:root{
  --bg:#EEF0F8;--bg-deep:#E0E4F2;--panel:#F7F8FD;--panel2:#EBEEF8;--title:#1A1840;--text:#2C2A48;--muted:#5A5680;--soft:#7A76A0;--purple:#5B4BDB;--blue:#3A6BD4;--deep:#1C1A3A;--mist:#8AA4E0;--lilac:#8A6AD4;--line:rgba(58,107,212,.18);--line-strong:rgba(91,75,219,.42);--shadow:0 12px 28px rgba(28,26,58,.08);--max:1000px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{display:block;max-width:100%;object-fit:contain;object-position:center}.panel-open{overflow:hidden}
.address-bar{position:fixed;z-index:1000;top:0;left:0;right:0;height:22px;background:var(--deep);color:#F7F8FD;font-size:12px}.address-inner,.window-inner,.pill-inner,.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}.address-inner{height:22px;display:flex;align-items:center;justify-content:space-between;gap:12px}.plain-action{border:0;background:transparent;color:#F7F8FD;min-height:22px;padding:0 4px;cursor:pointer}.plain-action:focus-visible,.drawer-button:focus-visible,.close-button:focus-visible,a:focus-visible{outline:3px solid rgba(138,164,224,.72);outline-offset:2px}
.window-head{position:fixed;z-index:995;top:22px;left:0;right:0;height:54px;background:#E6E4FA;border-bottom:1px solid var(--line-strong)}.window-inner{height:54px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand-link{display:flex;align-items:center;justify-self:start;min-height:44px;min-width:44px;font-size:16px;font-weight:700;color:var(--title)}.brand-image-wrap img{height:24px;width:auto}.brand-image-wrap:has(img)+.brand-fallback{display:none}.brand-fallback{white-space:nowrap}.app-link{justify-self:center;display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border:1px solid var(--line-strong);border-radius:999px;background:rgba(247,248,253,.72);color:var(--deep);font-weight:700}.drawer-button{justify-self:end;min-height:44px;padding:0 14px;border-radius:999px;border:1px solid var(--line-strong);background:var(--deep);color:#F7F8FD;cursor:pointer}.pill-nav{position:fixed;z-index:990;top:76px;left:0;right:0;min-height:42px;background:var(--panel);border-bottom:1px solid var(--line)}.pill-inner{min-height:42px;display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;padding:4px 0}.pill{min-height:34px;display:inline-flex;align-items:center;padding:0 14px;border-radius:999px;color:var(--muted);font-size:13px;border:1px solid transparent}.pill:hover{border-color:var(--line-strong);color:var(--title)}.pill.is-active{background:var(--purple);color:#F7F8FD}
.site-main{width:min(var(--max),calc(100% - 32px));margin:0 auto;padding:146px 0 64px}.page-title{margin:0 0 12px;font-size:24px;line-height:1.3;color:var(--title)}h2{font-size:20px;line-height:1.35;color:var(--title);margin:0 0 12px}h3{font-size:16px;line-height:1.45;color:var(--title);margin:0 0 8px}p{margin:0 0 14px}.lead{font-size:16px;color:var(--muted);max-width:760px}.section{margin:0 0 26px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.pad{padding:24px}.soft-panel{background:var(--panel2)}.deep-panel{background:var(--deep);color:#F7F8FD}.deep-panel h1,.deep-panel h2,.deep-panel h3,.deep-panel p,.brand-block h2,.brand-block p{color:#F7F8FD}.eyebrow{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:999px;background:#E2E6F8;border:1px solid var(--line);color:var(--purple);font-size:13px;font-weight:700;margin-bottom:12px}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn{min-height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:11px;font-size:14px;font-weight:700;border:1px solid var(--line-strong)}.btn-primary{background:linear-gradient(135deg,#8AA4E0 0%,#5B4BDB 55%,#3A6BD4 100%);color:#F7F8FD;border-color:transparent}.btn-secondary{background:#F7F8FD;color:var(--deep)}.btn:hover{transform:translateY(-1px)}
.image-slot{display:flex;align-items:center;justify-content:center;min-height:120px;background:#ECE9FB;border:1px solid var(--line);border-radius:12px;overflow:hidden}.image-slot img{width:100%;height:100%;padding:10px}.slot-168{height:168px}.slot-176{height:176px}.slot-220{height:220px}.slot-260{height:260px}.slot-320{height:320px}.icon-slot{width:48px;height:48px;border-radius:12px;background:#E8EAF8;display:flex;align-items:center;justify-content:center}.icon-slot img{width:48px;height:48px}
.hero-window{padding:20px;display:grid;gap:20px;background:linear-gradient(180deg,#F7F8FD 0%,#E9ECF8 100%)}.hero-window .frame-line{height:12px;border-radius:999px;background:linear-gradient(90deg,var(--purple),var(--blue));width:118px}.hero-window .hero-copy{padding:6px 2px 2px}.single-story{display:grid;gap:16px}.step-stack{display:grid;gap:14px}.step-card{padding:20px}.step-card:nth-child(2){margin-left:24px}.step-card .meta{color:var(--purple);font-size:13px;font-weight:700}.tag-wrap{display:flex;gap:10px;flex-wrap:wrap}.tag{min-height:38px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--line-strong);border-radius:999px;background:#F7F8FD;color:var(--deep);font-weight:700}.tag-note{margin-top:16px}.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}.compare>.panel{padding:20px}.path-list{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:16px 0}.path-list span{min-height:38px;padding:0 14px;border-radius:10px;background:#E4E7F4;color:var(--deep);display:inline-flex;align-items:center;font-weight:700}.path-list i{font-style:normal;color:var(--purple);font-weight:700}.center-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;max-width:760px;margin:0 auto}.center-card{text-align:center;padding:22px}.product-card{max-width:760px;margin:0 auto;padding:26px;text-align:center}.product-card .product-visual{max-width:420px;margin:0 auto 18px}.product-card .icon-slot{margin:0 auto 12px}.long-copy p:last-child,.panel p:last-child{margin-bottom:0}.info-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.info-strip>div{padding:18px;border:1px solid var(--line);border-radius:12px;background:var(--panel)}.faq-mini{display:grid;gap:12px}.faq-mini details{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px}.faq-mini summary{cursor:pointer;font-weight:700;color:var(--title)}.brand-block{padding:26px;background:linear-gradient(135deg,#1C1A3A,#2B2856 56%,#314C87);border-radius:14px;box-shadow:var(--shadow)}
.page-frame .intro-frame{display:grid;grid-template-columns:.86fr 1.14fr;gap:20px;align-items:center}.page-frame .intro-frame .image-slot{min-height:210px}.page-frame .content-columns{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.page-frame .content-columns .side-note{align-self:start}
.page-stairs .step-card:nth-child(2){margin-left:34px}.page-stairs .step-card:nth-child(3){margin-left:68px}.page-tags .tag-board{padding:24px}.page-tags .tag-grid{display:flex;flex-wrap:wrap;gap:12px}.page-tags .tag-panel{margin-top:18px;display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.page-read .reading-sheet{max-width:820px;margin:0 auto;background:var(--panel);padding:30px;border-radius:14px;border:1px solid var(--line)}.page-tools .tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.page-tools .tool-item{padding:20px}.page-compare .compare{align-items:start}.page-path .route-box{padding:24px}.page-notes .note-list{display:grid;gap:12px}.page-notes .note{padding:18px;border-left:4px solid var(--purple)}.page-center .center-wrap{max-width:800px;margin:0 auto}.terms{display:grid;gap:14px}.terms section{padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.help-grid a{display:block;padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.contact-list{display:grid;gap:12px}.contact-item{padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.about-flow{display:grid;gap:18px}.about-flow .statement{padding:24px}
.site-footer{background:var(--deep);color:#EEF0F8;border-top:1px solid rgba(138,164,224,.4);font-size:13px}.footer-inner{padding:34px 0 28px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-logo img{height:24px;width:auto}.footer-brand div{display:flex;flex-direction:column}.footer-brand span{color:#C9D4F2}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:18px 0;border-top:1px solid rgba(138,164,224,.2);border-bottom:1px solid rgba(138,164,224,.2)}.footer-links div{display:grid;gap:6px}.footer-links strong{color:#fff;margin-bottom:3px}.footer-links a{color:#DDE5F8}.footer-links a:hover{color:#fff}.footer-note{margin:18px 0 8px;color:#D9DDF0}.copyright{margin:0;color:#AEB7D7}
.overlay{position:fixed;z-index:1200;inset:0;background:rgba(20,18,44,.42);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.tool-drawer{position:fixed;z-index:1210;right:24px;bottom:24px;width:360px;max-height:70vh;overflow:auto;background:var(--panel);border:1px solid var(--line-strong);border-radius:16px;box-shadow:0 20px 50px rgba(28,26,58,.24);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(16px) scale(.98);transition:.2s}.tool-drawer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.drawer-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;background:#F7F8FD;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand img{height:24px;width:auto}.close-button{min-height:40px;padding:0 12px;border:1px solid var(--line-strong);border-radius:10px;background:#F7F8FD;color:var(--deep);cursor:pointer}.drawer-groups{padding:14px}.drawer-groups section{margin-bottom:16px}.drawer-groups h2{font-size:14px;margin-bottom:8px;color:var(--purple)}.drawer-groups a{display:grid;grid-template-columns:92px 1fr;gap:10px;padding:10px 8px;border-radius:10px}.drawer-groups a:hover{background:#ECEEFA}.drawer-groups a span{font-size:12px;color:var(--muted);line-height:1.5}
.search-layer{position:fixed;z-index:1210;top:84px;left:50%;width:min(760px,calc(100% - 32px));transform:translate(-50%,-10px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}.search-card{background:#E8E6F8;color:var(--deep);border:1px solid var(--line-strong);border-radius:16px;box-shadow:0 20px 50px rgba(28,26,58,.22);padding:20px}.search-topline{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.search-topline strong{font-size:18px;color:var(--title)}.search-topline p{margin:4px 0 0;color:var(--muted)}.search-presets{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.search-presets a{min-height:40px;padding:0 14px;display:inline-flex;align-items:center;border-radius:10px;background:#F7F8FD;border:1px solid var(--line);font-weight:700}
.mobile-bottom{display:none}
@media(max-width:760px){
  .address-inner,.window-inner,.footer-inner{width:calc(100% - 32px)}.site-main{width:calc(100% - 32px);padding-top:102px;padding-bottom:84px}.pill-nav{display:none}.window-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:6px}.brand-link{min-width:0;overflow:hidden}.brand-fallback{font-size:15px;overflow:hidden;text-overflow:ellipsis}.app-link{padding:0 10px}.drawer-button{padding:0 10px}.compare,.page-frame .intro-frame,.page-frame .content-columns,.page-tags .tag-panel,.page-tools .tool-grid,.help-grid,.info-strip,.center-cards{grid-template-columns:1fr}.step-card:nth-child(2),.page-stairs .step-card:nth-child(2),.page-stairs .step-card:nth-child(3){margin-left:0}.slot-320{height:290px}.pad,.product-card,.reading-sheet{padding:20px}.footer-links{grid-template-columns:repeat(2,1fr)}.tool-drawer{right:4%;bottom:62px;width:92%;max-height:70vh}.search-layer{top:0;left:0;width:100%;height:100dvh;transform:none;background:var(--deep)}.search-layer.is-open{transform:none}.search-card{min-height:100%;border:0;border-radius:0;background:var(--deep);color:#F7F8FD;padding:24px 16px calc(76px + env(safe-area-inset-bottom))}.search-topline strong,.search-topline p{color:#F7F8FD}.search-presets a{background:#F7F8FD;color:var(--deep)}.mobile-bottom{position:fixed;z-index:900;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:#F7F8FD;border-top:1px solid var(--line-strong)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}.mobile-bottom a.is-active{background:var(--purple);color:#F7F8FD}.page-frame .intro-frame .image-slot{min-height:170px}.footer-inner{padding-bottom:78px}
}

.mt-18{margin-top:18px}.mt-16{margin-top:16px}.spaced-visual{margin:18px 0}.center-buttons{justify-content:center}.lead-centered{margin-left:auto;margin-right:auto}