:root{--p:#0f766e;--a:#e5a50a;--paper:#edf7f5;--ink:#073b37;--card:#fff;--muted:#5b6470;--line:color-mix(in srgb,var(--p) 18%,transparent);--r:14px;--shadow:0 16px 45px color-mix(in srgb, #0f766e 14%, transparent);font-family:"Noto Serif TC","PingFang TC",serif;color:var(--ink);background:var(--paper)}html[data-mode=dark]{--paper:#073b37;--ink:#f6f3ed;--card:color-mix(in srgb,#073b37 84%,#fff);--muted:#c3c7ce;--line:#ffffff24}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);line-height:1.75}a{color:var(--p);text-decoration:none}html[data-mode=dark] a{color:var(--a)}a:focus-visible,button:focus-visible{outline:3px solid var(--a);outline-offset:3px}.top{position:sticky;top:0;z-index:20;display:flex;gap:24px;align-items:center;justify-content:space-between;padding:14px max(20px,calc((100% - 1360px)/2));background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.brand{font-weight:900;font-size:20px;color:var(--ink)}.top nav{display:flex;gap:18px;align-items:center}.top button{border:1px solid var(--line);background:var(--card);color:var(--ink);padding:8px 12px;border-radius:999px}.page{max-width:1360px;margin:auto;padding:30px 20px}.grid{display:grid;grid-template-columns:230px minmax(0,1fr) 280px;gap:24px}.rail{position:sticky;top:90px;align-self:start}.panel,.card,.article article{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}.panel{padding:18px;margin-bottom:18px}.panel h2{font-size:15px;text-transform:uppercase;letter-spacing:.08em}.panel a{display:block;padding:7px 0;border-bottom:1px solid var(--line)}.hero-home{padding:34px;min-height:430px;display:grid;align-content:end;background:linear-gradient(135deg,color-mix(in srgb,var(--p) 93%,#000),color-mix(in srgb,var(--p) 35%,var(--ink)));color:#fff;border-radius:var(--r);position:relative;overflow:hidden}.hero-home:after{content:"";position:absolute;width:320px;height:320px;border:42px solid color-mix(in srgb,var(--a) 55%,transparent);border-radius:50%;right:-90px;top:-110px;transform:rotate(22deg)}.hero-home>*{position:relative;z-index:1}.hero-home h1{font-size:clamp(32px,5vw,66px);line-height:1.1;margin:.25em 0}.eyebrow{color:var(--a);font-weight:900;letter-spacing:.08em}.feed,.card-grid{display:grid;gap:18px;margin-top:22px}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.card{overflow:hidden}.card img{width:100%;aspect-ratio:16/9;object-fit:cover}.card-body{padding:18px}.card h2,.card h3{line-height:1.3;margin:.35em 0}.card p{color:var(--muted)}.tag{display:inline-block;padding:3px 9px;border-radius:999px;background:color-mix(in srgb,var(--a) 22%,transparent);font-size:13px;font-weight:800}.progress{height:8px;border-radius:99px;background:var(--line);overflow:hidden}.progress span{display:block;height:100%;background:var(--a)}.article{max-width:960px;margin:auto}.article article{padding:clamp(22px,5vw,64px)}.crumb{margin-bottom:20px}.article-head h1{font-size:clamp(32px,5vw,58px);line-height:1.18;margin:.25em 0}.dek{font-size:20px;color:var(--muted)}.meta{display:flex;gap:14px;flex-wrap:wrap;font-size:14px}.hero,.wave-focus img{width:100%;height:auto;margin:28px 0;border-radius:calc(var(--r)*.75)}figure{margin:28px 0}figcaption{color:var(--muted);font-size:14px}.answer,.note,.wave-focus{padding:22px;border-left:5px solid var(--a);background:color-mix(in srgb,var(--a) 12%,var(--card));margin:24px 0}.toc{display:grid;gap:8px;padding:20px;border:1px solid var(--line);border-radius:var(--r)}h2{margin-top:1.8em;line-height:1.25}h3{line-height:1.3}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;min-width:620px}th,td{padding:12px;text-align:left;border:1px solid var(--line);vertical-align:top}blockquote{margin:24px 0;padding:18px 22px;background:color-mix(in srgb,var(--p) 8%,var(--card));border-left:5px solid var(--p)}.mistakes{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mistakes span{padding:10px;border:1px solid var(--line);border-radius:var(--r)}details{border-bottom:1px solid var(--line);padding:14px 0}summary{font-weight:800;cursor:pointer}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.related{padding:14px;border:1px solid var(--line);border-radius:var(--r)}footer{max-width:1360px;margin:40px auto 0;padding:30px 20px;border-top:1px solid var(--line)}footer nav{display:flex;gap:18px}.ad[hidden]{display:none}.mobile-tabs{display:none}@media(max-width:1050px){.grid{grid-template-columns:190px minmax(0,1fr)}.right{display:none}}@media(max-width:760px){.top{position:static;display:block}.top nav{overflow-x:auto;margin-top:10px}.top nav a{white-space:nowrap}.grid{display:block}.left{display:none}.page{padding:14px}.hero-home{min-height:350px;padding:24px}.card-grid{grid-template-columns:1fr}.article article{padding:22px}.mistakes{grid-template-columns:repeat(2,1fr)}.related-grid{grid-template-columns:1fr}.meta{display:grid;gap:4px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
/* Intercept CTA wave 5: richer reference-inspired content and interaction. */
.reg-cta{--cta-gold:#ffd642;--cta-gold-hi:#fff3a2;--cta-night:#070a12;--mx:18%;--my:12%;position:relative;isolation:isolate;overflow:hidden;margin:28px 0;padding:clamp(58px,7vw,78px) clamp(24px,4vw,44px) clamp(28px,4vw,44px);border:1px solid color-mix(in srgb,var(--cta-gold) 56%,transparent);border-radius:max(20px,var(--r));background:radial-gradient(circle at var(--mx) var(--my),color-mix(in srgb,var(--p) 68%,transparent),transparent 36%),linear-gradient(135deg,#101a2e 0%,var(--cta-night) 56%,#1d1407 100%);color:#fffaf0;box-shadow:0 28px 80px rgba(0,0,0,.34);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.75,.2,1),background-position .3s ease}
.reg-cta:before{content:"";position:absolute;z-index:-1;inset:-2px;border-radius:inherit;background:conic-gradient(from 180deg at 50% 50%,transparent 0 28%,rgba(255,214,66,.28) 34%,transparent 42% 74%,rgba(120,171,255,.2) 81%,transparent 88%);filter:blur(18px);opacity:.72;animation:regCtaAura 9s linear infinite}
.reg-cta[data-cta-motion="pending"]{opacity:0;transform:translateY(26px) scale(.985)}
.reg-cta.reg-cta--seen{opacity:1;transform:translateY(0) scale(1)}
.reg-cta--hero{display:grid;grid-template-columns:minmax(0,1fr);align-items:center;gap:24px}
.reg-cta--end{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:28px}
.reg-cta__ticker{position:absolute;inset:0 0 auto;height:38px;overflow:hidden;border-bottom:1px solid rgba(255,214,66,.22);background:rgba(255,214,66,.08);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.reg-cta__ticker-track{display:flex;align-items:center;width:max-content;height:100%;white-space:nowrap;animation:regCtaTicker 22s linear infinite}
.reg-cta__ticker span{display:inline-flex;align-items:center;gap:8px;padding:0 19px;color:#fff3c0;font-size:12px;font-weight:900;letter-spacing:.04em}
.reg-cta__ticker i{color:var(--cta-gold);font-style:normal}
.reg-cta__glow{position:absolute;z-index:-1;width:290px;height:290px;right:-82px;top:-108px;border:40px solid rgba(255,214,66,.18);border-radius:50%;filter:drop-shadow(0 0 30px rgba(255,214,66,.24));animation:regCtaFloat 5.2s ease-in-out infinite}
.reg-cta__sparks i{position:absolute;z-index:-1;width:6px;height:6px;border-radius:50%;background:var(--cta-gold);box-shadow:0 0 18px var(--cta-gold);animation:regCtaSpark 3.4s ease-in-out infinite}
.reg-cta__sparks i:nth-child(1){top:22%;right:27%}.reg-cta__sparks i:nth-child(2){top:64%;right:8%;animation-delay:-1.1s}.reg-cta__sparks i:nth-child(3){bottom:10%;left:42%;animation-delay:-2.2s}
.reg-cta__eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--cta-gold);font-size:13px;font-weight:950;letter-spacing:.075em}
.reg-cta__eyebrow i{width:9px;height:9px;border-radius:50%;background:var(--cta-gold);box-shadow:0 0 0 0 rgba(255,214,66,.5);animation:regCtaPulse 2s ease-out infinite}
.reg-cta h2{max-width:880px;margin:10px 0 12px;color:#fffaf0;font-size:clamp(32px,4.25vw,48px);font-weight:950;line-height:1.09;letter-spacing:-.035em;text-wrap:balance}
.reg-cta--end h2{font-size:clamp(27px,3.3vw,40px)}
.reg-cta p{max-width:780px;margin:0;color:rgba(255,250,240,.82);font-size:clamp(16px,1.45vw,18px);line-height:1.7}
.reg-cta__offers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:22px}
.reg-cta__offer{display:grid;gap:4px;min-height:116px;padding:14px;border:1px solid rgba(255,214,66,.2);border-radius:15px;background:linear-gradient(145deg,rgba(255,255,255,.075),rgba(255,255,255,.025));transition:transform .35s ease,border-color .35s ease,background .35s ease,box-shadow .35s ease}
.reg-cta__offer.is-active,.reg-cta__offer:hover{transform:translateY(-5px);border-color:rgba(255,214,66,.68);background:linear-gradient(145deg,rgba(255,214,66,.17),rgba(255,255,255,.035));box-shadow:0 16px 34px rgba(0,0,0,.2)}
.reg-cta__offer span{color:var(--cta-gold);font-size:10px;font-weight:950;letter-spacing:.06em}.reg-cta__offer strong{color:#fff;font-size:17px;line-height:1.25}.reg-cta__offer small{color:rgba(255,250,240,.65);font-size:11px;line-height:1.45}
.reg-cta__reveal{margin-top:14px;border:1px dashed rgba(255,214,66,.42);border-radius:16px;background:rgba(255,214,66,.055);overflow:hidden}
.reg-cta__reveal button{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;width:100%;padding:13px 15px;border:0;background:transparent;color:#fffaf0;text-align:left;cursor:pointer}
.reg-cta__reveal button:after{content:"";position:absolute;inset:0 auto 0 -35%;width:24%;transform:skewX(-18deg);background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);animation:regCtaRevealShine 3.2s ease-in-out infinite}
.reg-cta__reveal button b{display:block;font-size:14px}.reg-cta__reveal button small{display:block;margin-top:2px;color:rgba(255,250,240,.6);font-size:11px}.reg-cta__reveal button>i{color:var(--cta-gold);font-size:20px;font-style:normal;transition:transform .25s ease}
.reg-cta__reveal-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:linear-gradient(180deg,var(--cta-gold-hi),var(--cta-gold));color:#080704;font-size:18px;box-shadow:0 9px 24px rgba(255,214,66,.26);animation:regCtaWiggle 2.4s ease-in-out infinite}
.reg-cta__reveal-result{max-height:0;padding:0 15px;opacity:0;transform:translateY(-8px);transition:max-height .38s ease,padding .38s ease,opacity .28s ease,transform .38s ease}
.reg-cta__reveal.is-open .reg-cta__reveal-result{max-height:180px;padding:4px 15px 16px;opacity:1;transform:translateY(0)}.reg-cta__reveal.is-open button>i{transform:rotate(90deg)}
.reg-cta__reveal-result span{display:block;color:var(--cta-gold);font-size:10px;font-weight:950;letter-spacing:.08em}.reg-cta__reveal-result strong{display:block;margin:4px 0;color:#fff;font-size:15px}.reg-cta__reveal-result small{display:block;color:rgba(255,250,240,.62);font-size:10px;line-height:1.5}
.reg-cta__chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.reg-cta__chips span{padding:6px 12px;border:1px solid rgba(255,214,66,.32);border-radius:999px;background:rgba(255,214,66,.09);color:#fff3c0;font-size:12px;font-weight:900;animation:regCtaChip 3.6s ease-in-out infinite}.reg-cta__chips span:nth-child(2){animation-delay:-.9s}.reg-cta__chips span:nth-child(3){animation-delay:-1.8s}.reg-cta__chips span:nth-child(4){animation-delay:-2.7s}
.reg-cta__actions{display:grid;gap:10px;min-width:min(100%,270px)}
.reg-cta--hero .reg-cta__actions{grid-template-columns:repeat(2,minmax(0,1fr));width:100%;min-width:0}.reg-cta--hero .reg-cta__action-kicker,.reg-cta--hero .reg-cta__trust,.reg-cta--hero .reg-cta__actions>small{grid-column:1/-1}
.reg-cta__action-kicker{color:var(--cta-gold);font-size:12px;font-weight:950;text-align:center;letter-spacing:.04em}
.reg-cta__button{position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;min-height:58px;padding:0 24px;border-radius:999px;background:linear-gradient(180deg,var(--cta-gold-hi),var(--cta-gold));color:#080704!important;font-size:17px;font-weight:950;line-height:1;text-align:center;text-decoration:none;box-shadow:0 18px 42px rgba(255,214,66,.32);transition:transform .18s ease,filter .18s ease,box-shadow .18s ease;animation:regCtaButtonBreath 2.8s ease-in-out infinite}
.reg-cta__button:after{content:"";position:absolute;inset:-30% auto -30% -50%;width:35%;transform:skewX(-18deg);background:linear-gradient(90deg,transparent,rgba(255,255,255,.75),transparent);animation:regCtaShine 3.5s ease-in-out infinite}
.reg-cta__button:hover,.reg-cta__button:focus-visible{transform:translateY(-4px) scale(1.025);filter:saturate(1.14) brightness(1.04);box-shadow:0 24px 56px rgba(255,214,66,.48)}.reg-cta__button:active{transform:translateY(1px) scale(.985)}
.reg-cta__button--secondary{border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.085);color:#fffaf0!important;box-shadow:none;backdrop-filter:blur(10px);animation:none}.reg-cta__button--secondary:after{display:none}.reg-cta__button--secondary:hover,.reg-cta__button--secondary:focus-visible{background:rgba(255,255,255,.15);box-shadow:0 16px 32px rgba(0,0,0,.22)}
.reg-cta__trust{display:flex;justify-content:center;flex-wrap:wrap;gap:5px 9px;color:rgba(255,250,240,.68);font-size:10px;font-weight:800}.reg-cta__actions>small{max-width:310px;color:rgba(255,250,240,.56);font-size:10px;line-height:1.45;text-align:center}
@keyframes regCtaTicker{to{transform:translateX(-50%)}}@keyframes regCtaAura{to{transform:rotate(360deg)}}@keyframes regCtaFloat{0%,100%{transform:translate3d(0,0,0) rotate(0)}50%{transform:translate3d(-18px,14px,0) rotate(10deg)}}@keyframes regCtaSpark{0%,100%{opacity:.2;transform:scale(.6) translateY(0)}50%{opacity:1;transform:scale(1.25) translateY(-12px)}}@keyframes regCtaPulse{70%{box-shadow:0 0 0 9px rgba(255,214,66,0)}100%{box-shadow:0 0 0 0 rgba(255,214,66,0)}}@keyframes regCtaShine{0%,68%{left:-55%;opacity:0}76%{opacity:1}100%{left:125%;opacity:0}}@keyframes regCtaRevealShine{0%,56%{left:-35%;opacity:0}68%{opacity:1}100%{left:125%;opacity:0}}@keyframes regCtaWiggle{0%,100%{transform:rotate(-5deg) scale(1)}50%{transform:rotate(6deg) scale(1.08)}}@keyframes regCtaButtonBreath{0%,100%{box-shadow:0 18px 42px rgba(255,214,66,.28)}50%{box-shadow:0 20px 58px rgba(255,214,66,.5)}}@keyframes regCtaChip{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)}}
@media(max-width:760px){.reg-cta{margin:22px 0;padding:54px 18px 24px}.reg-cta--hero,.reg-cta--end{grid-template-columns:1fr;gap:22px}.reg-cta h2,.reg-cta--end h2{font-size:clamp(29px,9.4vw,38px)}.reg-cta p{font-size:16px}.reg-cta__offers{grid-template-columns:1fr}.reg-cta__offer{min-height:0}.reg-cta__actions,.reg-cta--hero .reg-cta__actions{grid-template-columns:1fr;width:100%;min-width:0}.reg-cta--hero .reg-cta__action-kicker,.reg-cta--hero .reg-cta__trust,.reg-cta--hero .reg-cta__actions>small{grid-column:auto}.reg-cta__button{width:100%;min-height:54px;font-size:16px}.reg-cta__actions>small{max-width:none}.reg-cta__glow{width:190px;height:190px}.reg-cta__ticker span{padding:0 14px}.reg-cta__reveal button{grid-template-columns:auto 1fr auto}}
@media(prefers-reduced-motion:reduce){.reg-cta,.reg-cta:before,.reg-cta__ticker-track,.reg-cta__glow,.reg-cta__sparks i,.reg-cta__eyebrow i,.reg-cta__offer,.reg-cta__reveal button:after,.reg-cta__reveal-icon,.reg-cta__chips span,.reg-cta__button,.reg-cta__button:after{animation:none!important;transition:none!important}.reg-cta[data-cta-motion="pending"]{opacity:1;transform:none}}