.fd{background:var(--background)}.fd-hero{position:relative;padding:clamp(20px,4vh,48px) 0 clamp(40px,6vh,72px);overflow:hidden}.fd-hero:before{content:"";position:absolute;inset:0 0 auto;height:700px;pointer-events:none;background:radial-gradient(45% 70% at 80% 10%,color-mix(in srgb,var(--tone) 14%,transparent),transparent 70%)}.fd-top{position:relative;display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.2fr);align-items:center;gap:52px}.fd-top-solo{grid-template-columns:minmax(0,1fr);max-width:52rem}.fd-id{display:flex;align-items:center;gap:16px;margin-bottom:24px}.fd-tile{display:flex;flex:none;flex-direction:column;width:84px;height:92px;padding:9px 10px;border:1px solid color-mix(in srgb,var(--tone) 60%,transparent);border-radius:16px;background:color-mix(in srgb,var(--tone) 10%,transparent);box-shadow:0 0 0 1px var(--tone),0 20px 50px -18px color-mix(in srgb,var(--tone) 70%,transparent)}.fd-tile-no{display:flex;justify-content:space-between;font:500 10px/1 var(--font-mono-stack);color:var(--kw-mute)}.fd-tile-s{margin-top:auto;font:600 40px/.9 var(--font-sans),sans-serif;letter-spacing:-.05em;color:var(--tone)}.fd-id small{display:block;font:500 12px/1.5 var(--font-mono-stack);letter-spacing:.12em;text-transform:uppercase;color:var(--kw-mute)}.fd-id b{font-size:15px;font-weight:400;line-height:1.4;color:var(--kw-ink-2)}.fd-h1{font-size:clamp(42px,4.8vw,80px)}.fd-lead{margin-top:20px}.fd-cta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:28px}.fd-rules{display:grid;gap:8px;margin:22px 0 0;padding:14px 16px;border:1px solid var(--kw-line-2);border-radius:14px;background:rgba(243,239,231,.02)}.fd-rules>div{display:grid;grid-template-columns:minmax(7.5rem,auto) minmax(0,1fr);gap:4px 14px}.fd-rules dt{font:500 11.5px/1.6 var(--font-mono-stack);letter-spacing:.08em;text-transform:uppercase;color:var(--kw-mute)}.fd-rules dd{margin:0;font-size:14px;line-height:1.55;color:var(--kw-ink-2)}@media (max-width:480px){.fd-rules>div{grid-template-columns:minmax(0,1fr)}}.fd-bullets{display:grid;gap:10px;margin:24px 0 0;padding:18px 0 0;border-top:1px solid var(--kw-line);list-style:none}.fd-bullets li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:10px;font-size:14.5px;line-height:1.55;color:var(--kw-ink-2)}.fd-bullets svg{width:16px;height:16px;margin-top:3px;color:var(--tone)}.fd-viewer{margin:0;overflow:hidden;border:1px solid var(--kw-line-2);border-radius:16px;background:var(--kw-bg-2);box-shadow:0 50px 120px -40px rgba(0,0,0,.95),0 0 120px -50px color-mix(in srgb,var(--tone) 45%,transparent)}.fd-viewer-bar{display:flex;align-items:center;gap:12px;height:40px;padding:0 14px;border-bottom:1px solid var(--kw-line);font:500 12px/1 var(--font-mono-stack);color:var(--kw-mute)}.fd-lights{display:flex;gap:6px}.fd-lights i{width:10px;height:10px;border-radius:50%;background:#2a2e35}.fd-viewer-name{color:var(--kw-ink-2)}.fd-viewer-sym{margin-left:auto;color:var(--tone)}.fd-viewer-shot{display:block;width:100%;height:auto}.fd-frame figcaption,.fd-viewer figcaption{padding:12px 16px 14px;border-top:1px solid var(--kw-line);font-size:12.5px;line-height:1.55;color:var(--kw-mute)}.fd-onpage{margin-top:clamp(36px,6vh,64px)}.fd-onpage ul{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:16px 0 0;border-top:1px solid var(--kw-line);list-style:none}.fd-onpage a{display:inline-flex;align-items:center;height:34px;padding:0 14px;border:1px solid var(--kw-line-2);border-radius:999px;font-size:13.5px;color:var(--kw-ink-2);transition:border-color .2s,color .2s}.fd-onpage a:hover{border-color:var(--tone);color:var(--kw-ink)}.fd-overview-body{max-width:46rem;margin-top:20px}.fd-stills{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.fd-stills.is-one{grid-template-columns:minmax(0,1fr);max-width:calc(56rem + var(--kw-gut) * 2)}.fd-frame{margin:0;overflow:hidden;border:1px solid var(--kw-line-2);border-radius:16px;background:var(--kw-bg-1)}.fd-frame img{display:block;width:100%;height:auto}.fd-caps{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,280px),1fr));gap:14px;margin:clamp(28px,4vh,44px) 0 0;padding:0;list-style:none}.fd-cap{padding:22px 22px 20px;border:1px solid var(--kw-line);border-radius:18px;background:var(--kw-bg-1)}.fd-cap-no{display:block;margin-bottom:14px;font:italic 400 30px/1 var(--font-display);color:var(--tone)}.fd-cap h3{margin:0 0 6px;font-size:17px;font-weight:500;line-height:1.35;color:var(--kw-ink)}.fd-cap p{margin:0;font-size:14.5px;line-height:1.6;color:var(--kw-mute)}.fd-prose{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:24px 56px;align-items:start}.fd-prose-body li,.fd-prose-body p{font-size:16px;line-height:1.75;color:var(--kw-ink-2)}.fd-prose-body p{margin:0 0 16px}.fd-prose-body ul{display:grid;gap:8px;margin:4px 0 0;padding:0;list-style:none}.fd-prose-body li{position:relative;padding-left:20px}.fd-prose-body li:before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--tone)}.fd :is(.fd-prose-body,.fd-cap,.fd-overview-body,.fd-steps) a{color:var(--kw-teal);text-decoration:underline;text-decoration-color:rgba(45,212,191,.35);text-underline-offset:4px}.fd-how{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:44px;align-items:center}.fd-how.is-solo{grid-template-columns:minmax(0,1fr);max-width:calc(48rem + var(--kw-gut) * 2)}.fd-steps{display:grid;gap:22px;margin:28px 0 0;padding:0;list-style:none}.fd-steps li{display:grid;grid-template-columns:52px minmax(0,1fr);gap:14px}.fd-step-no{font:italic 400 40px/1 var(--font-display);color:var(--kw-warm)}.fd-steps h3{margin:4px 0 6px;font-size:18px;font-weight:500;line-height:1.35;color:var(--kw-ink)}.fd-steps p{margin:0;font-size:15px;line-height:1.65;color:var(--kw-mute)}.fd-how-shot{box-shadow:0 50px 120px -50px rgba(0,0,0,.95),0 0 120px -40px color-mix(in srgb,var(--tone) 30%,transparent)}.fd-req{margin-top:28px}.fd-req td small{display:block;margin-top:3px;font-size:12.5px;color:var(--kw-mute)}.fd-note{margin:12px 2px 0;font-size:12.5px;color:var(--kw-faint)}.fd-faq{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:24px 56px;align-items:start}.fd-faq dl{margin:0;border-top:1px solid var(--kw-line)}.fd-faq dl>div{padding:22px 0;border-bottom:1px solid var(--kw-line)}.fd-faq dt{font:400 clamp(21px,1.9vw,27px)/1.25 var(--font-display);letter-spacing:-.01em;color:var(--kw-ink)}.fd-faq dd{margin:10px 0 0;font-size:15.5px;line-height:1.7;color:var(--kw-ink-2)}.fd-rel{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,250px),1fr));gap:12px;margin:26px 0 0;padding:0;list-style:none}.fd-rel a{position:relative;display:flex;flex-direction:column;gap:10px;height:100%;padding:18px 18px 20px;border:1px solid var(--kw-line);border-radius:16px;background:var(--kw-bg-1);transition:border-color .3s,transform .5s var(--kw-ease)}.fd-rel a:hover{border-color:var(--kw-line-2);transform:translateY(-3px)}.fd-rel-sym{min-width:42px;height:38px;font-size:16px}.fd-rel b{font-weight:500;line-height:1.35;color:var(--kw-ink)}.fd-rel span:not(.kw-sym){font-size:13.5px;line-height:1.55;color:var(--kw-mute)}.fd-rel-go{position:absolute;top:20px;right:18px;width:16px;height:16px;color:var(--kw-faint);transition:transform .4s var(--kw-ease),color .3s}.fd-rel a:hover .fd-rel-go{color:var(--kw-teal);transform:translateX(3px)}.fd-guides-title{margin-top:clamp(56px,8vh,88px)}.fd-doc-mark{align-self:flex-start}.fd-end{text-align:center}.fd-end-sym{margin:0 0 18px}.fd-end-sym .fd-tile-s{font-size:clamp(72px,9vw,128px);text-shadow:0 0 60px color-mix(in srgb,var(--tone) 55%,transparent)}.fd-end-lead{margin:0 auto}.fd-end .fd-cta{justify-content:center}html:is([lang=zh-Hans],[lang=zh-Hant],[lang=ja],[lang=ko]) :is(.fd-id small,.fd-rules dt){letter-spacing:.04em}html:is([lang=zh-Hans],[lang=zh-Hant],[lang=ja],[lang=ko]) .fd-h1{font-size:clamp(32px,3.8vw,58px)}html:is([lang=zh-Hans],[lang=zh-Hant],[lang=ja],[lang=ko]) .fd-faq dt{font-size:clamp(18px,1.5vw,22px);font-weight:500;line-height:1.45}html:is([lang=zh-Hans],[lang=zh-Hant],[lang=ja],[lang=ko]) :is(.fd-cap-no,.fd-step-no){font-style:normal}@media (max-width:1100px){.fd-faq,.fd-how,.fd-prose,.fd-top{grid-template-columns:minmax(0,1fr)}}@media (max-width:760px){.fd-stills{grid-template-columns:minmax(0,1fr)}}@media (max-width:480px){.fd-tile{width:70px;height:78px}.fd-tile-s{font-size:32px}.fd-steps li{grid-template-columns:40px minmax(0,1fr)}.fd-step-no{font-size:32px}}@media (prefers-reduced-motion:reduce){.fd-onpage a,.fd-rel a,.fd-rel-go{transition:none}.fd-rel a:hover{transform:none}}