:root{--bg:#1B1410;--bg2:#241c15;--card:#2b221a;--gold:#C8A96E;--gold2:#D9B877;--text:#F6F1E8;--muted:#A99E8A;--line:#4a3a2a;--ok:#7cb88a;--light:#F6F1E8;--dark:#1B1410;
--paper:#F2EBDD;--paper2:#FBF7EE;--ink:#2A211B;--ink2:#5A4C3E;--jade:#6F947D;--jade2:#4F725E;--gold3:#8A6D3B;--line2:#E2D5BF}
*{margin:0;padding:0;box-sizing:border-box}
body{background:var(--bg);color:var(--text);font-family:-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.7;font-size:17px;overflow-wrap:break-word}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
header.site{background:var(--bg2);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;flex-wrap:wrap;gap:8px}
.logo{font-family:ui-serif,"Iowan Old Style","Palatino Linotype","Book Antiqua",Georgia,serif;font-size:1.25rem;color:var(--gold2);text-decoration:none;letter-spacing:.02em}
.logo small{display:block;font-size:.62rem;color:var(--muted);letter-spacing:.14em;text-transform:uppercase}
nav.site a{color:var(--text);text-decoration:none;font-size:.9rem;margin-left:18px}
nav.site a:hover{color:var(--gold2)}
nav.site a.active{color:var(--jade)}
.lang-select{margin-left:14px;background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:6px;padding:5px 8px;font-size:.82rem}
h1,h2,h3{font-family:ui-serif,"Iowan Old Style","Palatino Linotype","Book Antiqua",Georgia,serif}
h1{font-weight:400;font-size:2.2rem;color:var(--gold2);margin:40px 0 12px;line-height:1.25}
h2{font-weight:400;font-size:1.5rem;color:var(--gold);margin:36px 0 12px}
h3{font-weight:400;font-size:1.15rem;color:var(--gold2);margin:24px 0 8px}
p{margin:0 0 14px}
.lead{color:var(--muted);font-size:1.05rem;margin-bottom:24px}
a{color:var(--gold2)}
.muted{color:var(--muted);font-size:.9rem}
.btn{display:inline-block;background:var(--gold);color:var(--dark);font-weight:700;padding:13px 26px;border-radius:6px;text-decoration:none;font-size:.95rem;margin:6px 8px 6px 0}
.btn:hover{background:var(--gold2)}
.btn-ghost{background:transparent;border:1px solid var(--gold);color:var(--gold)}
.btn-ghost:hover{background:rgba(200,169,110,.12)}
.hero{padding:64px 0 40px;text-align:center;position:relative;overflow:hidden}
.hero>*{position:relative;z-index:1}
.hero .huan{position:absolute;right:-110px;top:-160px;width:360px;height:360px;opacity:.04;z-index:0;pointer-events:none}
.hero .huan svg{width:100%;height:100%}
.hero .eyebrow{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:5px 14px;font-size:.74rem;color:var(--muted);letter-spacing:.1em;text-transform:uppercase;margin-bottom:20px}
.hero h1{font-size:2.6rem;margin:0 auto 14px;max-width:820px}
.hero-result{color:#D9CFBD;font-size:1.06rem;font-weight:500;max-width:620px;margin:0 auto 22px;line-height:1.6}
.hero p{max-width:640px;margin:0 auto 8px;color:var(--muted)}
.hero-trust{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin:16px 0 0;font-size:.85rem;color:var(--muted)}
.hero-trust span{display:inline-flex;align-items:center;gap:6px}
.hero-trust .tick{color:var(--jade);font-weight:700}
.hero-sub{margin:0 auto;max-width:640px;text-align:center}
.hero-sub p{font-size:.9rem;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(300px,100%),1fr));gap:20px;margin:30px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:26px 22px;display:flex;flex-direction:column;min-width:0}
.card h3{font-size:1.2rem;margin:0 0 6px}
.card .price{color:var(--gold2);font-weight:600;font-size:1.15rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.9rem;flex-grow:1;margin-bottom:14px}
.card .btn{align-self:flex-start}
.card .best{display:inline-block;align-self:flex-start;width:fit-content;font-size:.66rem;letter-spacing:.09em;text-transform:uppercase;color:var(--jade);border:1px solid var(--jade);border-radius:999px;padding:2px 9px;margin:0 0 10px}
.card-points{list-style:none;margin:0 0 14px;padding:0}
.card-points li{position:relative;padding-left:20px;margin-bottom:6px;font-size:.86rem;color:var(--muted)}
.card-points li::before{content:'\2713';position:absolute;left:0;top:0;color:var(--jade);font-weight:700}
.card .flag{display:inline-block;align-self:flex-start;width:fit-content;font-size:.64rem;letter-spacing:.09em;text-transform:uppercase;color:var(--gold2);border:1px solid var(--gold);border-radius:999px;padding:2px 9px;margin:0 0 8px}
.card.featured{border-color:var(--gold);transform:translateY(-6px)}
.cards .card:not(.featured) .btn{background:transparent;border:1px solid var(--gold);color:var(--gold)}
.cards .card:not(.featured) .btn:hover{background:rgba(200,169,110,.12)}
.svc-ico{width:54px;height:34px;margin-bottom:10px;display:block}
.delivery{color:var(--jade);font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px}
.anchor-prices{font-size:.82rem;color:var(--muted);margin-top:6px}
.trust{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:30px 0}
.trust div{background:var(--bg2);border-left:3px solid var(--gold);padding:16px 18px;border-radius:6px;min-width:0}
.trust h4{color:var(--gold2);font-weight:600;font-size:.98rem;margin-bottom:4px}
.trust p{color:var(--muted);font-size:.85rem;margin:0}
.blog-list{list-style:none}
.blog-list li{border-bottom:1px solid var(--line);padding:18px 0}
.blog-list a{font-size:1.1rem;text-decoration:none;color:var(--gold2)}
.blog-list a:hover{text-decoration:underline}
.blog-list .meta{color:var(--muted);font-size:.82rem}
article.post{padding-bottom:40px}
article.post h2{margin-top:32px}
article.post h3{margin-top:24px}
article.post ul,article.post ol{margin:0 0 14px 24px}
article.post li{margin-bottom:6px}
.faq details{background:var(--bg2);border:1px solid var(--line);border-radius:6px;padding:14px 18px;margin-bottom:10px}
.faq details[open]{border-color:var(--jade)}
.faq summary{cursor:pointer;color:var(--gold2);font-weight:600;font-size:.95rem}
.faq p{color:var(--muted);font-size:.88rem;margin-top:8px}
footer.site{background:var(--bg2);border-top:1px solid var(--line);padding:40px 0 30px;margin-top:60px}
footer.site .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px}
footer.site h4{color:var(--gold);font-weight:400;font-size:.95rem;margin-bottom:10px}
footer.site a{display:block;color:var(--muted);font-size:.85rem;text-decoration:none;margin-bottom:6px}
footer.site a:hover{color:var(--gold2)}
footer.site .bottom{border-top:1px solid var(--line);margin-top:26px;padding-top:18px;color:var(--muted);font-size:.78rem}
.disclaimer{color:var(--muted);font-size:.8rem;font-style:italic;max-width:760px;margin:18px auto 0;text-align:center}
.lang-banner{position:fixed;bottom:0;left:0;right:0;z-index:99;background:var(--bg2);border-top:1px solid var(--gold);padding:12px 20px;display:none;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap}
.lang-banner.show{display:flex}
.lang-banner p{font-size:.9rem;color:var(--text);margin:0}
.lang-banner .btn{padding:8px 16px;font-size:.85rem;margin:0}
.lang-banner .btn-ghost{padding:8px 16px;font-size:.85rem;margin:0}
.skip{position:absolute;left:-9999px;top:0;background:var(--gold2);color:var(--dark);padding:8px 16px;border-radius:0 0 8px 0;z-index:200;font-size:.85rem;text-decoration:none}
.skip:focus{left:0}
a:focus-visible,button:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--gold2);outline-offset:2px}
html{scroll-padding-top:96px}
.nav-toggle{display:none;background:none;border:1px solid var(--line);color:var(--gold2);font-size:1.3rem;line-height:1;padding:6px 12px;border-radius:6px;cursor:pointer}
/* How It Works：时间线（无卡片套卡片） */
.timeline{list-style:none;margin:26px 0 0;padding:0}
.timeline li{display:flex;gap:16px;align-items:flex-start;position:relative;padding:0 0 28px}
.timeline li:last-child{padding-bottom:0}
.timeline li:not(:last-child)::before{content:'';position:absolute;left:15px;top:40px;bottom:4px;width:1px;background:var(--line2)}
.stamp{flex:0 0 32px;width:32px;height:32px;border:1px solid var(--gold3);color:var(--gold3);background:var(--paper2);display:inline-flex;align-items:center;justify-content:center;font-family:Georgia,serif;font-size:.95rem}
.timeline h3{margin:3px 0 4px;font-size:1.08rem}
.timeline p{margin:0;font-size:.9rem}
.sample-wrap{text-align:center;margin:28px 0}
.sample-img{display:block;max-width:100%;height:auto;margin:0 auto;border-radius:8px;border:1px solid var(--line);box-shadow:0 12px 34px rgba(0,0,0,.4)}
.sample-wrap .muted{margin-top:10px;font-size:.82rem}
.secure-note{color:var(--muted);font-size:.83rem;margin:8px 0 0}
.secure-note .tick{color:var(--jade);font-weight:700}
.excerpt{background:var(--bg2);border:1px solid var(--line);border-left:3px solid var(--jade);border-radius:6px;padding:20px 22px;margin:24px 0;text-align:left}
.excerpt-tag{color:var(--jade);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px;font-weight:600}
.excerpt-row{margin-bottom:14px;font-size:.92rem;color:var(--muted)}
.excerpt-row b{color:var(--gold2);font-weight:600;display:block;margin-bottom:2px}
.excerpt .muted{font-size:.8rem}
.cta-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:22px 0 6px}
.cta-row .btn{margin:0}
/* 深色普通区块（与纸色区交替，减少连续大卡片） */
.plain-section{margin:36px 0;padding-top:28px;border-top:1px solid var(--line)}
/* 宣纸浅色内容区 */
.paper-section{background:var(--paper);color:var(--ink);border-radius:8px;padding:34px 30px;margin:28px 0}
.paper-section h1,.paper-section h2{color:var(--gold3)}
.paper-section h3{color:var(--ink)}
.paper-section p,.paper-section li{color:var(--ink2)}
.paper-section .lead{color:var(--ink2)}
.paper-section a{color:var(--jade2)}
.paper-section a:hover{color:var(--ink)}
.paper-section .muted{color:#6B5B4B}
.paper-section .card{background:var(--paper2);border-color:var(--line2)}
.paper-section .card h3{color:var(--ink)}
.paper-section .card p{color:var(--ink2)}
.paper-section .trust div{background:var(--paper2);border-left-color:var(--jade)}
.paper-section .trust h4{color:var(--ink)}
.paper-section .trust p{color:var(--ink2)}
.paper-section .faq details{background:var(--paper2);border-color:var(--line2)}
.paper-section .faq summary{color:var(--gold3)}
.paper-section .faq p{color:var(--ink2)}
.paper-section .anchor-prices{color:#6B5B4B}
.paper-section .best{color:var(--jade2);border-color:var(--jade2)}
.paper-section .btn{background:var(--gold);color:var(--dark)}
.paper-section .btn:hover{background:var(--gold2)}
.paper-section .btn-ghost{background:transparent;border-color:var(--jade2);color:var(--jade2)}
.paper-section .btn-ghost:hover{background:rgba(79,114,94,.12);border-color:var(--ink);color:var(--ink)}
.paper-section .btn-ghost:focus-visible{outline:2px solid var(--jade2);outline-offset:2px}
.paper-section .sample-img{border-color:var(--line2)}
.paper-section .delivery{color:var(--jade2)}
.paper-section .excerpt{background:var(--paper2);border-color:var(--line2)}
.paper-section .excerpt-row{color:var(--ink2)}
.paper-section .excerpt-row b{color:var(--ink)}
.paper-section .excerpt-tag{color:var(--jade2)}
/* About 两栏 */
.about-body{max-width:720px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start;margin:26px 0}
.about-grid>*{min-width:0}
.about-grid .lead{margin-bottom:14px}
.about-media .sample-img{width:100%}
@media(max-width:900px){
.trust{grid-template-columns:1fr}
}
@media(max-width:768px){
.hero h1{font-size:2rem}
.hero{padding:48px 0 32px}
.nav-toggle{display:block}
nav.site{display:none;width:100%;flex-direction:column;gap:2px;padding-top:8px}
nav.site.open{display:flex}
nav.site a{margin:0;padding:9px 0;border-bottom:1px solid var(--line);font-size:.95rem}
.lang-select{margin:10px 0 0;width:100%}
.paper-section{padding:24px 18px}
.about-grid{grid-template-columns:1fr}
.hero .huan{display:none}
}
@media(min-width:769px){
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.timeline li{flex-direction:column;gap:12px}
.timeline li::before{display:none}
.timeline li:not(:last-child)::after{content:'';position:absolute;top:15px;right:-14px;width:27px;height:1px;background:var(--line2)}
.timeline p{margin:0}
}