/* Inner platform pages. Builds on the homepage tokens (--bg, --t1, --glowA ...) from pc.css.
   Each page tints itself with the --accent* tokens below (set in its page.css, after this file). */
.pc{--accent:#2563EB;--accent-t:var(--acc);--accent-soft:var(--icon);--accent-line:var(--tab-onb);--accent-glow:rgba(37,99,235,.9);--accent-grad:linear-gradient(100deg,#2563EB,#5CB2FF 55%,#22D3EE)}
.wpx{background:var(--bg);color:var(--t1)}
.wpx-alt{background:var(--bg2)}
.wpx-pad{padding:120px 0}
.wpx-wrap{max-width:1280px;margin:0 auto;padding:0 20px}
.wpx h2{margin:0;font-size:clamp(32px,4vw,54px);line-height:1.15;font-weight:900;letter-spacing:-.02em}
.wpx h3{margin:0;font-weight:800;text-wrap:balance}
.wpx h2{text-wrap:balance}
.wpx p{margin:0;text-wrap:pretty}
.wpx-dim{color:var(--dim)}
.wpx-eyebrow{font-size:13px;color:var(--accent-t)}
.wpx-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:44px}
.wpx-head>div{display:flex;flex-direction:column;gap:16px;max-width:760px}
.wpx-head>p{max-width:440px;font-size:16px;line-height:1.8;color:var(--t2)}
.wpx-check{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.wpx-check li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.6;font-weight:600}
.wpx-check li::before{content:"";flex:none;width:20px;height:20px;margin-top:2px;border-radius:50%;background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/11px no-repeat}
.wpx-tag{align-self:flex-start;font-size:12px;color:var(--accent-t);background:var(--accent-soft);border-radius:999px;padding:5px 12px}
.wpx-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--accent-t)}

/* backdrops (same language as the homepage sections) */
#wp-hero::after{background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:72px 72px;-webkit-mask-image:radial-gradient(ellipse 55% 60% at 72% 40%,#000,transparent 75%);mask-image:radial-gradient(ellipse 55% 60% at 72% 40%,#000,transparent 75%)}
#wp-hero::before{background:radial-gradient(ellipse 45% 55% at 80% 30%,var(--glowA),transparent 70%),radial-gradient(ellipse 35% 40% at 0% 100%,var(--glowC),transparent 70%)}
#wp-fit::before{background:radial-gradient(ellipse 45% 45% at 100% 0%,var(--glowB),transparent 70%),radial-gradient(ellipse 40% 45% at 0% 100%,var(--glowA),transparent 70%)}
#wp-fit::after{background-image:radial-gradient(var(--dotc) 1.2px,transparent 1.5px);background-size:22px 22px;-webkit-mask-image:radial-gradient(ellipse 50% 45% at 100% 0%,#000,transparent 75%);mask-image:radial-gradient(ellipse 50% 45% at 100% 0%,#000,transparent 75%)}
#wp-types::before{background:radial-gradient(ellipse 50% 45% at 0% 0%,var(--glowA),transparent 70%),radial-gradient(ellipse 40% 45% at 100% 100%,var(--glowC),transparent 70%)}
#wp-types::after{background-image:linear-gradient(var(--gridc) 1px,transparent 1px),linear-gradient(90deg,var(--gridc) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse 70% 45% at 20% 0%,#000,transparent 75%);mask-image:radial-gradient(ellipse 70% 45% at 20% 0%,#000,transparent 75%)}
#wp-compare::before{background:radial-gradient(ellipse 45% 50% at 100% 20%,var(--glowA),transparent 70%),radial-gradient(ellipse 35% 40% at 0% 90%,var(--glowB),transparent 70%)}
#wp-stack::before{background:radial-gradient(ellipse 45% 50% at 0% 0%,var(--glowC),transparent 70%),radial-gradient(ellipse 45% 45% at 100% 100%,var(--glowA),transparent 70%)}
#wp-stack::after{background-image:radial-gradient(var(--dotc) 1.2px,transparent 1.5px);background-size:24px 24px;-webkit-mask-image:linear-gradient(180deg,#000,transparent 50%);mask-image:linear-gradient(180deg,#000,transparent 50%);opacity:.7}
#wp-standard::before{background:radial-gradient(ellipse 40% 50% at 0% 30%,var(--glowA),transparent 70%),radial-gradient(ellipse 40% 45% at 100% 100%,var(--glowC),transparent 70%)}
#wp-standard::after{background-image:linear-gradient(var(--gridc) 1px,transparent 1px),linear-gradient(90deg,var(--gridc) 1px,transparent 1px),linear-gradient(var(--gridc) 1px,transparent 1px),linear-gradient(90deg,var(--gridc) 1px,transparent 1px);background-size:96px 96px,96px 96px,24px 24px,24px 24px;-webkit-mask-image:radial-gradient(ellipse 45% 60% at 15% 45%,#000,transparent 75%);mask-image:radial-gradient(ellipse 45% 60% at 15% 45%,#000,transparent 75%)}
#wp-process::before{background:radial-gradient(ellipse 60% 45% at 50% 0%,var(--glowA),transparent 70%),radial-gradient(ellipse 35% 45% at 100% 100%,var(--glowB),transparent 70%)}
#wp-after::before{background:radial-gradient(ellipse 50% 50% at 100% 50%,var(--glowA),transparent 70%),radial-gradient(ellipse 35% 40% at 0% 0%,var(--glowC),transparent 70%)}
#wp-faq::before{background:radial-gradient(ellipse 40% 50% at 0% 100%,var(--glowC),transparent 70%),radial-gradient(ellipse 45% 45% at 100% 0%,var(--glowA),transparent 70%)}
#wp-fit::before,#wp-compare::before,#wp-standard::before,#wp-faq::before{animation:drift 24s ease-in-out infinite alternate}

/* hero */
.wpx-hero{overflow:hidden;padding:128px 0 0}
.wpx-hero-bg{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:-1}
.wpx-hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center;padding-bottom:64px}
.wpx-hero-copy{display:flex;flex-direction:column;gap:26px}
.wpx-crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--t3)}
.wpx-crumb a{color:var(--t3)}.wpx-crumb a:hover{color:var(--t1)}
.wpx-crumb b{font-weight:500;color:var(--t1)}
.wpx-chip{align-self:flex-start;display:flex;align-items:center;gap:10px;border:1px solid var(--line2);background:var(--soft);border-radius:999px;padding:7px 16px 7px 8px;font-size:12px;color:var(--t2)}
.wpx-chip img{width:26px;height:26px;padding:4px;border-radius:50%;background:#FFFFFF}
.wpx-hero h1{margin:0;font-size:clamp(40px,5.4vw,76px);line-height:1.1;font-weight:900;letter-spacing:-.03em}
.wpx-grad{background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.wpx-lead{max-width:560px;font-size:18px;line-height:1.8;color:var(--t2)}
.wpx-actions{display:flex;flex-wrap:wrap;gap:14px}
.wpx-btn{display:inline-flex;align-items:center;gap:10px;background:var(--accent);color:#FFFFFF;font-size:16px;font-weight:700;padding:18px 30px;border-radius:999px;box-shadow:0 0 0 1px var(--accent-line),0 18px 50px -12px var(--accent-glow);transition:transform .3s cubic-bezier(.2,.7,.2,1)}
.wpx-btn:hover{color:#FFFFFF;transform:translateY(-2px)}
.wpx-btn-ghost{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-size:16px;font-weight:700;padding:17px 26px;border-radius:999px;border:1px solid var(--line2);background:var(--soft)}
.wpx-ticks{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--t2)}
.wpx-ticks li::before{content:"✓ ";color:#34D399}

.wpx-mock{position:relative;padding:28px 0 40px}
.wpx-win{border-radius:20px;background:var(--card);border:1px solid var(--line2);box-shadow:0 50px 100px -40px var(--shadow),0 0 0 1px var(--line);overflow:hidden}
.wpx-win-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--soft)}
.wpx-win-bar i{width:10px;height:10px;border-radius:50%;background:var(--line2)}
.wpx-win-bar i:first-child{background:#F87171}.wpx-win-bar i:nth-child(2){background:#FBBF24}.wpx-win-bar i:nth-child(3){background:#34D399}
.wpx-win-bar span{margin-left:12px;font-size:11px;color:var(--t3)}
.wpx-win-body{display:grid;grid-template-columns:132px minmax(0,1fr);min-height:360px}
.wpx-panel{border-right:1px solid var(--line);padding:14px 12px;display:flex;flex-direction:column;gap:12px;background:var(--panel)}
.wpx-panel-t{font-size:11px;color:var(--t3)}
.wpx-widgets{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.wpx-widgets span{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 4px;border-radius:10px;border:1px solid var(--line);background:var(--card);font-size:10.5px;color:var(--t2)}
.wpx-widgets b{font-size:14px;color:var(--accent-t)}
.wpx-drag-src{animation:wpsrc 6s ease-in-out infinite}
@keyframes wpsrc{0%,8%{border-color:var(--line)}12%,30%{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}38%,100%{border-color:var(--line);box-shadow:none}}
.wpx-canvas{padding:14px;display:flex;flex-direction:column;gap:10px;position:relative}
.wpx-site-nav{display:flex;align-items:center;gap:10px;font-size:11px}
.wpx-site-nav b{letter-spacing:.12em;margin-right:auto}
.wpx-site-nav span{width:30px;height:5px;border-radius:3px;background:var(--line2)}
.wpx-site-nav em{font-style:normal;font-size:10px;color:var(--t3)}
.wpx-site-hero{border-radius:12px;padding:20px;min-height:128px;display:flex;align-items:flex-end;color:#FFFFFF;background:radial-gradient(ellipse 60% 80% at 100% 0%,rgba(20,184,166,.6),transparent 70%),linear-gradient(120deg,#0B2530,#0F766E)}
.wpx-site-hero div{display:flex;flex-direction:column;gap:6px}
.wpx-site-hero small{font-size:9px;letter-spacing:.14em;opacity:.75}
.wpx-site-hero strong{font-size:20px;line-height:1.15}
.wpx-site-cta{align-self:flex-start;margin-top:4px;font-size:10px;font-weight:700;background:#FFFFFF;color:#0F4C5C;padding:5px 10px;border-radius:999px}
.wpx-site-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.wpx-site-grid span{height:54px;border-radius:9px;background:var(--soft);border:1px solid var(--line)}
.wpx-drop{display:grid;grid-template-columns:1fr 1fr auto;gap:6px;align-items:center;padding:10px;border-radius:10px;border:1.5px dashed var(--accent);background:var(--accent-soft);animation:wpdrop 6s cubic-bezier(.2,.7,.2,1) infinite;transform-origin:top}
.wpx-drop span{grid-column:1/-1;font-size:10px;color:var(--accent-t)}
.wpx-drop i{height:16px;border-radius:5px;background:var(--card);border:1px solid var(--line)}
.wpx-drop b{font-size:10px;color:#FFFFFF;background:var(--accent);border-radius:6px;padding:3px 9px}
@keyframes wpdrop{0%,28%{opacity:0;transform:translateY(-10px) scaleY(.6)}38%,88%{opacity:1;transform:none}96%,100%{opacity:0;transform:translateY(-6px)}}
.wpx-float{position:absolute;display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:16px;background:var(--glass2);backdrop-filter:blur(14px);border:1px solid var(--line2);box-shadow:0 24px 50px -24px var(--shadow);font-size:13px;animation:wpfloat 6s ease-in-out infinite alternate}
.wpx-float b{display:block;font-size:13px}
.wpx-float small{font-size:10.5px;color:var(--t3)}
.wpx-f1{left:-28px;bottom:6px}
.wpx-f2{right:-18px;top:-2px;animation-delay:-2s}
.wpx-f3{right:24px;bottom:-4px;gap:6px;padding:8px;animation-delay:-4s}
.wpx-f3 span{font-size:11px;padding:4px 8px;border-radius:8px;color:var(--t2)}
.wpx-f3 span:nth-child(2){background:var(--accent);color:#FFFFFF}
@keyframes wpfloat{from{transform:translateY(-6px)}to{transform:translateY(6px)}}
.wpx-score{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:16px;color:#059669;background:conic-gradient(#10B981 0 96%,var(--line) 0);position:relative}
.wpx-score::before{content:"";position:absolute;inset:4px;border-radius:50%;background:var(--card)}
.wpx-score{isolation:isolate}.wpx-score::before{z-index:-1}
.wpx-dot{width:10px;height:10px;border-radius:50%;background:#34D399;animation:pulse 2s ease-in-out infinite}
.wpx-facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.wpx-facts>div{padding:30px 22px;display:flex;flex-direction:column;gap:8px;border-left:1px solid var(--line)}
.wpx-facts>div:first-child{border-left:0;padding-left:0}
.wpx-facts strong{font-size:40px;font-weight:900;letter-spacing:-.02em;line-height:1}
.wpx-facts em{font-style:normal;color:var(--accent-t)}
.wpx-facts span{display:flex;flex-direction:column;gap:4px;font-size:15px;font-weight:600;color:var(--t2)}
.wpx-facts small{font-size:12px;font-weight:400;color:var(--t3)}

/* fit */
.wpx-fit-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.wpx-fit{border-radius:24px;padding:30px 26px;display:flex;flex-direction:column;gap:14px}
.wpx-fit h3{font-size:20px}
.wpx-fit p{font-size:15px;line-height:1.75;color:var(--t2)}
.wpx-ico{width:48px;height:48px;border-radius:14px;background:var(--accent-soft);color:var(--accent-t);display:flex;align-items:center;justify-content:center}
.wpx-ico svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.wpx-not{margin-top:16px;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,2fr) auto;gap:32px;align-items:center;padding:28px 30px;border-radius:24px;border:1px dashed var(--line2);background:var(--soft)}
.wpx-not-l{display:flex;flex-direction:column;gap:10px}
.wpx-not h3{font-size:20px;line-height:1.4}
.wpx-not ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.wpx-not li{display:flex;flex-direction:column;gap:6px;font-size:14px;line-height:1.6;color:var(--t2)}
.wpx-not li b{font-size:15px;color:var(--t1)}

/* site types (tabs) */
.wpx-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:16px}
.wpx-tabs button{font:inherit;font-size:16px;font-weight:700;color:var(--t2);text-align:left;display:flex;align-items:center;gap:12px;padding:18px 20px;border-radius:18px;border:1px solid var(--line);background:var(--card);cursor:pointer;transition:background .3s,border-color .3s,color .3s,transform .3s}
.wpx-tabs button span{font-size:12px;color:var(--t3)}
.wpx-tabs button:hover{color:var(--t1);transform:translateY(-2px)}
.wpx-tabs button[aria-selected="true"]{color:var(--t1);background:var(--accent-soft);border-color:var(--accent-line)}
.wpx-tabs button[aria-selected="true"] span{color:var(--accent-t)}
.wpx-tpanel{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:48px;align-items:center;padding:clamp(24px,3.6vw,52px);border-radius:32px;border:1px solid var(--line);background:radial-gradient(ellipse 55% 70% at 100% 0%,var(--glowc),transparent 70%),var(--panel)}
.wpx-tpanel[hidden]{display:none}
.wpx-tpanel:not(.reveal){animation:pop .6s cubic-bezier(.2,.7,.2,1) both}
.wpx-tcopy{display:flex;flex-direction:column;gap:20px}
.wpx-tcopy h3{font-size:clamp(24px,2.4vw,32px);line-height:1.3}
.wpx-tcopy>p{font-size:16px;line-height:1.8;color:var(--t2)}
.wpx-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12px}
.wpx-meta span{padding:7px 12px;border-radius:999px;border:1px solid var(--line2);color:var(--t2);background:var(--card)}
.wpx-tshot{position:relative;border-radius:20px;background:#FFFFFF;color:#0B1220;padding:14px;display:flex;flex-direction:column;gap:12px;box-shadow:0 40px 80px -40px var(--shadow);border:1px solid var(--line)}
.wpx-ts-nav{display:flex;align-items:center;gap:10px;font-size:12px}
.wpx-ts-nav b{letter-spacing:.14em;margin-right:auto}
.wpx-ts-nav i{width:34px;height:5px;border-radius:3px;background:#E3E9F2}
.wpx-ts-nav em{font-style:normal;white-space:nowrap;font-size:10px;font-weight:700;color:#FFFFFF;background:var(--c1);padding:5px 10px;border-radius:999px}
.wpx-ts-hero{border-radius:14px;min-height:150px;padding:22px;display:flex;flex-direction:column;justify-content:flex-end;gap:6px;color:#FFFFFF;background:radial-gradient(ellipse 60% 90% at 100% 0%,var(--c2),transparent 70%),linear-gradient(130deg,var(--c1),color-mix(in srgb,var(--c1) 70%,#000))}
.wpx-ts-tall{min-height:200px}
.wpx-ts-hero small{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:10px;letter-spacing:.14em;opacity:.8}
.wpx-ts-hero strong{font-size:24px;line-height:1.15}
.wpx-ts-row{display:flex;gap:8px}
.wpx-ts-row span{flex:1;white-space:nowrap;display:flex;align-items:center;gap:6px;font-size:11px;font-weight:700;padding:9px 10px;border-radius:10px;background:#F4F7FC}
.wpx-ts-row i{width:14px;height:14px;border-radius:4px;background:var(--c2)}
.wpx-ts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.wpx-ts-grid span{height:66px;border-radius:10px;background:linear-gradient(160deg,#F4F7FC,#E3E9F2);display:flex;align-items:flex-end;padding:6px}
.wpx-ts-shop span{height:84px}
.wpx-ts-grid b{font-size:11px}
.wpx-ts-langs{display:flex;flex-wrap:wrap;gap:6px}
.wpx-ts-langs span{font-size:11px;padding:7px 11px;border-radius:9px;background:#F4F7FC;color:#4A5573}
.wpx-ts-langs .on{background:var(--c1);color:#FFFFFF}
.wpx-ts-pop{position:absolute;right:-14px;bottom:-16px;font-size:11.5px;padding:11px 14px;border-radius:12px;background:#0B1220;color:#FFFFFF;box-shadow:0 20px 40px -16px rgba(11,18,32,.55);animation:toast .7s cubic-bezier(.2,.7,.2,1) .5s both}

/* compare */
.wpx-table{border-radius:28px;border:1px solid var(--line);background:var(--card);overflow:hidden}
.wpx-tr{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr) minmax(0,1.2fr);border-top:1px solid var(--line);transition:background .25s}
.wpx-tr:first-child{border-top:0}
.wpx-tr:not(.wpx-th):hover{background:var(--hover)}
.wpx-tr span{padding:20px 26px;font-size:15px;line-height:1.6;color:var(--t2);display:flex;align-items:center;gap:10px}
.wpx-tr span:first-child{font-weight:700;color:var(--t1)}
.wpx-tr span:nth-child(2){background:var(--accent-soft)}
.wpx-th span{font-size:14px;font-weight:800;color:var(--t1);padding-top:22px;padding-bottom:22px}
.wpx-th img{width:26px;height:26px;padding:4px;border-radius:50%;background:#FFFFFF;box-shadow:0 0 0 1px var(--line)}
.wpx-tr .win{color:var(--t1);font-weight:600}
.wpx-tr .win::before{content:"";flex:none;width:8px;height:8px;border-radius:50%;background:#10B981;box-shadow:0 0 0 4px rgba(16,185,129,.15)}
.wpx-note{margin-top:18px;display:flex;align-items:center;gap:10px;font-size:15px;color:var(--t2)}
.wpx-note svg{flex:none;color:var(--accent-t)}

/* stack */
.wpx-stack{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.wpx-stack>div{border-radius:22px;padding:26px 24px;display:flex;flex-direction:column;gap:12px}
.wpx-stack h3{font-size:19px}
.wpx-stack p{font-size:14px;line-height:1.7;color:var(--t2);flex:1}
.wpx-pills{display:flex;flex-wrap:wrap;gap:6px}
.wpx-pills span{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:11.5px;padding:5px 10px;border-radius:8px;border:1px solid var(--line2);color:var(--t2);background:var(--soft)}

/* delivery standard */
.wpx-std{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:64px;align-items:start}
.wpx-std-l{position:sticky;top:120px;display:flex;flex-direction:column;gap:18px}
.wpx-std-l>p{font-size:16px;line-height:1.8;color:var(--t2);max-width:420px}
.wpx-gauge{margin-top:12px;display:flex;align-items:center;gap:22px;padding:22px;border-radius:24px;border:1px solid var(--line);background:var(--card);max-width:440px}
.wpx-gauge svg{flex:none;width:112px;height:112px;transform:rotate(-90deg)}
.wpx-gauge circle{fill:none;stroke:var(--line);stroke-width:10}
.wpx-gauge .wpx-gauge-v{stroke:#10B981;stroke-linecap:round;stroke-dasharray:calc(var(--v) * 1) 100}
.wpx-gauge .fillbar{animation-name:wpgauge}
@keyframes wpgauge{from{stroke-dasharray:0 100}}
.wpx-gauge div{display:flex;flex-direction:column;gap:6px}
.wpx-gauge strong{font-size:44px;font-weight:900;line-height:1;color:#10B981}
.wpx-gauge span{font-size:11.5px;color:var(--t3)}
.wpx-std-r{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.wpx-std-item{display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}
.wpx-std-item>span{font-size:12px;color:var(--accent-t);padding-top:4px}
.wpx-std-item div{display:flex;flex-direction:column;gap:8px}
.wpx-std-item h3{font-size:20px}
.wpx-std-item p{font-size:15px;line-height:1.75;color:var(--t2)}

/* process */
.wpx-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:12px;counter-reset:st}
.wpx-steps li{position:relative;display:flex;flex-direction:column;gap:10px;padding:22px 18px 24px;border-radius:20px;background:var(--card);border:1px solid var(--line);counter-increment:st}
.wpx-steps li::before{content:counter(st,decimal-leading-zero);font-size:34px;font-weight:900;line-height:1;color:var(--why-no)}
.wpx-steps li::after{content:"";position:absolute;top:38px;right:-13px;width:14px;height:2px;background:var(--line2)}
.wpx-steps li:last-child::after{display:none}
.wpx-steps li:last-child{background:var(--accent);border-color:var(--accent);color:#FFFFFF}
.wpx-steps li:last-child::before{color:rgba(255,255,255,.4)}
.wpx-steps li:last-child p,.wpx-steps li:last-child .wpx-wk{color:rgba(255,255,255,.8)}
.wpx-wk{font-size:11.5px;color:var(--accent-t)}
.wpx-steps b{font-size:17px}
.wpx-steps p{font-size:13.5px;line-height:1.7;color:var(--t2)}

/* after launch */
.wpx-after{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.wpx-after-card{border-radius:28px;padding:36px 34px;display:flex;flex-direction:column;gap:16px}
.wpx-after-card h3{font-size:26px}
.wpx-after-card>p{font-size:16px;line-height:1.75;color:var(--t2);margin-bottom:6px}
.wpx-after-hl{color:#FFFFFF;background:radial-gradient(ellipse 70% 80% at 100% 0%,rgba(92,178,255,.35),transparent 65%),linear-gradient(135deg,#0A1B52,#123A9E);box-shadow:0 50px 100px -50px rgba(18,58,158,.9);border:1px solid rgba(124,192,255,.3)}
.wpx-after-hl>p{color:rgba(255,255,255,.72)}
.wpx-after-hl .wpx-tag{color:#BFDCFF;background:rgba(255,255,255,.1)}
.wpx-after-hl .wpx-check li::before{background-color:#FFFFFF;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E")}

/* faq */
.wpx-faq-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr);gap:64px;align-items:start}
.wpx-faq-l{position:sticky;top:120px;display:flex;flex-direction:column;gap:18px}
.wpx-faq-l h2{font-size:clamp(30px,3.3vw,46px)}
.wpx-faq-l>p{font-size:16px;line-height:1.8;color:var(--t2)}
.wpx-faq{display:flex;flex-direction:column;gap:12px}
.wpx-faq details{border-radius:20px;border:1px solid var(--line);background:var(--card);transition:border-color .3s,box-shadow .3s}
.wpx-faq details[open]{border-color:var(--accent-line);box-shadow:0 30px 60px -36px var(--accent-glow)}
.wpx-faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 24px;font-size:17px;font-weight:700}
.wpx-faq summary::-webkit-details-marker{display:none}
.wpx-faq summary::after{content:"+";flex:none;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:400;color:var(--accent-t);background:var(--accent-soft);transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.wpx-faq details[open] summary::after{transform:rotate(45deg)}
.wpx-faq details p{padding:0 24px 24px;font-size:15px;line-height:1.85;color:var(--t2);animation:fin .45s cubic-bezier(.2,.7,.2,1) both}

/* fit / not fit (two columns) */
.wpx-yn{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.wpx-yn-c{border-radius:28px;padding:34px 32px;display:flex;flex-direction:column;gap:20px}
.wpx-yn-c h3{font-size:22px;display:flex;align-items:center;gap:12px}
.wpx-yes,.wpx-no{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px}
.wpx-yes{color:#FFFFFF;background:var(--accent)}
.wpx-no{color:var(--acc);background:var(--icon)}
.wpx-yn-c ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.wpx-yn-c li{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 16px;padding:16px 0;border-top:1px solid var(--line);font-size:15.5px;font-weight:600}
.wpx-yn-c li a{font-size:13.5px;font-weight:700}
.wpx-yn-c li a::after{content:" →"}

/* ===== v2 building blocks: statement band, scroll-pinned demo, dark band, gantt ===== */
.spx-kicker{display:flex;flex-direction:column;gap:16px;margin-bottom:56px;max-width:760px}
.spx-center{align-items:center;text-align:center;margin-left:auto;margin-right:auto}
.spx-legend{display:flex;flex-wrap:wrap;justify-content:center;gap:24px;margin-top:28px;font-size:12px;color:var(--t3)}
.spx-legend span{display:flex;align-items:center;gap:8px}
.spx-legend i{width:22px;height:8px;border-radius:3px;background:var(--line2)}
.spx-legend i.on{background:var(--accent-grad)}
/* statement band: one big sentence instead of another card grid */
.spx-statement{padding:150px 0 130px;background:var(--bg)}
.spx-statement::before{background:radial-gradient(ellipse 50% 60% at 85% 70%,var(--accent-soft),transparent 70%)}
.spx-big{margin:0;font-size:clamp(30px,4.6vw,68px);line-height:1.22;font-weight:900;letter-spacing:-.03em;color:var(--dim);max-width:1100px}
.spx-big-2{margin-top:18px;color:var(--t1)}
.spx-strike{position:relative;white-space:nowrap}
.spx-strike::after{content:"";position:absolute;left:-2%;right:-2%;top:54%;height:.09em;border-radius:1em;background:var(--accent);transform-origin:left;animation:spxstrike linear both;animation-timeline:view();animation-range:entry 60% cover 40%}
@keyframes spxstrike{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.spx-hl{background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
/* scrolly funnel: the phone stays pinned, the steps scroll past it */
.spx-scrolly-sec{padding:120px 0 40px}
.spx-scrolly{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px}
.spx-stick{position:sticky;top:calc(50vh - 300px);height:600px;display:flex;align-items:center;justify-content:center;gap:28px}
.spx-stick::before{content:"";position:absolute;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,var(--accent-soft),transparent 65%);z-index:-1}
.spx-dots{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.spx-dots li{width:8px;height:8px;border-radius:999px;background:var(--line2);transition:height .4s,background .4s}
.spx-dots li.on{height:30px;background:var(--accent)}
.spx-steps{display:flex;flex-direction:column}
.spx-step{min-height:78vh;display:flex;flex-direction:column;justify-content:center;gap:16px;opacity:.28;transition:opacity .5s}
.spx-step.on{opacity:1}
.spx-num{font-size:clamp(80px,9vw,128px);font-weight:900;line-height:.8;letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1.5px var(--accent)}
.spx-step small{font-size:13px;color:var(--accent-t)}
.spx-step h3{font-size:clamp(30px,3.4vw,50px);line-height:1.15;letter-spacing:-.02em;font-weight:900}
.spx-step p{font-size:17px;line-height:1.8;color:var(--t2);max-width:440px}
.spx-chips{display:flex;flex-wrap:wrap;gap:8px}
.spx-chips span{font-size:13px;font-weight:700;padding:8px 14px;border-radius:999px;color:var(--accent-t);background:var(--accent-soft);border:1px solid var(--accent-line)}
.spx-shot{display:none}
/* full-bleed dark band (same in both themes) */
.spx-dark{position:relative;isolation:isolate;padding:130px 0;color:#FFFFFF;background:var(--dk-bg,#0B1220);--card:var(--dk-card,#121B2E);--panel:var(--dk-card,#121B2E);--line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.16);--shadow:rgba(0,0,0,.6);--t1:#FFFFFF;--t2:rgba(255,255,255,.66);--t3:rgba(255,255,255,.5);--accent-t:var(--dk-acc,#7CC0FF);--accent-line:var(--dk-line,rgba(124,192,255,.4));--accent-soft:var(--dk-soft,rgba(124,192,255,.12))}
.spx-dark::before{background:radial-gradient(ellipse 45% 60% at 78% 50%,var(--dk-glow1,rgba(37,99,235,.25)),transparent 70%),radial-gradient(ellipse 40% 50% at 0% 0%,var(--dk-glow2,rgba(124,58,237,.2)),transparent 70%)}
.spx-dark::after{background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(ellipse 60% 70% at 75% 50%,#000,transparent 75%);mask-image:radial-gradient(ellipse 60% 70% at 75% 50%,#000,transparent 75%)}
.spx-dark h2{margin:0;font-size:clamp(32px,4vw,54px);line-height:1.15;font-weight:900;letter-spacing:-.02em}
.spx-dark p{margin:0;font-size:16px;line-height:1.8;color:rgba(255,255,255,.66);max-width:480px}
.spx-dark-eyebrow{font-size:13px;color:var(--accent-t)}
.spx-toggle{align-self:flex-start;display:flex;padding:5px;border-radius:999px;background:var(--soft);border:1px solid var(--line2)}
.spx-toggle button{font:inherit;font-size:14px;font-weight:700;padding:10px 22px;border:0;border-radius:999px;background:none;color:var(--t2);cursor:pointer;transition:background .3s,color .3s}
.spx-toggle button[aria-checked="true"]{background:var(--accent);color:#FFFFFF;box-shadow:0 8px 20px -8px var(--accent-glow)}
.spx-note{font-size:11.5px;color:var(--t3)}
/* gantt timeline */
.spx-gantt{border-radius:28px;border:1px solid var(--line);background:var(--card);padding:10px 24px 18px;overflow:hidden}
.spx-g-head,.spx-g-row{display:grid;grid-template-columns:220px repeat(var(--cols,6),minmax(0,1fr));align-items:center}
.spx-g-head span{padding:14px 0;font-family:'JetBrains Mono',ui-monospace,monospace;font-size:12px;color:var(--t3);border-left:1px dashed var(--line2);padding-left:10px}
.spx-g-head span:first-child{border-left:0}
.spx-g-row{min-height:58px;border-top:1px solid var(--line)}
.spx-g-row span{font-size:14.5px;font-weight:700;grid-column:1}
.spx-g-row i{grid-row:1;height:26px;margin:0 4px;border-radius:999px;background:var(--accent-grad);box-shadow:0 10px 20px -10px var(--accent-glow)}
.spx-g-launch i{background:repeating-linear-gradient(45deg,var(--accent) 0 8px,color-mix(in srgb,var(--accent) 70%,#FFFFFF) 8px 16px)}

@media (max-width:900px){
  .spx-scrolly{grid-template-columns:minmax(0,1fr)}
  .spx-stick{display:none}
  .spx-step{min-height:0;opacity:1;padding:36px 0;border-top:1px solid var(--line)}
  .spx-shot{display:block;margin:8px 0 4px}
}
@media (max-width:640px){
  .spx-statement{padding:100px 0 90px}
  .spx-num{font-size:72px}
  .spx-dark{padding:90px 0}
  .spx-gantt{padding:6px 14px 14px}
  .spx-g-head,.spx-g-row{grid-template-columns:96px repeat(var(--cols,6),minmax(0,1fr))}
  .spx-g-row span{font-size:12px;line-height:1.35;padding-right:6px}
  .spx-g-head span{font-size:10px;padding-left:4px}
  .spx-g-row i{height:18px;margin:0 2px}
}
@media (prefers-reduced-motion:reduce){.spx-strike::after{animation:none;transform:none}}

/* responsive */
@media (max-width:1100px){
  .wpx-fit-grid,.wpx-stack{grid-template-columns:repeat(2,minmax(0,1fr))}
  .wpx-steps{grid-template-columns:repeat(4,minmax(0,1fr))}
  .wpx-steps li::after{display:none}
  .wpx-not{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:900px){
  .wpx-hero-grid,.wpx-tpanel,.wpx-std,.wpx-faq-grid{grid-template-columns:minmax(0,1fr)}
  .wpx-std-l,.wpx-faq-l{position:static}
  .wpx-facts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .wpx-facts>div:nth-child(3){border-left:0;padding-left:0}
  .wpx-facts>div:nth-child(n+3){border-top:1px solid var(--line)}
  .wpx-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}
  .wpx-after,.wpx-yn{grid-template-columns:minmax(0,1fr)}
  .wpx-mock{margin:0 18px}
}
@media (max-width:640px){
  .wpx-pad{padding:84px 0}
  .wpx-hero{padding-top:104px}
  .wpx-fit-grid,.wpx-stack,.wpx-not ul{grid-template-columns:minmax(0,1fr)}
  .wpx-steps{grid-template-columns:minmax(0,1fr)}
  .wpx-steps li{display:grid;grid-template-columns:44px minmax(0,1fr);gap:4px 12px;padding:18px}
  .wpx-steps li::before{grid-row:1/span 3;font-size:26px}
  .wpx-facts>div{padding:22px 14px}
  .wpx-facts>div:nth-child(odd){padding-left:0}
  .wpx-facts strong{font-size:30px}
  .wpx-win-body{grid-template-columns:minmax(0,1fr);min-height:0}
  .wpx-ts-row span{font-size:10px;padding:8px 7px}
  .wpx-panel{display:none}
  .wpx-f1{left:-12px}.wpx-f2{right:-10px}.wpx-f3{display:none}
  .wpx-tabs button{font-size:14px;padding:14px}
  .wpx-tr{grid-template-columns:minmax(0,.7fr) minmax(0,1fr) minmax(0,1fr)}
  .wpx-tr span{padding:14px 10px;font-size:13px}
  .wpx-tr .win::before{display:none}
  .wpx-ts-pop{right:6px}
  .wpx-ts-grid{grid-template-columns:repeat(2,1fr)}
  .wpx-after-card,.wpx-yn-c{padding:28px 22px}
}
@media (prefers-reduced-motion:reduce){.wpx-drag-src,.wpx-drop,.wpx-float,.wpx-ts-pop,.wpx-tpanel{animation:none!important;opacity:1;transform:none}}

/* Desktop section rhythm: sections were padded 110–150px top and bottom, which left 220–300px of empty
   space between neighbours. Generated from measuring every page: only sections padded over 100px are
   tightened (heroes, pinned scroll sections' small paddings and phones are left alone). */
@media (min-width:761px){
  #ab-beliefs,#ab-fit,#ab-orbit,#ab-standard,#ab-team,#ad-ab,#ad-budget,#ad-faq,#ad-funnel,#ad-log,#ad-track,#b2b-faq,#b2b-form,#b2b-lang,#b2b-pipe,#b2b-process,#b2b-seo,#b2b-trust,#b2c-calc,#b2c-cats,#b2c-faq,#b2c-match,#b2c-season,#b2c-statement,#b2c-ugc,#bb-faq,#bb-flow,#bb-onboard,#bb-platform,#bb-roles,#bb-tiers,#bd-apps,#bd-book,#bd-faq,#bd-logo,#bd-process,#bd-system,#ct-faq,#ct-next,#d2c-community,#d2c-data,#d2c-faq,#d2c-identity,#d2c-process,#d2c-product,#d2c-scope,#d2c-story,#dv-after,#dv-flow,#dv-kit,#dv-launch,#em-deliv,#em-faq,#em-flow,#em-metrics,#em-scope,#em-seg,#em-tpl,#gr-cadence,#gr-stages,#hs-backup,#hs-edge,#hs-faq,#hs-mon,#hs-sec,#hs-speed,#op-deal,#op-faq,#op-plans,#op-report,#op-scope,#op-team,#op-week,#pf-cases,#pf-included,#pf-pick,#pf-shelf,#pg-how,#pg-matrix,#pg-quiz,#rd-board,#rd-faq,#rd-map,#rd-night,#rd-plan,#rd-route,#rd-seo,#seo-audit,#seo-cal,#seo-faq,#seo-links,#seo-loop,#seo-map,#seo-rhythm,#sl-bound,#sl-compare,#sl-faq,#sl-fit,#sl-process,#sl-promo,#sl-scope,#sl-skins,#sl-special,#slv-statement,#sp-approach,#sp-apps,#sp-china,#sp-faq,#sp-fit,#sp-growth,#sp-layers,#sp-process,#spl-deps,#spl-faq,#spl-fit,#spl-member,#spl-migrate,#spl-process,#spl-statement,#spp-accept,#spp-faq,#spp-fit,#spp-grow,#spp-lean,#spp-onepage,#spp-process,#spp-statement,#spx-statement,#syy-faq,#syy-fit,#syy-niche,#syy-process,#syy-reuse,#syy-statement,#syy-support,#syy-tools,#wp-after,#wp-compare,#wp-faq,#wp-fit,#wp-process,#wp-stack,#wp-standard,#wp-types,#wpv-statement,#wx-canvas,#wx-faq,#wx-fit,#wx-own,#wx-process,#wx-resp,#wx-statement,#wx-uses{padding-top:88px;padding-bottom:88px}
  #sl-test,#sp-funnel,#spl-sync,#spp-journey,#syy-matrix,#wp-build,#wx-make{padding-top:88px}
  #fq-ask,#fq-list,#gr-ask,#pf-cta{padding-bottom:88px}
  /* the shared contact block at the end of each page */
  section#contact[style]{padding-top:80px!important;padding-bottom:110px!important}
  /* closing call-to-action cards that sit right above the contact block */
  #gr-ask,#pf-cta,#fq-ask,#sl-next,#ct-faq{padding-bottom:40px}
}

/* D2C 自有品牌 solution page: a "brand book" — numbered chapters, editorial spacing,
   in the homepage brand system (blue #2563EB, navy panels, white cards). */
.pc{--accent:#2563EB;--accent-t:#1D4ED8;--accent-soft:rgba(37,99,235,.08);--accent-line:rgba(37,99,235,.28);--accent-glow:rgba(37,99,235,.45);--accent-grad:linear-gradient(100deg,#1D4ED8,#2563EB 45%,#5CB2FF);--card-hb:rgba(37,99,235,.35);
  --bk-sh:0 30px 70px -40px rgba(37,99,235,.35),0 2px 6px -2px rgba(11,18,32,.06);--bk-serif:'Iowan Old Style','Palatino Linotype',Georgia,'Songti SC',serif;--bk-ok:#0EA5A4}
html:not([data-theme="light"]) .pc{--accent:#3B82F6;--accent-t:#7CC0FF;--accent-soft:rgba(124,192,255,.1);--accent-line:rgba(124,192,255,.3);--accent-glow:rgba(59,130,246,.5);--accent-grad:linear-gradient(100deg,#7CC0FF,#5CB2FF 45%,#3B82F6);--bk-sh:0 30px 70px -40px rgba(0,0,0,.8);--bk-ok:#2DD4BF}

.bk-wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.bk-sec{padding:120px 0;background:var(--bg);color:var(--t1)}
.bk-sec.bk-alt{background:var(--bg2)}
.bk-sec::before{background:radial-gradient(ellipse 40% 45% at 100% 0%,var(--glowA),transparent 70%),radial-gradient(ellipse 35% 40% at 0% 100%,var(--glowC),transparent 70%)}
.bk-sec.bk-alt::before{background:radial-gradient(ellipse 45% 50% at 0% 0%,var(--glowA),transparent 70%),radial-gradient(ellipse 40% 45% at 100% 100%,var(--glowB),transparent 70%)}
.bk-sec h2,.bk-hero h1{margin:0}
.bk-sec p{margin:0}

/* chapter opener: big outlined numeral + serif English line + title */
.bk-ch{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 36px;align-items:end;margin-bottom:56px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.bk-ch-n{font-size:clamp(88px,11vw,160px);font-weight:900;line-height:.78;letter-spacing:-.06em;color:transparent;-webkit-text-stroke:1.5px var(--accent-line);background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;opacity:.9}
.bk-ch>div{display:flex;flex-direction:column;gap:12px;max-width:720px}
.bk-ch-en{font-family:var(--bk-serif);font-size:16px;color:var(--accent-t);letter-spacing:.02em}
.bk-ch-en i{font-style:italic}
.bk-ch h2{font-size:clamp(34px,4.2vw,58px);font-weight:900;line-height:1.1;letter-spacing:-.025em}
.bk-ch p{font-size:16.5px;line-height:1.85;color:var(--t2)}

/* chapter rail (built by page.js, desktop only) */
.bk-rail{position:fixed;left:24px;top:50%;z-index:40;transform:translateY(-50%) translateX(-12px);display:flex;flex-direction:column;gap:6px;padding:14px 10px;border-radius:20px;background:var(--glass);backdrop-filter:blur(16px);border:1px solid var(--line2);box-shadow:var(--bk-sh);opacity:0;pointer-events:none;transition:opacity .4s,transform .5s cubic-bezier(.2,.7,.2,1)}
.bk-rail.show{opacity:1;transform:translateY(-50%);pointer-events:auto}
.bk-rail a{display:flex;align-items:center;gap:10px;padding:7px 10px;border-radius:12px;font-size:12.5px;color:var(--t3);white-space:nowrap;transition:background .3s,color .3s}
.bk-rail a span{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:11px;width:20px}
.bk-rail a b{font-weight:600;max-width:0;overflow:hidden;opacity:0;transition:max-width .4s,opacity .3s}
.bk-rail:hover a b,.bk-rail a.on b{max-width:120px;opacity:1}
.bk-rail a.on{color:#FFFFFF;background:var(--accent)}
.bk-rail a:hover{color:var(--t1)}
.bk-rail a.on:hover{color:#FFFFFF}
@media (max-width:1279px){.bk-rail{display:none}}

/* hero: centred manifesto, the packaging box, a table of contents */
.bk-hero{position:relative;overflow:hidden;padding:120px 0 90px;background:var(--bg);color:var(--t1);text-align:center}
.bk-hero::before{background:radial-gradient(ellipse 45% 40% at 50% 62%,var(--glowA),transparent 70%),radial-gradient(ellipse 30% 35% at 12% 10%,var(--glowB),transparent 70%),radial-gradient(ellipse 30% 35% at 90% 20%,var(--glowC),transparent 70%)}
.bk-hero::after{background-image:radial-gradient(var(--dotc) 1.2px,transparent 1.5px);background-size:22px 22px;-webkit-mask-image:radial-gradient(ellipse 50% 45% at 50% 60%,#000,transparent 75%);mask-image:radial-gradient(ellipse 50% 45% at 50% 60%,#000,transparent 75%);opacity:.6}
.bk-hero-in{display:flex;flex-direction:column;align-items:center;gap:22px}
.bk-crumb{display:flex;gap:8px;font-size:12.5px;color:var(--t3)}
.bk-crumb a{color:var(--t3)}.bk-crumb a:hover{color:var(--t1)}
.bk-crumb b{font-weight:500;color:var(--t1)}
.bk-vol{font-size:12px;letter-spacing:.18em;color:var(--accent-t);padding:7px 14px;border-radius:999px;border:1px solid var(--accent-line);background:var(--accent-soft)}
.bk-h1{font-size:clamp(34px,5.4vw,78px);line-height:1.12;font-weight:900;letter-spacing:-.035em}
.bk-h1 span{white-space:nowrap}
.bk-h1 em{font-style:normal;background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
/* scope: what we do, optional growth services, what stays with the client */
.bk-scope{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr) minmax(0,1fr);gap:18px;align-items:stretch}
.bk-sc{display:flex;flex-direction:column;gap:12px;min-width:0;padding:28px;border-radius:28px;background:var(--card);border:1px solid var(--line);box-shadow:var(--bk-sh)}
.bk-sc small{font-size:11px;color:var(--accent-t)}
.bk-sc h3{margin:0;font-family:var(--bk-serif);font-size:26px;font-weight:700}
.bk-sc ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.bk-sc li{position:relative;padding-left:20px;font-size:15px;line-height:1.7;color:var(--t2)}
.bk-sc li::before{content:"";position:absolute;left:2px;top:.75em;width:8px;height:2px;background:var(--accent)}
.bk-sc p{margin:auto 0 0;font-size:13px;line-height:1.7;color:var(--t3)}
.bk-sc-main{color:#FFFFFF;background:radial-gradient(ellipse 70% 60% at 100% 0%,rgba(92,178,255,.35),transparent 65%),linear-gradient(140deg,#0A1B52,#123A9E);border-color:transparent}
.bk-sc-main small{color:#7CC0FF}
.bk-sc-main li{color:rgba(255,255,255,.85)}
.bk-sc-main li::before{background:#7CC0FF}
.bk-sc-links li{padding-left:0}
.bk-sc-links li::before{display:none}
.bk-sc-links a{display:flex;flex-direction:column;gap:2px;padding:10px 14px;border-radius:14px;background:var(--soft);font-weight:800;color:var(--t1);transition:background .25s}
.bk-sc-links a:hover{color:var(--t1);background:var(--accent-soft)}
.bk-sc-links a span{font-size:12.5px;font-weight:500;color:var(--t3)}
@media (max-width:980px){.bk-scope{grid-template-columns:minmax(0,1fr)}}
.bk-lead{max-width:680px;font-size:17.5px;line-height:1.85;color:var(--t2)}
.bk-ctas{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.bk-btn{display:inline-flex;align-items:center;gap:10px;background:var(--accent);color:#FFFFFF;font-size:16px;font-weight:700;padding:17px 28px;border-radius:999px;box-shadow:0 0 0 1px var(--accent-line),0 18px 44px -14px var(--accent-glow);transition:transform .3s cubic-bezier(.2,.7,.2,1)}
.bk-btn:hover{color:#FFFFFF;transform:translateY(-2px)}
.bk-btn-g{display:inline-flex;align-items:center;font-size:16px;font-weight:700;padding:16px 26px;border-radius:999px;color:var(--t1);border:1px solid var(--line2);background:var(--glass);backdrop-filter:blur(10px)}
.bk-btn-g:hover{color:var(--accent-t)}

.bk-stage{position:relative;width:100%;max-width:760px;height:400px;margin-top:10px;perspective:1300px}
.bk-plate{position:absolute;left:50%;bottom:30px;width:420px;height:80px;margin-left:-210px;border-radius:50%;background:radial-gradient(ellipse at center,rgba(37,99,235,.28),transparent 70%);filter:blur(6px)}
.bk-tilt{position:absolute;left:50%;top:50%;width:0;height:0;transform-style:preserve-3d;transform:rotateX(var(--rx,-14deg)) rotateY(var(--ry,0deg));transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.bk-box{position:absolute;transform-style:preserve-3d;animation:bkturn 22s linear infinite;--w:190px;--h:250px;--d:120px}
@keyframes bkturn{from{transform:rotateY(0deg)}to{transform:rotateY(360deg)}}
.bk-f{position:absolute;display:flex;flex-direction:column;justify-content:space-between;padding:20px;color:#FFFFFF;backface-visibility:hidden;border:1px solid rgba(255,255,255,.14)}
.bk-front,.bk-back{width:var(--w);height:var(--h);left:calc(var(--w) / -2);top:calc(var(--h) / -2)}
.bk-right,.bk-left{width:var(--d);height:var(--h);left:calc(var(--d) / -2);top:calc(var(--h) / -2)}
.bk-top,.bk-bottom{width:var(--w);height:var(--d);left:calc(var(--w) / -2);top:calc(var(--d) / -2)}
.bk-front{transform:translateZ(calc(var(--d) / 2));background:radial-gradient(ellipse 80% 60% at 80% 10%,rgba(92,178,255,.55),transparent 65%),linear-gradient(160deg,#123A9E,#0A1B52)}
.bk-back{transform:rotateY(180deg) translateZ(calc(var(--d) / 2));background:linear-gradient(160deg,#0A1B52,#0B1530)}
.bk-right{transform:rotateY(90deg) translateZ(calc(var(--w) / 2));background:linear-gradient(180deg,#1D4ED8,#123A9E)}
.bk-left{transform:rotateY(-90deg) translateZ(calc(var(--w) / 2));background:linear-gradient(180deg,#0E2A78,#0A1B52);align-items:center;justify-content:center}
.bk-top{transform:rotateX(90deg) translateZ(calc(var(--h) / 2));background:linear-gradient(135deg,#2563EB,#123A9E);align-items:center;justify-content:center}
.bk-bottom{transform:rotateX(-90deg) translateZ(calc(var(--h) / 2));background:#0A1B52}
.bk-logo{font-family:var(--bk-serif);font-size:22px;letter-spacing:.14em;text-align:left}
.bk-logo i{font-style:normal;color:#7CC0FF;margin:0 2px}
.bk-sm{writing-mode:vertical-rl;font-size:16px}
.bk-f small{font-size:9.5px;letter-spacing:.18em;opacity:.7;text-align:left}
.bk-f b{font-size:22px;line-height:1.15;text-align:left}
.bk-pat{flex:1;border-radius:10px;background:radial-gradient(circle,rgba(255,255,255,.22) 1.4px,transparent 1.8px) 0 0/14px 14px,linear-gradient(135deg,rgba(124,192,255,.25),transparent)}
.bk-pat2{background:repeating-linear-gradient(45deg,rgba(255,255,255,.14) 0 2px,transparent 2px 10px)}
.bk-right b{font-size:12px;letter-spacing:.12em;margin-top:12px}
.bk-seal{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;border:1.5px solid rgba(255,255,255,.6)}
.bk-tag{position:absolute;font-size:11.5px;padding:8px 14px;border-radius:999px;background:var(--card);color:var(--t2);border:1px solid var(--line2);box-shadow:var(--bk-sh);animation:bkfloat 6s ease-in-out infinite alternate}
.bk-tag::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-right:8px;vertical-align:1px}
.bk-tag1{left:4%;top:24%}.bk-tag2{right:2%;top:38%;animation-delay:-2s}.bk-tag3{left:12%;bottom:12%;animation-delay:-4s}
@keyframes bkfloat{from{transform:translateY(-6px)}to{transform:translateY(6px)}}

.bk-toc{list-style:none;margin:6px 0 0;padding:0;width:100%;max-width:820px;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;text-align:left}
.bk-toc a{display:flex;flex-direction:column;gap:6px;height:100%;padding:16px;border-radius:18px;background:var(--card);border:1px solid var(--line);color:var(--t1);font-size:15px;font-weight:700;box-shadow:var(--bk-sh);transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .3s}
.bk-toc a:hover{transform:translateY(-4px);border-color:var(--accent-line);color:var(--t1)}
.bk-toc span{font-size:11px;color:var(--accent-t)}
.bk-toc i{flex:1;border-bottom:1px dashed var(--line2);min-height:6px}
.bk-toc em{font-style:normal;font-size:10.5px;color:var(--t3)}

/* ch.01 founder timeline */
.bk-tl{border-radius:32px;padding:28px 0 22px;background:var(--card);border:1px solid var(--line);box-shadow:var(--bk-sh);overflow:hidden}
.bk-tl-head{display:flex;justify-content:space-between;align-items:center;padding:0 28px 18px;font-size:11.5px;color:var(--t3)}
.bk-tl-nav{display:flex;gap:8px}
.bk-tl-nav button{font:inherit;width:40px;height:40px;border-radius:50%;border:1px solid var(--line2);background:var(--soft);color:var(--t1);cursor:pointer;transition:background .3s,color .3s}
.bk-tl-nav button:hover{background:var(--accent);color:#FFFFFF;border-color:transparent}
.bk-tl-track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 28px 18px;scrollbar-width:none;outline:none}
.bk-tl-track::-webkit-scrollbar{display:none}
.bk-tl-i{position:relative;flex:none;width:300px;scroll-snap-align:start;display:flex;flex-direction:column;gap:10px;padding:26px 24px 24px;border-radius:24px;background:var(--panel);border:1px solid var(--line);transition:transform .4s cubic-bezier(.2,.7,.2,1),border-color .3s}
.bk-tl-i::before{content:"";position:absolute;left:24px;right:-18px;top:-1px;height:3px;background:linear-gradient(90deg,var(--accent),transparent)}
.bk-tl-i:hover{transform:translateY(-4px);border-color:var(--accent-line)}
.bk-tl-i span{font-size:13px;color:var(--accent-t)}
.bk-tl-i b{font-size:22px;font-weight:900}
.bk-tl-i p{font-size:14.5px;line-height:1.75;color:var(--t2)}
.bk-tl-now{color:#FFFFFF;background:radial-gradient(ellipse 80% 70% at 100% 0%,rgba(92,178,255,.4),transparent 65%),linear-gradient(150deg,#0A1B52,#123A9E);border-color:transparent}
.bk-tl-now span{color:#7CC0FF}.bk-tl-now p{color:rgba(255,255,255,.75)}
.bk-tl-bar{margin:0 28px;height:4px;border-radius:999px;background:var(--line)}
.bk-tl-bar i{display:block;height:100%;width:var(--p,20%);border-radius:999px;background:var(--accent-grad);transition:width .3s}

/* ch.02 brand tone switcher */
.bk-id{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:28px;align-items:center;
  --m-bg:#F4F7FC;--m-ink:#0B1530;--m-acc:#2563EB;--m-hero:linear-gradient(135deg,#0B1530,#123A9E);--m-prod:linear-gradient(160deg,#EEF4FF,#BFD3F5);--m-font:'Plus Jakarta Sans','MiSans',sans-serif;--m-r:14px;--s1:#0B1530;--s2:#2563EB;--s3:#BFD3F5;--s4:#EEF4FF}
.bk-id[data-tone="warm"]{--m-bg:#F6F1EA;--m-ink:#3F362C;--m-acc:#8A7560;--m-hero:linear-gradient(135deg,#6B5B4A,#A8957F);--m-prod:linear-gradient(160deg,#F6F1EA,#D9CDBE);--m-font:var(--bk-serif);--m-r:24px;--s1:#3F362C;--s2:#8A7560;--s3:#D9CDBE;--s4:#F6F1EA}
.bk-id[data-tone="tech"]{--m-bg:#0F172A;--m-ink:#E2E8F0;--m-acc:#14B8A6;--m-hero:linear-gradient(135deg,#0F172A,#134E4A);--m-prod:linear-gradient(160deg,#1E293B,#0F766E);--m-font:'JetBrains Mono',ui-monospace,monospace;--m-r:8px;--s1:#0F172A;--s2:#14B8A6;--s3:#334155;--s4:#E2E8F0}
.bk-id-side{display:flex;flex-direction:column;gap:18px}
.bk-tones{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;padding:6px;border-radius:20px;background:var(--card);border:1px solid var(--line)}
.bk-tones button{font:inherit;display:flex;flex-direction:column;gap:2px;padding:14px 10px;border-radius:15px;border:0;background:none;color:var(--t2);cursor:pointer;transition:background .3s,color .3s,box-shadow .3s}
.bk-tones b{font-size:16px}
.bk-tones small{font-size:11px;color:var(--t3)}
.bk-tones button[aria-checked="true"]{background:var(--accent);color:#FFFFFF;box-shadow:0 12px 26px -12px var(--accent-glow)}
.bk-tones button[aria-checked="true"] small{color:rgba(255,255,255,.75)}
.bk-spec{display:flex;flex-direction:column;gap:16px;padding:24px;border-radius:24px;background:var(--card);border:1px solid var(--line);box-shadow:var(--bk-sh)}
.bk-sw,.bk-type{display:flex;align-items:center;gap:10px}
.bk-sw span,.bk-type span{font-size:11px;color:var(--t3);width:70px}
.bk-sw i{width:38px;height:38px;border-radius:12px;box-shadow:inset 0 0 0 1px rgba(11,18,32,.08);transition:background .5s}
.bk-sw .s1{background:var(--s1)}.bk-sw .s2{background:var(--s2)}.bk-sw .s3{background:var(--s3)}.bk-sw .s4{background:var(--s4)}
.bk-aa{font-family:var(--m-font);font-size:40px;line-height:1;transition:font-family .3s}
.bk-type small{font-size:12.5px;color:var(--t2)}
.bk-tone-d{font-size:14.5px;line-height:1.75;color:var(--t2)}
.bk-mock{border-radius:28px;padding:16px;background:var(--m-bg);color:var(--m-ink);box-shadow:0 50px 90px -50px rgba(11,18,32,.45),0 0 0 1px var(--line);transition:background .6s,color .6s}
.bk-m-bar{display:flex;align-items:center;gap:12px;padding:4px 6px 14px;font-size:13px}
.bk-m-logo{font-family:var(--m-font);letter-spacing:.14em;margin-right:auto}
.bk-m-bar i{width:34px;height:5px;border-radius:3px;background:currentColor;opacity:.18}
.bk-m-bar em{font-style:normal;font-size:12px;font-weight:700}
.bk-m-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:16px;align-items:center;padding:28px;min-height:230px;border-radius:calc(var(--m-r) + 8px);background:var(--m-hero);color:#FFFFFF;transition:background .6s,border-radius .6s}
.bk-m-hero>div{display:flex;flex-direction:column;gap:12px}
.bk-m-hero small{font-size:10.5px;letter-spacing:.16em;opacity:.75}
.bk-m-t{font-family:var(--m-font);font-size:clamp(22px,2.4vw,32px);line-height:1.15}
.bk-m-cta{align-self:flex-start;font-size:12.5px;font-weight:700;padding:10px 18px;border-radius:var(--m-r);background:#FFFFFF;color:var(--m-ink);transition:border-radius .6s}
.bk-m-prod{justify-self:center;width:min(100%,150px);aspect-ratio:3/4;border-radius:calc(var(--m-r) + 14px) calc(var(--m-r) + 14px) var(--m-r) var(--m-r);background:var(--m-prod);box-shadow:0 30px 40px -24px rgba(0,0,0,.5);transition:all .6s}
.bk-m-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:12px}
.bk-m-row span{display:flex;align-items:center;gap:8px;padding:12px;border-radius:var(--m-r);font-size:12px;font-weight:700;background:color-mix(in srgb,var(--m-ink) 6%,transparent);transition:border-radius .6s}
.bk-m-row i{width:12px;height:12px;border-radius:50%;background:var(--m-acc);transition:background .6s}
.bk-swap .bk-m-hero>div{animation:fin .55s cubic-bezier(.2,.7,.2,1) both}

/* ch.03 product page anatomy */
.bk-ana{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);gap:32px;align-items:center}
.bk-pp{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;padding:20px;border-radius:32px;background:var(--card);border:1px solid var(--line);box-shadow:var(--bk-sh)}
.bk-pp-img{position:relative;aspect-ratio:4/5;border-radius:22px;background:radial-gradient(ellipse 60% 50% at 50% 70%,rgba(37,99,235,.18),transparent 70%),linear-gradient(160deg,#EEF4FF,#DCE8FF);display:flex;align-items:center;justify-content:center}
html:not([data-theme="light"]) .bk-pp-img{background:radial-gradient(ellipse 60% 50% at 50% 70%,rgba(124,192,255,.18),transparent 70%),linear-gradient(160deg,#13213D,#0C1529)}
.bk-pp-bottle{width:34%;aspect-ratio:1/2;border-radius:40% 40% 18% 18%/18% 18% 10% 10%;background:linear-gradient(90deg,#123A9E,#2563EB 45%,#5CB2FF 60%,#123A9E);box-shadow:0 30px 40px -20px rgba(18,58,158,.6);position:relative}
.bk-pp-bottle::before{content:"";position:absolute;left:30%;right:30%;top:-16%;height:18%;border-radius:8px 8px 4px 4px;background:#0A1B52}
.bk-pp-info{position:relative;display:flex;flex-direction:column;gap:14px;padding:8px 4px}
.bk-pp-info small{font-size:10.5px;color:var(--t3);letter-spacing:.1em}
.bk-pp-info strong{font-size:22px;line-height:1.2}
.bk-pp-price{position:relative;font-size:20px;font-weight:900}
.bk-pp-price s{font-size:13px;font-weight:400;color:var(--t3);margin-left:6px}
.bk-pp-claims{position:relative;display:flex;flex-wrap:wrap;gap:6px}
.bk-pp-claims span{font-size:11.5px;font-weight:700;padding:6px 10px;border-radius:999px;color:var(--accent-t);background:var(--accent-soft)}
.bk-pp-story{position:relative;display:flex;flex-direction:column;gap:7px;padding:14px;border-radius:16px;background:var(--panel)}
.bk-pp-story b{font-size:13px}
.bk-pp-story i{height:6px;border-radius:3px;background:var(--line2)}
.bk-pp-story i+i{width:70%}
.bk-pp-rev{position:relative;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--t2)}
.bk-pp-rev b{color:var(--accent-t)}
.bk-pp-btn{margin-top:auto;text-align:center;font-size:13.5px;font-weight:700;color:#FFFFFF;background:var(--accent);padding:13px;border-radius:14px}
.bk-hs{position:absolute;left:var(--x);top:var(--y);width:30px;height:30px;margin:-15px;border-radius:50%;border:0;font:inherit;font-size:13px;font-weight:800;color:#FFFFFF;background:var(--accent);cursor:pointer;box-shadow:0 0 0 0 var(--accent-glow);animation:bkping 2.2s ease-out infinite;z-index:2;transition:transform .3s}
.bk-hs-in{position:absolute;left:auto;top:-6px;right:-6px;margin:0;width:26px;height:26px;font-size:12px}
.bk-hs.on{transform:scale(1.2);background:#0A1B52;box-shadow:0 0 0 5px var(--accent-soft)}
html:not([data-theme="light"]) .bk-hs.on{background:#FFFFFF;color:#0A1B52}
@keyframes bkping{0%{box-shadow:0 0 0 0 var(--accent-glow)}70%,100%{box-shadow:0 0 0 12px transparent}}
.bk-ana-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.bk-ana-list li{display:grid;grid-template-columns:44px minmax(0,1fr);gap:4px;padding:16px 18px;border-radius:20px;border:1px solid transparent;cursor:pointer;opacity:.55;transition:all .4s cubic-bezier(.2,.7,.2,1)}
.bk-ana-list li span{font-size:13px;color:var(--accent-t);padding-top:3px}
.bk-ana-list li b{font-size:17px}
.bk-ana-list li p{font-size:14px;line-height:1.7;color:var(--t2);max-height:0;overflow:hidden;transition:max-height .45s}
.bk-ana-list li.on{opacity:1;background:var(--card);border-color:var(--accent-line);box-shadow:var(--bk-sh)}
.bk-ana-list li.on p{max-height:80px;margin-top:4px}
.bk-ana-list li:hover{opacity:1}

/* ch.04 community (navy chapter) */
.bk-navy{color:#FFFFFF;background:#050A16;--t1:#FFFFFF;--t2:rgba(255,255,255,.68);--t3:rgba(255,255,255,.5);--line:rgba(255,255,255,.1);--line2:rgba(255,255,255,.18);--accent-t:#7CC0FF;--accent-line:rgba(124,192,255,.4)}
.bk-sec.bk-navy::before{background:radial-gradient(ellipse 50% 60% at 85% 40%,rgba(37,99,235,.35),transparent 70%),radial-gradient(ellipse 40% 50% at 0% 100%,rgba(124,58,237,.18),transparent 70%)}
.bk-sec.bk-navy::after{background-image:radial-gradient(rgba(124,192,255,.08) 1.2px,transparent 1.5px);background-size:22px 22px;-webkit-mask-image:radial-gradient(ellipse 50% 60% at 20% 50%,#000,transparent 75%);mask-image:radial-gradient(ellipse 50% 60% at 20% 50%,#000,transparent 75%)}
.bk-com{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:32px;align-items:center}
.bk-curve{padding:26px;border-radius:32px;background:linear-gradient(160deg,rgba(18,58,158,.55),rgba(10,27,82,.75));border:1px solid rgba(124,192,255,.2);box-shadow:0 50px 100px -50px rgba(0,0,0,.8)}
.bk-curve-h{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:11.5px;color:rgba(255,255,255,.6);margin-bottom:14px}
.bk-leg{display:flex;align-items:center;gap:8px}
.bk-leg i{width:16px;height:4px;border-radius:2px;background:#7CC0FF}
.bk-leg i.o{margin-left:10px;height:0;background:none;border-top:2px dashed rgba(255,255,255,.45)}
.bk-curve svg{width:100%;height:240px;display:block;overflow:visible}
.bk-gl path{stroke:rgba(255,255,255,.08);fill:none}
.bk-area{fill:rgba(92,178,255,.16);opacity:0;animation:fin 1s ease both;animation-timeline:view();animation-range:entry 40% cover 50%}
.bk-l1{fill:none;stroke:#7CC0FF;stroke-width:4;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;animation:bkline linear both;animation-timeline:view();animation-range:entry 30% cover 55%;filter:drop-shadow(0 6px 12px rgba(92,178,255,.6))}
.bk-l2{fill:none;stroke:rgba(255,255,255,.45);stroke-width:2;stroke-dasharray:6 6}
@keyframes bkline{to{stroke-dashoffset:0}}
@supports not (animation-timeline:view()){.bk-l1{stroke-dashoffset:0}.bk-area{opacity:1}}
.bk-ax{display:flex;justify-content:space-between;font-size:10.5px;color:rgba(255,255,255,.45);margin-top:8px}
.bk-cards{position:relative;height:330px}
.bk-mc{position:absolute;left:50%;top:50%;width:250px;height:156px;margin:-78px 0 0 -125px;display:flex;flex-direction:column;justify-content:space-between;padding:20px;border-radius:22px;border:1px solid rgba(255,255,255,.18);box-shadow:0 30px 60px -30px rgba(0,0,0,.8);transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.bk-mc span{font-size:10.5px;letter-spacing:.16em;opacity:.75}
.bk-mc b{font-family:var(--bk-serif);font-size:24px;font-weight:600}
.bk-mc small{font-size:12px;opacity:.75}
.bk-mc em{position:absolute;right:20px;bottom:20px;font-style:normal;font-size:11px;opacity:.85}
.bk-mc1{background:linear-gradient(140deg,#1E3A8A,#2563EB);transform:rotate(-12deg) translate(-40px,30px)}
.bk-mc2{background:linear-gradient(140deg,#334155,#64748B);transform:rotate(-3deg) translate(-8px,6px)}
.bk-mc3{background:radial-gradient(ellipse 80% 70% at 100% 0%,rgba(124,192,255,.55),transparent 60%),linear-gradient(140deg,#0A1B52,#123A9E);transform:rotate(7deg) translate(30px,-26px)}
.bk-cards:hover .bk-mc1,.bk-cards.fan .bk-mc1{transform:rotate(-16deg) translate(-90px,50px)}
.bk-cards:hover .bk-mc2,.bk-cards.fan .bk-mc2{transform:rotate(-2deg) translate(-10px,0)}
.bk-cards:hover .bk-mc3,.bk-cards.fan .bk-mc3{transform:rotate(12deg) translate(80px,-40px)}
.bk-com-list{list-style:none;margin:40px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.bk-com-list li{display:flex;flex-direction:column;gap:6px;padding:20px;border-radius:20px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1)}
.bk-com-list b{font-size:16px}
.bk-com-list span{font-size:13.5px;color:rgba(255,255,255,.62)}

/* ch.05 dashboard */
.bk-dash{padding:28px;border-radius:32px;background:var(--card);border:1px solid var(--line);box-shadow:var(--bk-sh)}
.bk-dash-h{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;align-items:baseline;padding-bottom:20px;border-bottom:1px solid var(--line)}
.bk-dash-h span{font-size:11.5px;color:var(--t3)}
.bk-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;padding:22px 0}
.bk-kpis div{display:flex;flex-direction:column;gap:6px;padding:18px;border-radius:20px;background:var(--panel)}
.bk-kpis small{font-size:12.5px;color:var(--t3)}
.bk-kpis strong{font-size:clamp(30px,3.2vw,42px);font-weight:900;letter-spacing:-.03em;font-variant-numeric:tabular-nums;background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.bk-up{font-style:normal;font-size:10.5px;color:var(--bk-ok)}
.bk-bars{display:flex;align-items:flex-end;gap:8px;height:150px;padding:10px 0;border-bottom:1px solid var(--line)}
.bk-bars span{flex:1;height:var(--h);border-radius:10px 10px 4px 4px;background:linear-gradient(180deg,#5CB2FF,#2563EB);opacity:.85;transform-origin:bottom;animation:bkbar linear both;animation-timeline:view();animation-range:entry 30% cover 45%}
.bk-bars span:last-child{background:linear-gradient(180deg,#7CC0FF,#1D4ED8);opacity:1;box-shadow:0 10px 24px -10px var(--accent-glow)}
@keyframes bkbar{from{transform:scaleY(.08)}to{transform:none}}
.bk-dash-f{display:flex;flex-wrap:wrap;gap:8px;padding-top:18px}
.bk-dash-f span{font-size:11.5px;padding:7px 12px;border-radius:999px;color:var(--accent-t);background:var(--accent-soft)}

/* process: an open book with bookmark tabs */
.bk-book{position:relative;display:flex;flex-direction:column;gap:0}
.bk-marks{display:flex;flex-wrap:wrap;gap:6px;padding:0 24px;position:relative;z-index:1}
.bk-marks button{font:inherit;font-size:14px;font-weight:700;padding:12px 18px 18px;margin-bottom:-8px;border-radius:14px 14px 0 0;border:1px solid var(--line);border-bottom:0;background:var(--panel);color:var(--t2);cursor:pointer;transition:transform .3s,background .3s,color .3s}
.bk-marks button:hover{color:var(--t1);transform:translateY(-3px)}
.bk-marks button[aria-selected="true"]{background:var(--accent);color:#FFFFFF;border-color:transparent;transform:translateY(-6px)}
.bk-spread{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);border-radius:28px;background:var(--card);border:1px solid var(--line);box-shadow:var(--bk-sh);overflow:hidden;min-height:340px}
.bk-spread::after{content:"";position:absolute;left:50%;top:0;bottom:0;width:60px;margin-left:-30px;background:linear-gradient(90deg,transparent,rgba(37,99,235,.08) 45%,rgba(11,18,32,.08) 50%,rgba(37,99,235,.08) 55%,transparent);pointer-events:none}
.bk-page{position:relative;display:flex;flex-direction:column;gap:14px;padding:40px}
.bk-pl{background:radial-gradient(ellipse 70% 60% at 0% 0%,var(--accent-soft),transparent 70%)}
.bk-pg-n{position:absolute;bottom:18px;left:40px;font-size:11px;color:var(--t3)}
.bk-pg-n2{left:auto;right:40px}
.bk-pg-big{font-size:clamp(90px,10vw,140px);font-weight:900;line-height:.8;letter-spacing:-.06em;background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.bk-pg-t{font-size:32px;font-weight:900}
.bk-pg-w{align-self:flex-start;font-size:12px;padding:6px 12px;border-radius:999px;color:var(--accent-t);background:var(--accent-soft)}
.bk-pg-d{font-size:16px;line-height:1.85;color:var(--t2)}
.bk-pg-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.bk-pg-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;font-weight:600}
.bk-pg-list li::before{content:"";flex:none;width:20px;height:20px;margin-top:2px;border-radius:50%;background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/11px no-repeat}
.bk-turn .bk-page>*{animation:fin .5s cubic-bezier(.2,.7,.2,1) both}
.bk-turn .bk-pr>*{animation-delay:.08s}

/* appendix: an index with dotted leaders */
.bk-idx{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 28px;align-items:start}
.bk-idx details{border-radius:20px;padding:4px 0;border-bottom:1px solid var(--line);transition:background .3s}
.bk-idx summary{list-style:none;cursor:pointer;display:flex;align-items:baseline;gap:10px;padding:16px 8px;font-size:16.5px;font-weight:700}
.bk-idx summary::-webkit-details-marker{display:none}
.bk-idx summary span{flex:none;max-width:78%}
.bk-idx summary i{flex:1;border-bottom:2px dotted var(--line2);transform:translateY(-4px)}
.bk-idx summary em{flex:none;font-style:normal;font-size:12px;color:var(--accent-t);padding:4px 10px;border-radius:999px;background:var(--accent-soft);transition:background .3s,color .3s}
.bk-idx details[open]{background:var(--card);border-color:transparent;box-shadow:var(--bk-sh);padding:4px 12px 4px}
.bk-idx details[open] summary em{background:var(--accent);color:#FFFFFF}
.bk-idx details p{padding:0 8px 18px;font-size:15px;line-height:1.85;color:var(--t2);animation:fin .45s cubic-bezier(.2,.7,.2,1) both}
.bk-idx summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:12px}

@media (max-width:1100px){
  .bk-toc{grid-template-columns:repeat(3,minmax(0,1fr))}
  .bk-com-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .bk-sec{padding:90px 0}
  .bk-id,.bk-ana,.bk-com,.bk-idx{grid-template-columns:minmax(0,1fr)}
  .bk-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bk-spread{grid-template-columns:minmax(0,1fr)}
  .bk-spread::after{display:none}
  .bk-pl{padding-bottom:24px}.bk-pr{padding-top:0}
  .bk-pg-n{display:none}
  .bk-tags-hide{display:none}
}
@media (max-width:640px){
  .bk-hero{padding:104px 0 70px}
  .bk-h1 span{white-space:normal}
  .bk-stage{height:320px}
  .bk-box{--w:150px;--h:200px;--d:96px}
  .bk-plate{width:300px;margin-left:-150px}
  .bk-tag{display:none}
  .bk-toc{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bk-ch{grid-template-columns:minmax(0,1fr);gap:4px}
  .bk-ch-n{font-size:72px}
  .bk-tl-i{width:250px}
  .bk-pp{grid-template-columns:minmax(0,1fr)}
  .bk-pp-img{aspect-ratio:16/11}
  .bk-pp-bottle{width:22%}
  .bk-cards{height:280px}
  .bk-mc{width:210px;height:132px;margin:-66px 0 0 -105px}
  .bk-cards:hover .bk-mc1,.bk-cards.fan .bk-mc1{transform:rotate(-12deg) translate(-50px,40px)}
  .bk-cards:hover .bk-mc3,.bk-cards.fan .bk-mc3{transform:rotate(10deg) translate(46px,-34px)}
  .bk-com-list{grid-template-columns:minmax(0,1fr)}
  .bk-kpis div{padding:14px}
  .bk-bars{height:110px;gap:5px}
  .bk-marks{padding:0 8px;gap:4px}
  .bk-marks button{font-size:12.5px;padding:10px 12px 16px}
  .bk-page{padding:26px 22px}
  .bk-idx summary span{max-width:86%}
}
@media (prefers-reduced-motion:reduce){
  .bk-box{animation:none;transform:rotateY(-28deg)}
  .bk-tilt{transition:none}
  .bk-tag,.bk-hs,.bk-bars span{animation:none!important}
  .bk-mc,.bk-ana-list li,.bk-tl-i{transition:none}
}