:root{
      color-scheme:light dark;
      --paper:#FAF6EE;--surface:#FFFFFF;--surface-soft:#F5F0E7;--navy:#1E3A5F;--navy-deep:#16293F;
      --green:#2F7D4F;--green-soft:#E7F0E9;--gold:#E5A83B;--ink:#2B2B2B;--muted:#6B6560;
      --line:#E7DFD2;--risk:#C0392B;--shadow:0 12px 28px rgba(30,58,95,.08);--max:1160px;
    }
    @media(prefers-color-scheme:dark){:root{
      --paper:#141B20;--surface:#1E272D;--surface-soft:#192228;--navy:#B7D4ED;--navy-deep:#0D1A25;
      --green:#7BC49A;--green-soft:#1D3327;--gold:#E8B85C;--ink:#F5F0E7;--muted:#C7BFB5;
      --line:#3A464D;--risk:#F08C80;--shadow:0 12px 28px rgba(0,0,0,.25);
    }}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans TC",PingFang TC,"Microsoft JhengHei",sans-serif;font-size:16px;line-height:1.8}
    button,input,a{font:inherit} button{cursor:pointer} a{color:inherit;text-decoration:none}
    .shell{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
    .page{display:none}.page.active{display:block}
    .preview-nav{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--paper) 94%,transparent);backdrop-filter:blur(12px)}
    .preview-nav .shell{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .preview-label{font-size:14px;color:var(--muted)}
    .switcher{display:flex;border:1px solid var(--line);background:var(--surface-soft);padding:4px;border-radius:10px}
    .switcher button{border:0;background:transparent;color:var(--muted);font-weight:700;font-size:14px;min-height:38px;padding:7px 14px;border-radius:7px}
    .switcher button.active{background:var(--surface);color:var(--navy);box-shadow:0 2px 10px rgba(30,58,95,.09)}
    .section{padding:86px 0}.section.alt{background:var(--surface-soft)}.section.dark{background:var(--navy-deep);color:#FAF6EE}
    .section-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,390px);gap:48px;align-items:end;margin-bottom:32px}
    .section-head.compact{grid-template-columns:1fr;gap:0}.section-head p{margin:0;color:var(--muted)}
    .section-tag{margin:0 0 8px;color:var(--green);font-size:14px;font-weight:700}
    h1,h2,h3,p{overflow-wrap:anywhere}
    h1{font-size:clamp(40px,5vw,68px);line-height:1.16;letter-spacing:-.035em;color:var(--navy);margin:0}
    h2{font-size:clamp(30px,3.7vw,46px);line-height:1.3;letter-spacing:-.025em;color:var(--navy);margin:0}
    h3{font-size:19px;line-height:1.5;color:var(--navy);margin:0}
    p{margin:0}
    .btn{min-height:50px;display:inline-flex;align-items:center;justify-content:center;padding:11px 22px;border-radius:999px;border:1px solid transparent;font-weight:700;transition:transform .18s ease,background .18s ease,border-color .18s ease}
    .btn:hover,.btn:focus-visible{transform:translateY(-2px)}
    .btn.primary{background:var(--navy);color:#fff}.btn.secondary{background:var(--surface);color:var(--navy);border-color:var(--navy)}
    .btn.ghost{background:transparent;color:var(--navy);border-color:var(--line)}.btn:disabled{cursor:not-allowed;opacity:.64;transform:none}
    .text-link{border:0;background:transparent;padding:0;color:var(--navy);font-weight:700;text-align:left}.text-link:hover,.text-link:focus-visible{text-decoration:underline}
    .trust-note{font-size:14px;color:var(--muted);margin-top:14px}
    .source-strip{margin-top:34px;padding-top:14px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px 20px;color:var(--muted);font-size:12px;line-height:1.6}
    .source-strip span{display:inline-flex;gap:4px}.dark .source-strip{border-color:rgba(255,255,255,.2);color:#CDD5D9}

    .hero{padding:70px 0 76px;min-height:650px;display:flex;align-items:center}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(380px,.94fr);gap:64px;align-items:center}
    .hero .eyebrow{font-size:14px;font-weight:700;color:var(--green);margin:0 0 18px}
    .hero-copy>p:not(.eyebrow):not(.trust-note){font-size:18px;color:var(--muted);max-width:660px;margin-top:24px}
    .actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:30px}
    .visual-placeholder{margin:0;min-height:420px;position:relative;overflow:hidden;border:1px solid var(--line);background:var(--navy-deep);color:#FAF6EE;display:flex;flex-direction:column;justify-content:flex-end;padding:30px}
    .visual-placeholder:before,.visual-placeholder:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.22)}
    .visual-placeholder:before{width:62%;height:56%;right:-8%;top:10%;border-radius:50%}
    .visual-placeholder:after{width:48%;height:44%;left:-9%;top:31%;transform:rotate(9deg)}
    .visual-placeholder.green{background:#285F43}.visual-placeholder.sand{background:#D8C8AD;color:#16293F}
    .visual-mark{position:absolute;top:30px;left:30px;width:52px;height:52px;border:1px solid currentColor;display:grid;place-items:center;font-variant-numeric:tabular-nums;font-weight:700}
    .visual-placeholder figcaption{position:relative;z-index:1;max-width:390px}
    .visual-placeholder strong{display:block;font-size:18px;margin-bottom:5px}.visual-placeholder span{font-size:14px;opacity:.82}
    .visual-status{display:inline-flex;width:max-content;margin-bottom:12px;padding:3px 9px;border:1px solid currentColor;border-radius:999px;font-size:11px!important;font-weight:700}
    .photo-card{margin:0;overflow:hidden;border:1px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:var(--shadow)}
    .photo-card img{display:block;width:100%;height:100%;object-fit:cover}
    .hero-photo{height:430px}.resource-photo{min-height:100%}.case-photo{height:210px}

    .problem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .problem{min-height:260px;padding:24px;background:var(--surface);border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;align-items:flex-start;text-align:left;color:var(--ink);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
    .problem:hover,.problem:focus-visible{transform:translateY(-2px);border-color:var(--green);box-shadow:var(--shadow)}
    .problem .num{font-size:13px;font-weight:700;color:var(--gold);font-variant-numeric:tabular-nums}.problem h3{margin:24px 0 10px}.problem p{color:var(--muted);font-size:14px}.problem .arrow{margin-top:auto;padding-top:20px;color:var(--green);font-weight:700;font-size:14px}
    .soon{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:2px 8px;margin-top:8px}

    .resource-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:28px;align-items:stretch}
    .resource-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .resource{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:25px;display:flex;flex-direction:column;min-height:330px}
    .resource-index{font-size:13px;color:var(--green);font-weight:700}.resource h3{margin:24px 0 10px}.resource p{font-size:14px;color:var(--muted);margin-bottom:10px}.resource .purpose{padding-top:10px;border-top:1px solid var(--line)}.resource .text-link{margin-top:auto}
    .resource-visual{min-height:100%}

    .tool-teaser{margin-top:26px;background:var(--navy-deep);color:#FAF6EE;display:grid;grid-template-columns:1fr 360px;gap:42px;align-items:center;padding:38px;border-radius:12px}
    .tool-teaser h3{font-size:30px;color:#FAF6EE;margin:8px 0 12px}.tool-teaser p{color:#D9E0E3}.tool-label{font-size:13px;color:#9ED2B4;font-weight:700}
    .notify-form{display:grid;grid-template-columns:1fr auto;gap:10px}.notify-form input{min-width:0;min-height:50px;border-radius:999px;border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.08);color:#fff;padding:11px 18px}.notify-form input::placeholder{color:#C7D1D6}.notify-form .btn{background:#FAF6EE;color:#16293F}.notify-note{font-size:12px;color:#BFCAD0;margin-top:10px}

    .path-intro{display:grid;grid-template-columns:minmax(0,720px);gap:28px;align-items:end;margin-bottom:28px}
    .paths{display:grid;grid-template-columns:1fr 1fr;gap:18px}.path-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:30px}.path-label{font-size:13px;color:var(--green);font-weight:700}.path-card h3{font-size:27px;margin:7px 0 20px}.fact-list{list-style:none;padding:0;margin:0 0 24px}.fact-list li{padding:12px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:92px 1fr;gap:13px;font-size:14px}.fact-list strong{color:var(--muted);font-weight:600}.path-c{margin-top:18px;border-left:4px solid var(--gold);padding:18px 22px;background:var(--surface)}.path-c strong{color:var(--navy)}

    .method-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
    .method{min-height:235px;padding:26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 48%,transparent)}
    .method .digit{font-size:13px;font-weight:700;color:var(--gold)}.method h3{margin:22px 0 8px}.method p{color:var(--muted);font-size:14px}
    .trust-facts{margin-top:24px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.trust-fact{padding:18px 20px;background:var(--surface);border:1px solid var(--line)}.trust-fact strong{display:block;color:var(--navy);margin-bottom:3px}.trust-fact span{font-size:14px;color:var(--muted)}

    .case-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(330px,.75fr);gap:20px}.case-stack,.case-side{display:grid;gap:14px}.case{padding:26px;background:var(--surface);border:1px solid var(--line);border-radius:12px}.case .tag{font-size:12px;color:var(--green);font-weight:700}.case h3{margin:8px 0}.case p{font-size:14px;color:var(--muted)}
    .tools{padding:30px;background:var(--navy-deep);color:#FAF6EE;border-radius:12px}.tools .tool-label{color:#9ED2B4}.tools h3{font-size:27px;color:#FAF6EE;margin:8px 0 16px}.tools ul{list-style:none;padding:0;margin:0}.tools li{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.2);display:flex;justify-content:space-between;gap:15px}.tools small{display:block;color:#C7D1D6;margin-top:18px}

    .faq{max-width:860px}.faq-item{border-top:1px solid var(--line)}.faq-item:last-child{border-bottom:1px solid var(--line)}.faq-q{width:100%;border:0;background:transparent;color:var(--ink);padding:20px 0;display:flex;justify-content:space-between;gap:20px;text-align:left;font-weight:700}.faq-q .sign{color:var(--green);font-size:22px}.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .25s ease}.faq-item.open .faq-a{max-height:220px}.faq-a p{padding:0 0 20px}

    .newsletter{display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.85fr);gap:64px;align-items:center}.dark h2{color:#FAF6EE}.dark .section-tag{color:#9ED2B4}.dark p{color:#D9E0E3}
    .topic-pills{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:18px}.topic-pill{position:relative}.topic-pill input{position:absolute;opacity:0;pointer-events:none}.topic-pill span{display:block;padding:7px 13px;border:1px solid rgba(255,255,255,.3);border-radius:999px;font-size:14px}.topic-pill input:checked+span{background:#FAF6EE;color:#16293F;border-color:#FAF6EE}
    .consent{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:#D9E0E3;margin:14px 0}.consent input{margin-top:7px}.signup-row{display:grid;grid-template-columns:1fr auto;gap:10px}.signup-row input{min-width:0;min-height:50px;border-radius:999px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.08);color:#fff;padding:11px 18px}.signup-row input::placeholder{color:#C7D1D6}.legal-note{font-size:12px;color:#BFCAD0;margin-top:10px}

    .footer{padding:34px 0;background:#0D1A25;color:#DDE5E8}.footer .shell{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:start}.footer-title{font-weight:700;color:#FAF6EE}.contact-line{font-size:13px;color:#BFCAD0;margin-top:8px}.footer-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px 18px}.footer-links a{font-size:13px;color:#DDE5E8}.footer-links a:hover{text-decoration:underline}.footer-meta{grid-column:1/-1;padding-top:16px;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:#9FAEB5}

    /* course page */
    .course-hero{padding:76px 0 66px;border-bottom:1px solid var(--line)}.course-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:70px;align-items:center}.course-hero h1{font-size:clamp(38px,4.8vw,62px)}.course-hero .lede{font-size:18px;color:var(--muted);margin-top:20px}.course-meta{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.meta-chip{border:1px solid var(--line);border-radius:999px;padding:6px 11px;color:var(--muted);font-size:13px}.price-note{font-size:13px;color:var(--muted);margin-top:12px}.course-summary{background:var(--navy-deep);color:#FAF6EE;padding:30px;min-height:390px;display:flex;flex-direction:column}.course-summary .summary-number{font-size:64px;font-weight:700;line-height:1;color:#9ED2B4;font-variant-numeric:tabular-nums}.course-summary h3{color:#FAF6EE;margin-top:auto;font-size:26px}.course-summary p{font-size:14px;color:#D9E0E3;margin-top:10px}.course-summary .visual-status{margin-top:18px}
    .course-nav{position:sticky;top:62px;z-index:20;background:var(--paper);border-bottom:1px solid var(--line)}.course-nav .shell{display:flex;flex-wrap:wrap;gap:10px 28px}.course-nav a{padding:14px 0;color:var(--muted);font-size:14px}.course-nav a:first-child{color:var(--navy);font-weight:700;border-bottom:2px solid var(--green)}
    .course-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:64px}.outcomes{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}.outcome{padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:12px;font-weight:600}.outcome b{color:var(--green);margin-right:8px;font-variant-numeric:tabular-nums}.subsection{padding-top:54px}.fit-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}.fit{padding:24px;background:var(--green-soft);border-top:4px solid var(--green)}.fit.no{background:color-mix(in srgb,var(--risk) 7%,var(--surface));border-color:var(--risk)}.fit ul{padding-left:20px;margin-bottom:0}.fit li{margin:8px 0}
    .curriculum{counter-reset:module;margin-top:22px}.module{padding:20px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:44px 1fr;gap:14px}.module:before{counter-increment:module;content:counter(module,decimal-leading-zero);color:var(--gold);font-weight:700;font-variant-numeric:tabular-nums}.module p{font-size:14px;color:var(--muted)}
    .sidebar{align-self:start;position:sticky;top:130px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:25px}.sidebar h3{margin-bottom:14px}.sidebar dl{margin:0}.sidebar div{display:grid;grid-template-columns:84px 1fr;gap:10px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}.sidebar dt{color:var(--muted)}.sidebar dd{margin:0}.sidebar-note{margin-top:18px;font-size:13px;color:var(--muted)}
    .course-close{text-align:center;max-width:720px;margin:auto}.course-close p{color:var(--muted);margin:16px auto 18px}.course-close .text-link{font-size:16px}

    @media(max-width:980px){
      .hero-grid,.course-hero-grid{grid-template-columns:1fr 340px;gap:35px}.problem-grid{grid-template-columns:1fr 1fr}.resource-layout{grid-template-columns:1fr}.resource-photo{min-height:300px}.path-intro{grid-template-columns:1fr}.method-grid{grid-template-columns:1fr 1fr}.newsletter,.course-grid{grid-template-columns:1fr}.sidebar{position:static}.footer .shell{grid-template-columns:1fr}.footer-links{justify-content:flex-start}.footer-meta{grid-column:auto}
    }
    @media(max-width:720px){
      body{font-size:16px;line-height:1.8}.shell{width:min(100% - 32px,var(--max))}.preview-nav .shell{min-height:58px}.preview-label{display:none}.switcher{width:100%}.switcher button{flex:1}
      .section{padding:64px 0}.section-head{grid-template-columns:1fr;gap:14px;margin-bottom:24px}h1{font-size:28px;line-height:1.4;letter-spacing:-.02em}h2{font-size:22px;line-height:1.5}h3{font-size:18px;line-height:1.5}
      .hero{padding:50px 0 0;min-height:0}.hero-grid,.course-hero-grid{grid-template-columns:1fr;gap:32px}.hero-copy>p:not(.eyebrow):not(.trust-note),.course-hero .lede{font-size:16px}.actions{display:grid;grid-template-columns:1fr}.btn{width:100%}.visual-placeholder{min-height:330px;margin-inline:-16px;border-left:0;border-right:0}.hero .visual-placeholder{order:2}.photo-card{border-radius:12px}.hero-photo{height:auto;aspect-ratio:16/9;margin-inline:-16px;border-left:0;border-right:0;border-radius:0}.source-strip{display:grid;gap:4px;margin-top:24px}
      .problem-grid{grid-template-columns:1fr 1fr;gap:10px}.problem{min-height:235px;padding:18px 15px}.problem h3{margin-top:18px}.problem p{font-size:13px}.problem .arrow{font-size:13px}.resource-list{grid-template-columns:1fr}.resource{min-height:0}.resource-photo{min-height:0;aspect-ratio:16/9;margin:0}.tool-teaser{grid-template-columns:1fr;padding:26px 22px;margin-inline:-16px;border-radius:0}.tool-teaser h3{font-size:24px}.notify-form,.signup-row{grid-template-columns:1fr}.paths{grid-template-columns:1fr}.path-card{padding:24px}.fact-list li{grid-template-columns:78px 1fr}.method-grid{grid-template-columns:1fr}.method{min-height:0}.trust-facts{grid-template-columns:1fr}.case-layout{grid-template-columns:1fr}.newsletter{gap:30px}.footer-links{display:grid;grid-template-columns:1fr 1fr}.course-hero{padding:52px 0 44px}.course-summary{min-height:300px;order:-1}.course-nav{top:58px}.course-nav .shell{display:grid;grid-template-columns:1fr 1fr;gap:0 16px;padding-block:6px}.course-nav a{padding:8px 0}.outcomes,.fit-grid{grid-template-columns:1fr}.sidebar div{grid-template-columns:78px 1fr}
    }
    @media(max-width:390px){.problem-grid{grid-template-columns:1fr}.problem{min-height:190px}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
  
/* ---- production nav ---- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid #e8e2d5}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:16px;flex-wrap:wrap}
.brand{font-weight:800;font-size:19px;color:#1c1a15;text-decoration:none;letter-spacing:.02em;display:inline-flex;align-items:center;gap:10px}
.brand-logo{height:38px;width:auto;display:block}
.brand span{font-weight:400;font-size:13px;color:#8a8474;margin-left:8px;letter-spacing:.3em}
.site-nav{display:flex;gap:22px;flex-wrap:wrap}
.site-nav a{color:#4a463c;text-decoration:none;font-size:15px}
.site-nav a:hover{color:#1c1a15;text-decoration:underline}
.lang-toggle{background:transparent;border:1px solid #d8d2c2;border-radius:999px;padding:5px 14px;font-size:13px;font-weight:600;cursor:pointer;color:#4a463c;letter-spacing:.08em}
.lang-toggle:hover{border-color:#1c1a15;color:#1c1a15}
/* ---- forms ---- */
.form-msg{margin-top:10px;font-size:14px;line-height:1.7;color:#2e6b34;background:#eef6ee;border:1px solid #cfe3cf;padding:10px 14px;border-radius:8px}
.form-msg.err{color:#8c2f2f;background:#fbf0f0;border-color:#e8c9c9}
.form-msg a{color:inherit}
/* ---- doc pages ---- */
.doc-page{max-width:780px;margin:0 auto;padding:56px 0 80px}
.doc-page h1{text-align:center;margin-bottom:6px}
.doc-page .eff{text-align:center;color:#8a8474;font-size:13px;margin-bottom:40px;letter-spacing:.08em}
.doc-page h2{font-size:21px;margin:34px 0 12px}
.doc-page p,.doc-page li{font-size:15px;line-height:1.85}
.doc-page ul{padding-left:22px;margin:8px 0}
.doc-page li{margin-bottom:6px}
.lang-sw{display:flex;justify-content:center;gap:8px;margin-bottom:30px}
.lang-sw button{font-size:12px;letter-spacing:.2em;border:1px solid #d8d2c2;background:transparent;padding:6px 16px;cursor:pointer}
.lang-sw button.on{border-color:#1c1a15;font-weight:700}
.langblock{display:none}.langblock.on{display:block}
/* ---- resources page ---- */
.res-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin:32px 0}
/* ---- misc ---- */
.page{display:block !important}
img{max-width:100%;height:auto}
a.problem{display:block;color:inherit;text-decoration:none;cursor:pointer}
.footer-note{font-size:12px;color:#8a8474;margin-top:8px}
.footer-note a{color:inherit}
@media (max-width:640px){.nav-inner{padding:12px 0}.site-nav{gap:14px}}