:root{--pp-white:#ffffff;--pp-page:#f4f7f6;--pp-ink:#1c2a2a;--pp-mute:#536160;--pp-line:#d3dfdc;--pp-teal:#0f6e6e;--pp-teal-dark:#0a5151;--pp-teal-soft:#dcefec;--pp-lemon:#f2d94e;--pp-lemon-soft:#fbf3c4;--pp-sans:"PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", Roboto, sans-serif}body{color:var(--pp-ink);background:var(--pp-page);font-family:var(--pp-sans);font-size:16px;line-height:1.75}a{color:var(--pp-teal)}:focus-visible{outline:3px solid var(--pp-teal);outline-offset:2px}.pp-kicker{color:var(--pp-teal);font-size:14px;font-weight:800;letter-spacing:.06em}.pp-small{margin-top:12px;color:var(--pp-mute);font-size:14px}.pp-empty{padding:14px 16px;color:var(--pp-mute);border:1.5px dashed var(--pp-line)}.pp-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border:2px solid var(--pp-teal);border-radius:6px;font-size:16px;font-weight:800;text-decoration:none;white-space:nowrap}.pp-btn-sm{min-height:44px;padding:0 16px;font-size:15px}.pp-btn-teal{color:var(--pp-white);background:var(--pp-teal)}.pp-btn-teal:hover{background:var(--pp-teal-dark);border-color:var(--pp-teal-dark)}.pp-btn-line{color:var(--pp-teal);background:var(--pp-white)}.pp-btn-line:hover{background:var(--pp-teal-soft)}.pp-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.pp-row-centre{justify-content:center}.pp-link{display:inline-flex;align-items:center;min-height:44px;margin-top:10px;font-weight:800;text-underline-offset:5px}.pp-link::after{content:"→";margin-left:8px}.pp-cover{background:var(--pp-white);border-top:6px solid var(--pp-lemon);border-bottom:2px dashed var(--pp-teal)}.pp-cover-in{position:relative;display:flex;align-items:center;gap:24px;max-width:1160px;min-height:70px;margin:0 auto;padding:0 24px}.pp-model{min-height:44px;display:inline-flex;align-items:center;gap:10px;color:var(--pp-ink);font-size:19px;font-weight:900;text-decoration:none}.pp-plane{display:inline-grid;place-items:center;width:34px;height:34px;color:var(--pp-teal-dark);background:linear-gradient(135deg, var(--pp-lemon) 0 50%, var(--pp-white) 50%);border:2px solid var(--pp-teal);font-size:14px;font-weight:900}.pp-nav{display:flex;flex:1;gap:2px}.pp-nav-a{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;color:var(--pp-ink);font-size:15px;text-decoration:none;border-bottom:3px solid transparent}.pp-nav-a:hover,.pp-nav-a[aria-current]{color:var(--pp-teal);border-bottom-color:var(--pp-lemon)}.pp-cover-keys{display:flex;align-items:center;gap:8px}.pp-flap{display:none}.pp-flap > summary{display:flex;align-items:center;min-height:44px;padding:0 16px;color:var(--pp-teal);border:2px solid var(--pp-teal);border-radius:6px;font-weight:800}.pp-flap-list{position:absolute;top:100%;right:16px;left:16px;z-index:30;display:grid;grid-template-columns:1fr 1fr;gap:4px 12px;padding:14px;background:var(--pp-white);border:2px solid var(--pp-teal);box-shadow:6px 6px 0 var(--pp-lemon)}.pp-notice{display:flex;align-items:flex-start;gap:10px;max-width:1112px;margin:18px auto 0;padding:12px 18px;background:var(--pp-lemon-soft);border:1.5px solid #e6cf52}.pp-warn{display:grid;flex:none;place-items:center;width:22px;height:22px;margin-top:2px;color:var(--pp-ink);background:var(--pp-lemon);clip-path:polygon(50% 0, 100% 100%, 0 100%);font-size:12px;font-weight:900;padding-top:4px}.pp-notice b{flex:none}.pp-hero{padding:56px 24px 30px}.pp-hero-in{display:grid;grid-template-columns:minmax(0, 1fr) minmax(0, 1.05fr);gap:48px;align-items:center;max-width:1160px;margin:0 auto}.pp-hero h1{margin-top:10px;font-size:36px;line-height:1.3}.pp-claim{margin-top:10px;font-size:21px;font-weight:800}.pp-lede{margin-top:12px;color:var(--pp-mute);font-size:17px}.pp-meta{margin-top:14px;padding-left:12px;color:var(--pp-teal-dark);font-size:14px;font-weight:700;border-left:4px solid var(--pp-lemon)}.pp-folds{display:grid;grid-template-columns:repeat(3, minmax(0, 1fr));gap:0;margin:0;padding:0;list-style:none;background:var(--pp-white);border:2px solid var(--pp-teal)}.pp-fold{display:grid;align-content:start;gap:8px;padding:18px 16px 20px}.pp-fold + .pp-fold{border-left:2px dashed var(--pp-line)}.pp-fold-art svg{width:100%;height:auto;max-height:110px}.pp-fold b{display:flex;align-items:center;gap:8px;font-size:19px}.pp-fold b span{display:grid;place-items:center;width:28px;height:28px;color:var(--pp-ink);background:var(--pp-lemon);font-size:15px}.pp-fold small{color:var(--pp-mute);font-size:14px}.pp-hero-facts{display:block;margin-top:30px}.pp-specs{display:grid;grid-template-columns:repeat(auto-fit, minmax(200px, 1fr));gap:0;background:var(--pp-white);border:1.5px solid var(--pp-line)}.pp-specs > div{padding:14px 18px}.pp-specs > div + div{border-left:1.5px solid var(--pp-line)}.pp-specs dd{color:var(--pp-mute)}.pp-manual{max-width:1000px;margin:0 auto;padding:30px 24px 90px}.pp-arrow{position:relative;height:64px}.pp-arrow::before{content:"";position:absolute;top:6px;bottom:14px;left:50%;border-left:2px dashed var(--pp-teal)}.pp-arrow::after{content:"";position:absolute;bottom:6px;left:calc(50% - 7px);width:0;height:0;border-top:10px solid var(--pp-teal);border-right:8px solid transparent;border-left:8px solid transparent}.pp-step{padding:34px 36px;background:var(--pp-white);border:2px solid var(--pp-teal)}.pp-step-head{margin-bottom:22px}.pp-step-no{display:flex;align-items:center;gap:10px;color:var(--pp-teal);font-size:14px;font-weight:800}.pp-step-no b{display:grid;place-items:center;width:40px;height:40px;color:var(--pp-ink);background:var(--pp-lemon);font-size:22px}.pp-step h2{margin-top:10px;font-size:27px;line-height:1.35}.pp-step-intro{margin-top:4px;color:var(--pp-mute)}.pp-parts{display:grid;grid-template-columns:repeat(4, minmax(0, 1fr));gap:14px;margin:0;padding:0;list-style:none}.pp-parts li{display:grid;gap:4px;padding:16px;background:var(--pp-page);border:1.5px solid var(--pp-line)}.pp-part-code{display:grid;place-items:center;width:30px;height:30px;color:var(--pp-white);background:var(--pp-teal);border-radius:50%;font-weight:900}.pp-parts b{font-size:17px}.pp-parts small{color:var(--pp-mute);font-size:14px}.pp-tray-keys{display:flex;justify-content:flex-end;gap:8px;margin-bottom:12px}.pp-tray{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(250px, calc((100% - 36px) / 3));gap:18px;padding:18px;overflow-x:auto;scroll-snap-type:x mandatory;background:repeating-linear-gradient(45deg, var(--pp-page) 0 10px, #eaf1ef 10px 20px);border:1.5px solid var(--pp-line)}.pp-kit{position:relative;display:flex;flex-direction:column;padding:20px;background:var(--pp-white);border:2px solid var(--pp-ink);scroll-snap-align:start}.pp-kit-pick{border-color:var(--pp-teal);box-shadow:6px 6px 0 var(--pp-lemon)}.pp-kit-code{color:var(--pp-mute);font-size:13px;font-weight:800;letter-spacing:.1em}.pp-kit-flag{position:absolute;top:18px;right:18px;padding:0 8px;color:var(--pp-ink);background:var(--pp-lemon);font-size:13px;font-weight:800}.pp-kit h3{margin-top:6px;font-size:21px}.pp-kit-price{display:flex;align-items:baseline;gap:8px;font-size:30px;font-weight:900}.pp-kit-price span{color:var(--pp-mute);font-size:15px;font-weight:400}.pp-kit-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px;padding-top:12px;border-top:2px dashed var(--pp-line)}.pp-kit-list dd{color:var(--pp-mute)}.pp-kit-note{flex:1;margin:10px 0 16px;color:var(--pp-mute);font-size:14px}.pp-fits{display:grid;grid-template-columns:1fr 1fr;gap:18px}.pp-fit h3{display:flex;align-items:center;gap:12px;padding-bottom:10px;font-size:18px;border-bottom:2px solid var(--pp-teal)}.pp-fit-draw{position:relative;width:44px;height:30px;border:2px solid var(--pp-teal)}.pp-fit-desktop{border-radius:3px 3px 0 0;box-shadow:0 6px 0 -2px var(--pp-white), 0 6px 0 0 var(--pp-teal)}.pp-fit-mobile{width:20px;height:32px;border-radius:4px}.pp-fit ul{margin:0;padding:0;list-style:none}.pp-fit li{display:grid;grid-template-columns:30px minmax(0, 1fr) auto;gap:12px;align-items:center;padding:10px 4px;border-bottom:1.5px dashed var(--pp-line)}.pp-fit-icon svg{width:22px;height:22px}.pp-fit-name{display:grid;font-weight:800}.pp-fit-name em{display:none;color:var(--pp-teal-dark);font-size:12px;font-style:normal}.pp-fit li[data-v4-current]{background:var(--pp-lemon-soft)}.pp-fit li[data-v4-current] em{display:block}.pp-howto{padding:20px 24px;background:var(--pp-teal-soft);border-left:6px solid var(--pp-teal)}.pp-howto .v4-rich{margin-top:8px}.pp-howto .v4-rich p + p{margin-top:10px}.pp-trouble details{border-bottom:1.5px dashed var(--pp-line)}.pp-trouble summary{display:flex;align-items:center;gap:12px;min-height:56px;font-weight:800}.pp-trouble summary::before{content:"?";display:grid;flex:none;place-items:center;width:26px;height:26px;color:var(--pp-white);background:var(--pp-teal);border-radius:50%;font-size:14px}.pp-trouble p{padding:0 0 14px 38px;color:var(--pp-mute)}.pp-pagehead{max-width:1000px;margin:0 auto;padding:50px 24px 26px}.pp-crumbs{display:flex;gap:8px;color:var(--pp-mute);font-size:14px}.pp-crumbs a{display:inline-flex;align-items:center;min-height:44px}.pp-crumbs span{display:inline-flex;align-items:center}.pp-pagehead h1{font-size:34px}.pp-pages{display:grid;grid-template-columns:minmax(0, 1fr);gap:16px;max-width:1000px;margin:0 auto;padding:0 24px 90px}.pp-card{position:relative;padding:26px 30px;background:var(--pp-white);border:1.5px solid var(--pp-line);border-top:4px solid var(--pp-teal)}.pp-card-lead{font-size:17px;border-top-color:var(--pp-lemon)}.pp-card-sub{margin-left:30px;border-top-width:2px}.pp-card-no{position:absolute;top:-4px;right:20px;padding:2px 10px;color:var(--pp-ink);background:var(--pp-lemon);font-size:13px;font-weight:800}.pp-card :is(h2,h3,h4){margin-bottom:6px;padding-right:80px;font-size:21px;line-height:1.45}.pp-card-sub :is(h3,h4){font-size:18px}.pp-card .v4-rich :is(p,ul,ol) + :is(p,ul,ol){margin-top:10px}.pp-divider{display:grid;grid-template-columns:auto minmax(0, 1fr);gap:4px 14px;align-items:center;margin-top:14px}.pp-divider::before{content:"";width:30px;height:22px;background:linear-gradient(135deg, var(--pp-lemon) 0 50%, transparent 50%);border:2px solid var(--pp-teal)}.pp-divider :is(h2,h3){font-size:24px}.pp-divider .v4-rich{grid-column:1 / -1}.pp-numbered{margin:8px 0 0;padding-left:22px}.pp-flip{margin-top:30px}.pp-flip h2{font-size:18px}.pp-flip p{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.pp-gate{display:grid;place-items:center;min-height:72vh;padding:50px 20px}.pp-gate-card{width:min(520px, 100%);text-align:center}.pp-gate-art{display:block;width:140px;margin:0 auto 10px}.pp-gate-art svg{width:100%;height:auto}.pp-gate-card h1{margin-top:6px;font-size:28px}.pp-gate-to{display:grid;margin-top:12px;font-weight:800;overflow-wrap:anywhere}.pp-gate-to span{color:var(--pp-mute);font-size:14px;font-weight:400}.pp-gate-path{display:grid;justify-items:center;gap:10px;margin-top:20px;--v4-bar-h:8px;--v4-bar-r:0;--v4-bar-track:var(--pp-teal-soft);--v4-bar-fill:var(--pp-teal)}.pp-back{color:#d9ecea;background:var(--pp-teal-dark)}.pp-back-row{display:grid;grid-template-columns:minmax(0, 1.2fr) minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, .8fr);max-width:1160px;margin:0 auto;padding:40px 24px 26px}.pp-field{padding:0 22px;border-left:2px dashed rgba(255, 255, 255, .25)}.pp-field:first-child{padding-left:0;border-left:0}.pp-model-foot{margin:0;color:var(--pp-white)}.pp-field-text{margin-top:8px;font-size:14px}.pp-back h2{margin-bottom:6px;color:var(--pp-lemon);font-size:13px;letter-spacing:.1em}.pp-back-nav{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.pp-back-a{color:var(--pp-white);text-decoration:none}.pp-back-a:hover{text-decoration:underline}.pp-field .v4-rich{font-size:14px}.pp-back-keys{display:flex;flex-wrap:wrap;gap:0 16px}.pp-back-keys a{display:inline-flex;align-items:center;min-height:44px}.pp-back-line{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 20px;max-width:1160px;margin:0 auto;padding:14px 24px 24px;color:#c3dcd9;font-size:14px;border-top:4px solid var(--pp-lemon)}@media (max-width: 1040px){.pp-nav,.pp-in{display:none}.pp-cover-keys{margin-left:auto}.pp-flap{display:block}.pp-hero-in{grid-template-columns:1fr}.pp-parts{grid-template-columns:repeat(2, minmax(0, 1fr))}.pp-back-row{grid-template-columns:1fr 1fr;gap:22px 0}.pp-field:nth-child(3){padding-left:0;border-left:0}}@media (max-width: 680px){.pp-cover-in{gap:8px;padding:0 14px}.pp-model{font-size:16px}.pp-notice{margin:14px 12px 0}.pp-hero{padding:40px 14px 20px}.pp-hero h1,.pp-pagehead h1{font-size:28px}.pp-claim{font-size:18px}.pp-folds{grid-template-columns:1fr}.pp-fold{grid-template-columns:96px minmax(0, 1fr);align-items:center;gap:4px 14px}.pp-fold-art{grid-row:span 2}.pp-fold + .pp-fold{border-top:2px dashed var(--pp-line);border-left:0}.pp-specs > div + div{border-top:1.5px solid var(--pp-line);border-left:0}.pp-manual{padding:20px 12px 70px}.pp-step{padding:26px 18px}.pp-step h2{font-size:23px}.pp-parts,.pp-fits{grid-template-columns:minmax(0, 1fr)}.pp-tray{grid-auto-columns:82%;padding:12px}.pp-pagehead,.pp-pages{padding-right:12px;padding-left:12px}.pp-card{padding:24px 18px}.pp-card-sub{margin-left:0}.pp-back-row{grid-template-columns:1fr;padding:34px 14px 22px}.pp-field,.pp-field:nth-child(3){padding:16px 0 0;border-top:2px dashed rgba(255, 255, 255, .25);border-left:0}.pp-field:first-child{padding-top:0;border-top:0}.pp-back-line{padding:14px}}:root{--v4-masthead-width:min(952px, calc(100% - 48px))}@media (max-width: 680px){:root{--v4-masthead-width:min(952px, calc(100% - 24px))}}.v4-paperplane .pp-cover .pp-cover-in,.v4-paperplane [data-v4-primary-nav]{width:var(--v4-masthead-width);max-width:none;margin-inline:auto;padding-inline:0}.v4-paperplane{--v4-notice-bg:rgb(251, 243, 196);--v4-notice-ink:rgb(28, 42, 42)}