:root{--bg:#f4f1ea;--bg-deep:#1f1c18;--ink:#1a1816;--muted:#6e6a62;--line:#d6d2c4;--line-dark:#3a3530;--accent:#c8462a;--accent-2:#e7b87a;--paper:#fffbf3;--paper-trans:rgba(255,251,243,.92)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:'Georgia',serif,'Microsoft YaHei',sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.bar{position:sticky;top:0;z-index:50;background:rgba(244,241,234,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:18px 6vw;display:flex;justify-content:space-between;align-items:center}.bar .mark{font-family:'Georgia',serif;font-weight:700;font-size:24px;letter-spacing:-1px;display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none}.bar .mark img{width:34px;height:34px;object-fit:cover;border-radius:50%}.bar nav{display:flex;gap:28px;font-family:'Arial',sans-serif;font-size:13px;letter-spacing:1px;text-transform:uppercase}.bar nav a{color:var(--muted)}.bar nav a:hover{color:var(--accent)}.bar .dl{background:var(--ink);color:var(--bg);padding:11px 22px;font-family:'Arial',sans-serif;font-size:13px;letter-spacing:1px;text-transform:uppercase;border-radius:0;transition:background .25s ease}.bar .dl:hover{background:var(--accent)}

/* ── Hero / 背景图 + 下载按钮 ── */
.hero{position:relative;min-height:760px;display:flex;align-items:center;justify-content:center;overflow:hidden;color:var(--paper);padding:120px 6vw 100px;text-align:center;isolation:isolate}.hero::before{content:'';position:absolute;inset:0;background-image:url('assets/qq-2.png');background-size:cover;background-position:center;background-repeat:no-repeat;z-index:-2;transform:scale(1.02)}.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,13,10,.55) 0%,rgba(15,13,10,.7) 50%,rgba(15,13,10,.85) 100%);z-index:-1}.hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto}.hero .issue{font-family:'Arial',sans-serif;font-size:12px;letter-spacing:6px;text-transform:uppercase;color:#f3c084;display:inline-block;padding:6px 16px;border:1px solid rgba(243,192,132,.5);margin-bottom:30px}.hero h1{font-size:clamp(56px,9vw,140px);line-height:.9;letter-spacing:-5px;margin:0 0 26px;font-weight:400;font-style:italic;color:#fff;text-shadow:0 4px 30px rgba(0,0,0,.35)}.hero .blurb{font-family:'Arial',sans-serif;font-size:17px;line-height:1.7;color:rgba(255,251,243,.85);max-width:620px;margin:0 auto 40px;text-shadow:0 1px 8px rgba(0,0,0,.3)}.hero .cta{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:34px}.btn{display:inline-flex;align-items:center;gap:10px;padding:18px 32px;font-family:'Arial',sans-serif;font-size:14px;letter-spacing:3px;text-transform:uppercase;font-weight:700;cursor:pointer;border:0;transition:transform .25s ease,box-shadow .25s ease,background .25s ease}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 14px 32px rgba(200,70,42,.45)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 40px rgba(200,70,42,.55);background:#b03b22}.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,251,243,.6)}.btn-ghost:hover{background:rgba(255,251,243,.12);border-color:#fff}.hero .meta-row{display:flex;justify-content:center;gap:46px;flex-wrap:wrap;font-family:'Arial',sans-serif;font-size:13px;letter-spacing:2px;color:rgba(255,251,243,.7);padding-top:34px;border-top:1px solid rgba(243,192,132,.25);margin-top:6px}.hero .meta-row b{display:block;font-size:32px;font-style:italic;font-family:'Georgia',serif;letter-spacing:-1px;color:#f3c084;line-height:1;margin-bottom:6px}

/* ── 滚动提示 ── */
.hero .scroll-hint{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);color:rgba(255,251,243,.55);font-family:'Arial',sans-serif;font-size:10px;letter-spacing:4px;text-transform:uppercase;animation:pulse 2.4s ease-in-out infinite;z-index:3}@keyframes pulse{0%,100%{opacity:.4;transform:translate(-50%,0)}50%{opacity:1;transform:translate(-50%,6px)}}

/* ── 区块通用 ── */
.wrap{max-width:1280px;margin:0 auto;padding:0 6vw}.col-title{display:flex;align-items:baseline;gap:14px;margin:110px 0 40px;border-top:1px solid var(--line);padding-top:36px}.col-title::before{content:'';width:10px;height:10px;background:var(--accent);display:inline-block;flex-shrink:0}.col-title h2{font-size:clamp(36px,5vw,58px);letter-spacing:-2px;line-height:1.05;margin:0;font-weight:400;font-style:italic;color:var(--ink)}.col-title .num{font-family:'Arial',sans-serif;font-size:11px;letter-spacing:4px;text-transform:uppercase;color:var(--muted);margin-left:auto}

/* ── 核心功能 ── */
.feat{display:grid;grid-template-columns:repeat(12,1fr);gap:30px;padding-bottom:20px}.feat article{border-right:1px solid var(--line);padding:0 30px 10px 0}.feat article:first-child{padding-left:0}.feat article:nth-child(1){grid-column:1/5}.feat article:nth-child(2){grid-column:5/9}.feat article:nth-child(3){grid-column:9/13;border-right:0;padding-right:0}.feat .idx{font-family:'Arial',sans-serif;font-size:11px;letter-spacing:4px;color:var(--accent)}.feat h3{font-size:32px;font-weight:400;font-style:italic;line-height:1.1;margin:14px 0 14px;letter-spacing:-1px}.feat p{font-size:15px;color:var(--muted);line-height:1.7}.feat .more{display:inline-block;margin-top:20px;font-family:'Arial',sans-serif;font-size:12px;letter-spacing:2px;text-transform:uppercase;border-bottom:1px solid var(--ink);padding-bottom:3px;color:var(--ink);transition:color .2s}.feat .more:hover{color:var(--accent);border-color:var(--accent)}

/* ── 使用帮助 ── */
.editor{padding:30px 0 60px;display:grid;grid-template-columns:repeat(12,1fr);gap:30px}.editor .lead{grid-column:1/4;font-family:'Arial',sans-serif;font-size:11px;letter-spacing:4px;text-transform:uppercase;color:var(--accent)}.editor ul{grid-column:4/13;list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:0}.editor li{padding:26px 0;border-bottom:1px solid var(--line);display:flex;gap:25px;align-items:flex-start}.editor li:nth-child(odd){padding-right:30px;border-right:1px solid var(--line)}.editor li b{font-family:'Georgia',serif;font-size:30px;font-style:italic;color:var(--accent);line-height:1;flex-shrink:0;width:50px}.editor li h4{font-size:19px;font-weight:400;font-style:italic;margin:0 0 8px;letter-spacing:-1px}.editor li p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}

/* ── FAQ ── */
.faq-section{padding:60px 0 100px}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line)}.faq-grid details{padding:30px 0;border-bottom:1px solid var(--line);transition:background .25s ease}.faq-grid details:nth-child(odd){padding-right:40px;border-right:1px solid var(--line)}.faq-grid summary{cursor:pointer;font-size:22px;font-style:italic;font-weight:400;list-style:none;display:flex;justify-content:space-between;align-items:center;letter-spacing:-1px;color:var(--ink)}.faq-grid summary::after{content:'+';color:var(--accent);font-size:18px;font-weight:300;font-family:'Arial',sans-serif;font-style:normal;transition:transform .35s ease}.faq-grid details[open] summary::after{transform:rotate(45deg)}.faq-grid details p{margin:14px 0 0;color:var(--muted);font-size:15px;line-height:1.8;font-family:'Arial',sans-serif}

/* ── CTA ── */
.cta-band{margin:40px 0 80px;background:var(--bg-deep);color:var(--paper);padding:80px 6vw;display:grid;grid-template-columns:1fr auto;align-items:center;gap:40px;position:relative;overflow:hidden}.cta-band::before{content:'♪';position:absolute;right:-30px;bottom:-80px;font-size:380px;color:rgba(200,70,42,.18);line-height:1;font-family:Georgia,serif;font-style:italic;pointer-events:none}.cta-band h3{font-size:clamp(34px,5vw,52px);font-style:italic;margin:0;font-weight:400;letter-spacing:-2px;line-height:1.05;position:relative;z-index:1}.cta-band a{background:var(--accent);color:white;padding:20px 32px;font-family:'Arial',sans-serif;font-size:14px;letter-spacing:3px;text-transform:uppercase;white-space:nowrap;position:relative;z-index:1;font-weight:700;box-shadow:0 12px 30px rgba(200,70,42,.45);transition:transform .25s ease,box-shadow .25s ease,background .25s ease}.cta-band a:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(200,70,42,.6);background:#b03b22}

/* ── 悬浮下载按钮 ── */
.float-dl{position:fixed;right:30px;bottom:30px;z-index:60;background:var(--accent);color:#fff;padding:16px 22px;font-family:'Arial',sans-serif;font-size:13px;letter-spacing:2px;text-transform:uppercase;font-weight:700;box-shadow:0 16px 36px rgba(200,70,42,.5);display:flex;align-items:center;gap:8px;transition:transform .25s ease,box-shadow .25s ease}.float-dl:hover{transform:translateY(-3px);box-shadow:0 22px 44px rgba(200,70,42,.6)}.float-dl .dot{width:8px;height:8px;border-radius:50%;background:#fff;animation:blink 1.4s ease-in-out infinite}@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}

footer{border-top:1px solid var(--line);padding:36px 6vw;display:flex;justify-content:space-between;font-family:'Arial',sans-serif;font-size:12px;color:var(--muted);flex-wrap:wrap;gap:14px}footer strong{color:var(--ink);font-family:'Georgia',serif;font-style:italic;font-size:18px;letter-spacing:-1px}

/* ── 入场动画 ── */
.fade-in{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}.fade-in.is-visible{opacity:1;transform:translateY(0)}.fade-in.delay-1{transition-delay:.1s}.fade-in.delay-2{transition-delay:.2s}.fade-in.delay-3{transition-delay:.3s}.fade-in.delay-4{transition-delay:.4s}.fade-in.delay-5{transition-delay:.5s}.fade-in.delay-6{transition-delay:.6s}

/* ── 响应式 ── */
@media(max-width:760px){.bar nav{display:none}.bar .dl{padding:9px 16px;font-size:11px}.hero{min-height:600px;padding:100px 7vw 80px}.hero h1{letter-spacing:-3px}.hero .meta-row{gap:24px}.col-title{margin:70px 0 30px;padding-top:24px}.feat,.editor{display:block}.feat article{padding:0 0 30px;border-right:0;border-bottom:1px solid var(--line);margin-bottom:24px}.editor ul{grid-template-columns:1fr;gap:0}.editor li:nth-child(odd){padding-right:0;border-right:0}.faq-grid{display:block}.faq-grid details{padding:25px 0;border-right:0}.cta-band{display:block;padding:50px 7vw;text-align:center}.cta-band a{display:inline-block;margin-top:24px}.cta-band::before{font-size:240px}.float-dl{padding:12px 16px;font-size:11px;right:14px;bottom:14px}}