:root{
    --leather:#3a2418;
    --leather-deep:#2a1a11;
    --leather-light:#5b3a26;
    --paper:#efe4cd;
    --paper-deep:#e2d3b6;
    --ink:#3c2f26;
    --ink-soft:#6b5a4b;
    --gold:#c9a053;
    --rust:#9c4b2f;
    --line:#c3b193;
    --shadow:0 18px 44px rgba(26,15,8,.35);
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    color:var(--ink);
    background-color:var(--leather-deep);
    background-image:
      radial-gradient(circle at 18% 12%, rgba(201,160,83,.14), transparent 45%),
      radial-gradient(circle at 82% 78%, rgba(156,75,47,.16), transparent 50%),
      repeating-linear-gradient(102deg, rgba(255,255,255,.022) 0 2px, transparent 2px 9px);
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}

  /* ============ 顶部导航 ============ */
  .topbar{
    position:sticky;top:0;z-index:60;
    background:linear-gradient(180deg,#3a2418,#2c1b12);
    border-bottom:2px solid rgba(201,160,83,.45);
    box-shadow:0 6px 22px rgba(0,0,0,.4);
  }
  .topbar-inner{
    max-width:1180px;margin:0 auto;padding:10px 18px;
    display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  }
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand img{height:34px;width:auto;border-radius:6px;filter:drop-shadow(0 2px 4px rgba(0,0,0,.5));}
  .brand-name{
    font-size:20px;font-weight:800;letter-spacing:2px;
    color:var(--gold);text-shadow:0 2px 0 rgba(0,0,0,.45);
  }
  .nav-scroll{
    display:flex;gap:4px;overflow-x:auto;flex:1;min-width:0;
    scrollbar-width:none;
  }
  .nav-scroll::-webkit-scrollbar{display:none;}
  .nav-scroll a{
    white-space:nowrap;font-size:13.5px;color:#e3d3b8;
    padding:7px 11px;border-radius:5px;border:1px solid transparent;
    transition:background .25s,color .25s,border-color .25s;
  }
  .nav-scroll a:hover{background:rgba(201,160,83,.18);color:#fff3dd;border-color:rgba(201,160,83,.45);}

  /* ============ 通用容器 / 纸张 ============ */
  .wrap{max-width:1180px;margin:0 auto;padding:0 18px;}
  .paper{
    position:relative;
    background-color:var(--paper);
    background-image:
      radial-gradient(circle at 12% 8%, rgba(150,120,70,.13), transparent 40%),
      radial-gradient(circle at 88% 92%, rgba(120,85,45,.16), transparent 42%),
      repeating-linear-gradient(0deg, rgba(120,95,60,.055) 0 1px, transparent 1px 26px);
    border-radius:8px;
    box-shadow:var(--shadow);
    border:1px solid #d8c8a8;
  }
  .paper::before{
    content:"";position:absolute;inset:7px;border:1px dashed rgba(140,110,70,.35);
    border-radius:4px;pointer-events:none;
  }
  .binder{
    position:absolute;top:0;left:0;bottom:0;width:34px;
    display:flex;flex-direction:column;justify-content:space-around;align-items:center;
    padding:14px 0;pointer-events:none;
  }
  .binder span{
    width:19px;height:19px;border-radius:50%;
    background:radial-gradient(circle at 34% 30%, #f0e3c6, #a9926b 65%, #7d6743);
    box-shadow:inset 0 2px 3px rgba(255,255,255,.7), 0 2px 4px rgba(60,40,20,.45);
  }
  section{padding:46px 0;}
  .sec-head{margin-bottom:24px;}
  .sec-head h2{
    font-size:clamp(21px,3vw,29px);letter-spacing:1px;color:#4a2f1c;
    display:inline-block;position:relative;padding-bottom:8px;
  }
  .sec-head h2::after{
    content:"";position:absolute;left:0;bottom:0;width:64%;height:4px;border-radius:2px;
    background:linear-gradient(90deg,var(--rust),rgba(156,75,47,0));
  }
  .sec-head p{font-size:14px;color:var(--ink-soft);margin-top:8px;max-width:720px;}
  .hand{
    font-family:"Kaiti SC","STKaiti","KaiTi",cursive;
    color:#8a4a2c;font-size:14.5px;transform:rotate(-1.2deg);display:inline-block;
  }

  /* ============ 首屏 ============ */
  .hero{padding:40px 0 54px;}
  .hero-grid{
    display:grid;grid-template-columns:1fr;gap:26px;
    padding:34px 26px 30px 46px;
  }
  .hero-title{
    font-size:clamp(26px,4.4vw,42px);line-height:1.3;color:#3f2617;
    letter-spacing:1px;font-weight:800;
  }
  .hero-title em{
    font-style:normal;color:var(--rust);
    background:linear-gradient(180deg,transparent 62%,rgba(201,160,83,.55) 62%);
    padding:0 2px;
  }
  .hero-lead{font-size:15.5px;color:#4d3b2c;margin-top:16px;max-width:640px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px;}
  .hero-tags span{
    font-size:13px;padding:5px 13px;border-radius:20px;
    background:rgba(156,75,47,.1);color:#7d3f24;border:1px solid rgba(156,75,47,.28);
  }

  /* 下载按钮 */
  .dl-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
  .btn-dl{
    display:inline-flex;align-items:center;gap:10px;
    padding:14px 26px;border-radius:8px;font-size:16px;font-weight:700;
    letter-spacing:1px;cursor:pointer;border:none;
    transition:transform .2s,box-shadow .2s,filter .2s;
  }
  .btn-android{
    background:linear-gradient(160deg,#4d3121,#2f1d12);
    color:#f6e7c8;border:1px solid #c9a053;
    box-shadow:0 8px 20px rgba(35,20,10,.45);
  }
  .btn-ios{
    background:linear-gradient(160deg,#efe0be,#dcc79d);
    color:#4a3019;border:1px solid #b99a63;
    box-shadow:0 8px 20px rgba(60,40,18,.3);
  }
  .btn-dl:hover{transform:translateY(-3px);filter:brightness(1.06);}
  .btn-dl i{font-style:normal;font-size:20px;}
  .dl-note{font-size:13px;color:var(--ink-soft);margin-top:14px;}

  /* 首屏照片墙 */
  .hero-photos{
    display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
    align-content:start;
  }
  .hero-photos figure{
    background:#fbf5e8;padding:6px 6px 26px;border-radius:3px;
    box-shadow:0 8px 18px rgba(50,30,15,.3);
    transition:transform .3s;
  }
  .hero-photos img{aspect-ratio:3/4;object-fit:cover;border-radius:2px;}
  .hero-photos figure:nth-child(1){transform:rotate(-2.2deg);}
  .hero-photos figure:nth-child(2){transform:rotate(1.6deg) translateY(14px);}
  .hero-photos figure:nth-child(3){transform:rotate(-1deg) translateY(-6px);}
  .hero-photos figure:hover{transform:rotate(0) translateY(-4px) scale(1.02);}

  /* ============ 卡片网格 ============ */
  .grid-3{display:grid;grid-template-columns:1fr;gap:20px;}
  .card{
    background:#f7efdd;border:1px solid var(--line);border-radius:6px;
    overflow:hidden;box-shadow:0 8px 20px rgba(60,40,20,.16);
    display:flex;flex-direction:column;transition:transform .28s,box-shadow .28s;
  }
  .card:hover{transform:translateY(-5px);box-shadow:0 16px 32px rgba(50,30,15,.28);}
  .card-img{width:100%;aspect-ratio:3/4;object-fit:cover;}
  .card-body{padding:14px 15px 17px;}
  .card-body h3{font-size:17px;color:#4a2f1b;margin-bottom:7px;letter-spacing:.5px;}
  .card-body p{font-size:13.5px;color:#5d4a3a;line-height:1.7;}
  .card-meta{
    display:flex;gap:8px;flex-wrap:wrap;margin-top:11px;
  }
  .card-meta em{
    font-style:normal;font-size:12px;padding:2px 9px;border-radius:3px;
    background:rgba(201,160,83,.22);color:#7d5220;border:1px solid rgba(180,140,70,.35);
  }

  /* ============ 横向滚动截图墙 ============ */
  .rail{
    display:flex;gap:16px;overflow-x:auto;padding:6px 4px 20px;
    scroll-snap-type:x mandatory;
  }
  .rail::-webkit-scrollbar{height:8px;}
  .rail::-webkit-scrollbar-thumb{background:#a58a5f;border-radius:4px;}
  .rail figure{
    flex:0 0 auto;width:186px;scroll-snap-align:start;
    background:#fbf5e8;padding:7px 7px 24px;border-radius:3px;
    box-shadow:0 10px 22px rgba(50,30,15,.3);position:relative;
  }
  .rail figure img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:2px;}
  .rail figure figcaption{
    font-family:"Kaiti SC","STKaiti","KaiTi",cursive;
    font-size:13px;color:#7c4a2a;position:absolute;left:10px;bottom:4px;
  }

  /* ============ 图文交错 ============ */
  .split{
    display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
    padding:26px 26px 26px 46px;
  }
  .split img{border-radius:5px;box-shadow:0 12px 26px rgba(50,30,15,.3);width:100%;}
  .split-text h3{font-size:19px;color:#4a2f1b;margin-bottom:10px;}
  .split-text p{font-size:14.5px;color:#54432f;margin-bottom:10px;}
  .checklist{list-style:none;margin-top:12px;}
  .checklist li{
    font-size:14px;color:#5a4735;padding-left:22px;position:relative;margin-bottom:8px;
  }
  .checklist li::before{
    content:"✓";position:absolute;left:0;top:0;color:var(--rust);font-weight:800;
  }

  /* ============ 排行榜 ============ */
  .rank-list{list-style:none;display:grid;gap:12px;}
  .rank-item{
    display:flex;align-items:center;gap:14px;
    background:#f7efdd;border:1px solid var(--line);border-radius:6px;
    padding:12px 14px;box-shadow:0 5px 14px rgba(60,40,20,.13);
    transition:transform .25s;
  }
  .rank-item:hover{transform:translateX(5px);}
  .rank-no{
    flex:0 0 auto;width:36px;height:36px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    font-weight:800;font-size:16px;color:#fbf3df;
    background:linear-gradient(150deg,#8a4a2c,#5c2f1a);
    box-shadow:inset 0 2px 3px rgba(255,255,255,.25);
  }
  .rank-item:first-child .rank-no{background:linear-gradient(150deg,#c9a053,#9a7127);}
  .rank-item:nth-child(2) .rank-no{background:linear-gradient(150deg,#b08c9c,#7f5e6d);}
  .rank-thumb{width:52px;height:70px;object-fit:cover;border-radius:3px;flex:0 0 auto;}
  .rank-info{min-width:0;}
  .rank-info strong{display:block;font-size:15.5px;color:#442c19;}
  .rank-info span{font-size:13px;color:#6d5a48;}

  /* ============ 评论 ============ */
  .comment-wrap{position:relative;overflow:hidden;padding:24px 26px 30px 46px;}
  .comment-track{display:grid;gap:14px;}
  .comment{
    background:#fbf4e5;border:1px solid #dccbaa;border-radius:6px;
    padding:14px 16px;box-shadow:0 6px 16px rgba(60,40,20,.12);
    transition:transform .45s ease, box-shadow .45s ease;
  }
  .comment:hover{transform:translateY(-4px) rotate(-.35deg);box-shadow:0 14px 26px rgba(50,30,15,.22);}
  .comment-head{display:flex;align-items:center;gap:10px;margin-bottom:7px;}
  .avatar{
    width:32px;height:32px;border-radius:50%;flex:0 0 auto;
    display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:700;color:#faf3e3;
    background:linear-gradient(140deg,#8a5a3a,#5d3620);
  }
  .comment-head b{font-size:14px;color:#4a3120;}
  .comment-head i{font-style:normal;font-size:12px;color:#9a8368;margin-left:auto;}
  .comment p{font-size:14px;color:#54422f;}
  .stars{color:#c9a053;font-size:13px;letter-spacing:2px;}

  /* ============ 问答 ============ */
  .faq{display:grid;gap:12px;}
  .faq details{
    background:#f7efdd;border:1px solid var(--line);border-radius:6px;
    padding:14px 16px;box-shadow:0 5px 14px rgba(60,40,20,.12);
  }
  .faq summary{
    cursor:pointer;font-size:15px;font-weight:700;color:#4a2f1b;
    list-style:none;position:relative;padding-right:24px;
  }
  .faq summary::-webkit-details-marker{display:none;}
  .faq summary::after{
    content:"+";position:absolute;right:0;top:-2px;font-size:20px;color:var(--rust);
    transition:transform .25s;
  }
  .faq details[open] summary::after{transform:rotate(45deg);}
  .faq p{font-size:14px;color:#5a4735;margin-top:10px;line-height:1.8;}

  /* ============ 教程步骤 ============ */
  .steps{display:grid;grid-template-columns:1fr;gap:16px;counter-reset:step;}
  .step{
    background:#f7efdd;border:1px solid var(--line);border-left:5px solid var(--rust);
    border-radius:5px;padding:16px 18px;box-shadow:0 5px 14px rgba(60,40,20,.12);
    position:relative;counter-increment:step;
  }
  .step::before{
    content:counter(step);position:absolute;right:16px;top:10px;
    font-size:34px;font-weight:800;color:rgba(156,75,47,.14);line-height:1;
  }
  .step h3{font-size:16px;color:#4a2f1b;margin-bottom:7px;}
  .step p{font-size:14px;color:#5a4735;}

  /* ============ 底部 ============ */
  .page-foot{
    background:linear-gradient(180deg,#2c1b12,#1d120c);
    border-top:2px solid rgba(201,160,83,.35);
    padding:34px 0 26px;margin-top:20px;
  }
  .foot-inner{max-width:1180px;margin:0 auto;padding:0 18px;text-align:center;}
  .foot-links{
    display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px;
    margin-bottom:18px;
  }
  .foot-links a{
    font-size:12.5px;color:#a68f73;transition:color .2s;
  }
  .foot-links a:hover{color:#d8bb87;}
  .foot-copy{font-size:12px;color:#8a7460;line-height:1.9;}
  .foot-copy a{color:#a68f73;border-bottom:1px dashed rgba(166,143,115,.5);}
  .foot-copy a:hover{color:#d8bb87;}
  .foot-time{font-size:12px;color:#7e6a57;margin-top:6px;}
  .foot-time time{color:#8a7460;}

  /* ============ 弹窗 ============ */
  .modal-mask{
    position:fixed;inset:0;z-index:200;display:none;
    background:rgba(20,10,5,.72);align-items:center;justify-content:center;padding:20px;
  }
  .modal-mask.show{display:flex;}
  .modal-box{
    width:100%;max-width:420px;background:var(--paper);
    border:2px solid var(--gold);border-radius:8px;padding:24px 22px;
    box-shadow:0 24px 60px rgba(0,0,0,.6);text-align:center;
  }
  .modal-box h3{font-size:16px;color:#7d3f24;margin-bottom:14px;line-height:1.6;}
  .modal-url{
    display:block;width:100%;padding:11px 12px;border-radius:5px;
    border:1px dashed #b99a63;background:#fbf4e5;color:#4a3120;
    font-size:13px;word-break:break-all;margin-bottom:14px;text-align:left;
  }
  .modal-actions{display:flex;gap:10px;}
  .modal-actions button{
    flex:1;padding:11px;border-radius:6px;font-size:14px;font-weight:700;
    cursor:pointer;border:1px solid transparent;transition:filter .2s;
  }
  .modal-actions button:hover{filter:brightness(1.07);}
  .btn-copy{background:linear-gradient(160deg,#8a4a2c,#5c2f1a);color:#f7ecd6;border-color:#a9683f;}
  .btn-close{background:#e4d5b8;color:#5a4028;border-color:#bfa87f;}

  /* ============ 断点 ============ */
  @media (min-width:768px){
    .hero-grid{grid-template-columns:1.15fr .85fr;gap:34px;align-items:center;}
    .grid-3{grid-template-columns:repeat(2,1fr);}
    .split{grid-template-columns:1fr 1fr;gap:34px;}
    .split.reverse .split-text{order:1;}
    .split.reverse img{order:2;}
    .steps{grid-template-columns:repeat(2,1fr);}
    .rank-list{grid-template-columns:repeat(2,1fr);}
    .comment-track{grid-template-columns:repeat(2,1fr);}
  }
  @media (min-width:1024px){
    .grid-3{grid-template-columns:repeat(4,1fr);}
    .hero-photos{grid-template-columns:repeat(3,1fr);}
    .steps{grid-template-columns:repeat(4,1fr);}
    section{padding:58px 0;}
    .comment-track{grid-template-columns:repeat(3,1fr);}
  }