10);padding:0 26px 14px;}
.faq-list::before{content:"";display:block;height:7px;margin:0 -26px 6px;background:linear-gradient(90deg,var(--orange) 0 55%,var(--ink2) 55% 100%);}
.fq{border-bottom:1px dashed var(--line);}
.fq:last-child{border-bottom:none;}
.fq-h{width:100%;display:flex;align-items:center;gap:14px;background:none;border:none;padding:17px 2px;cursor:pointer;text-align:left;font-size:16.5px;color:var(--ink);font-family:inherit;}
.fq-h:hover b{color:var(--orange);}
.fq-no{flex:0 0 auto;background:var(--orange);color:#fff;font-size:12.5px;font-weight:700;padding:3px 10px;border-radius:3px;letter-spacing:1.5px;}
.fq-h b{font-weight:700;letter-spacing:.5px;transition:color .2s;}
.fq-arr{flex:0 0 auto;margin-left:auto;width:9px;height:9px;border-right:2px solid var(--orange);border-bottom:2px solid var(--orange);transform:rotate(45deg);transition:transform .28s;}
.fq.on .fq-arr{transform:rotate(225deg);}
.fq-b{max-height:0;overflow:hidden;transition:max-height .38s ease;}
.fq.on .fq-b{max-height:420px;}
.fq-b p{margin:0 0 18px;padding-left:48px;color:var(--tx);font-size:14.5px;line-height:1.9;text-align:justify;}

/* 书页信笺评论 */
.letters{display:flex;flex-direction:column;gap:26px;max-width:920px;margin:0 auto;}
.lt{position:relative;background:#fff;border:1px solid var(--line);border-radius:6px;padding:28px 32px 18px;width:86%;max-width:680px;box-shadow:6px 8px 0 rgba(31,78,95,.13);transition:transform .25s;}
.lt-l{margin-right:auto;}
.lt-r{margin-left:auto;box-shadow:-6px 8px 0 rgba(217,91,42,.14);}
.lt:hover{transform:translateY(-4px);}
.lt-ribbon{position:absolute;top:0;bottom:0;left:0;width:5px;border-radius:6px 0 0 6px;background:linear-gradient(180deg,var(--ink2),var(--orange));}
.lt-r .lt-ribbon{left:auto;right:0;background:linear-gradient(180deg,var(--orange),var(--ink2));}
.lt-mark{position:absolute;top:6px;left:16px;font-size:38px;line-height:1;color:rgba(31,78,95,.22);font-family:Georgia,serif;}
.lt-r .lt-mark{left:auto;right:16px;color:rgba(217,91,42,.25);}
.lt p{margin:0 0 14px;color:#4a4438;font-size:14.5px;line-height:1.9;text-align:justify;padding-left:14px;}
.lt-r p{padding-left:0;padding-right:14px;}
.lt footer{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding-top:12px;border-top:1px dashed var(--line);}
.lt footer b{color:var(--ink2);font-size:14px;letter-spacing:.5px;}
.lt-r footer b{color:var(--orange);}
.lt time{color:#9a9184;font-size:12.5px;font-variant-numeric:tabular-nums;letter-spacing:.5px;}

/* 下载条 */
.dlwrap{background:var(--paper);padding:70px 0 78px;}
.dl-card{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--ink2),var(--ink));border-radius:12px;padding:46px 52px;display:flex;align-items:center;justify-content:space-between;gap:32px;box-shadow:0 18px 36px rgba(31,78,95,.30);}
.dl-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--orange),rgba(217,91,42,.15),var(--orange));}
.dl-l b{display:block;font-size:24px;color:#fff;letter-spacing:1px;}
.dl-l p{margin:9px 0 0;color:rgba(255,255,255,.88);font-size:14.5px;}
.dl-btn{flex:0 0 auto;background:#fff;color:var(--ink2);font-weight:800;font-size:17px;letter-spacing:1px;text-decoration:none;padding:17px 44px;border-radius:11px;box-shadow:0 6px 0 #14384a;transition:.2s;}
.dl-btn:hover{transform:translateY(3px);box-shadow:0 3px 0 #14384a;}

/* 页脚 */
.ft{background:var(--mist);border-top:3px solid var(--orange);padding:40px 0 26px;}
.ft-in{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;}
.ft-links{list-style:none;display:flex;gap:22px;margin:0;padding:0;}
.ft-links a{font-size:13.5px;color:var(--tx);text-decoration:none;}
.ft-links a:hover{color:var(--orange);}
.ft-icp{text-align:center;margin-top:22px;}
.ft-icp a{font-size:12.5px;color:#9a9184;text-decoration:none;}
.ft-c{text-align:center;font-size:12.5px;color:#9a9184;margin-top:6px;}

.backtop{position:fixed;right:22px;bottom:160px;z-index:55;width:46px;height:46px;border-radius:10px;border:none;cursor:pointer;background:var(--ink);color:#fff;font-size:19px;opacity:0;visibility:hidden;transform:translateY(14px);transition:.3s;}
.backtop.show{opacity:1;visibility:visible;transform:none;}
.backtop:hover{background:var(--orange);}

.rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease;}
.rv.vis{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;}.rv{opacity:1;transform:none;transition:none;}}

@media (max-width:980px){
  .hero-in,.custom-in{grid-template-columns:1fr;gap:44px;}
  .hero-l h1{font-size:46px;}
  .feat-grid{grid-template-columns:repeat(2,1fr);}
  .vw{grid-template-columns:repeat(2,1fr);}
  .nav{position:absolute;top:66px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:8px 0;display:none;box-shadow:0 18px 30px rgba(43,41,38,.12);}
  .nav.open{display:flex;}
  .nav a{padding:13px 26px;border-bottom:none;}
  .nav a.on{background:var(--paper);}
  .burger{display:flex;}
}
@media (max-width:767px){
  [id]{scroll-margin-top:72px;}
  .hd-in{height:60px;gap:14px;}
  .nav{top:60px;}
  .hd-cta{display:none;}
  .hero{padding:46px 0 66px;}
  .hero-l h1{font-size:40px;}
  .hero-acts .btn{flex:1 1 100%;}
  .desk{padding:24px 12px 16px;}
  .stat-in{gap:26px;}
  .s-num{font-size:30px;}
  .sec{padding:58px 0;}
  .sec-h{margin-bottom:34px;}
  .sec-h h2{font-size:23px;}
  .feat-grid{grid-template-columns:1fr;}
  .flow{flex-direction:column;align-items:stretch;gap:14px;}
  .fl{flex:none;}
  .fl-arrow{transform:rotate(90deg);}
  .theme-show{grid-template-columns:1fr 1fr;}
  .shelf-grid{grid-template-columns:1fr;}
  .sh-main{max-width:100%;}
  .sh-sub{grid-template-columns:1fr 1fr;}
  .sh-sub .sh img{max-width:100%;}
  .sh-sub .sh-b,.sh-sub .sh-d{transform:translateY(0);}
  .faq-list{padding:0 16px 10px;}
  .faq-list::before{margin:0 -16px 4px;}
  .fq-b p{padding-left:2px;}
  .lt{width:100%;padding:22px 18px 14px;}
  .lt-mark{font-size:30px;}
  .dl-card{flex-direction:column;align-items:flex-start;padding:34px 26px;}
  .dl-btn{align-self:center;}
  .backtop{bottom:150px;right:16px;width:42px;height:42px;}
  .ft-in{justify-content:center;text-align:center;}
}