/* Postage page (/postage): airmail look (cream paper, red/blue airmail stripes, kraft parcels,
   stamps, postmarks, a split-flap departure board). Motion carries the page; text stays short. */
:root {
  --cream: #F5EEE1;
  --cream-2: #EADFCB;
  --paper: #FFFDF8;
  --kraft: #C8955A;
  --kraft-l: #DDB27C;
  --kraft-d: #A2713C;
  --navy: #0F1E45;
  --navy-2: #1B2E63;
  --ink: #15193A;
  --ink-2: #4B5070;
  --ink-3: #8A8DA3;
  --red: #D62E36;
  --red-d: #B5232A;
  --blue: #2347A8;
  --amber: #FFC23D;
  --board: #0E0F13;
  --flap: #1D1F26;
  --hh: 84px;
  --f-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --f-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --f-mono: "Space Mono", ui-monospace, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (max-width: 640px) { :root { --hh: 64px; } }

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--hh) + 16px); }
body { margin: 0; background: var(--cream); color: var(--ink); font-family: var(--f-body); font-size: 15px; line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body.lock { overflow: hidden; }
h1, h2, h3, p { margin: 0; }
a { color: inherit; }
button, input { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
.mono { font-family: var(--f-mono); letter-spacing: .02em; }
.serif { font-family: var(--f-serif); font-weight: 900; }
.pw { max-width: 1160px; margin-inline: auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }

/* airmail stripe, marching */
.air { height: 10px; background: repeating-linear-gradient(-45deg, var(--red) 0 12px, var(--paper) 12px 20px, var(--blue) 20px 32px, var(--paper) 32px 40px); background-size: 56.57px 100%; animation: march 1.6s linear infinite; }
.air-thin { height: 6px; }
@keyframes march { to { background-position: 56.57px 0; } }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 28px; border-radius: 4px; font-size: 16px; font-weight: 700; text-decoration: none; letter-spacing: .04em; transition: transform .2s, box-shadow .2s, background .2s, color .2s; }
.btn-red { background: var(--red); color: #fff; box-shadow: 4px 4px 0 var(--ink); }
.btn-red:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.hx .btn-red { box-shadow: 4px 4px 0 var(--amber); }
.hx .btn-red:hover { box-shadow: 6px 6px 0 var(--amber); }
.btn-line { color: #fff; box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .8); }
.btn-line:hover { background: #fff; color: var(--navy); }
.btn-block { display: flex; width: 100%; }
.lnk { border: 0; background: none; padding: 0; color: var(--red); font-size: 14px; font-weight: 700; cursor: pointer; white-space: nowrap; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }
.lnk-light { color: var(--amber); }
.pill { border: 0; border-radius: 999px; padding: 3px 12px; background: rgba(21, 25, 58, .08); font-size: 12px; font-weight: 700; cursor: pointer; }
.pill-red { background: #FBE3E4; color: var(--red); }

.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; margin: 72px 0 20px; }
.sec-head h2, .calc-sec > h2 { font-size: clamp(28px, 4vw, 44px); line-height: 1.15; }
.calc-sec > h2 { margin: 72px 0 20px; }
.br-m { display: none; }
@media (max-width: 640px) { .sec-head { margin: 48px 0 14px; } .calc-sec > h2 { margin: 48px 0 14px; } .br-m { display: inline; } }

.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .8, .2, 1); transition-delay: calc(var(--d, 0) * 100ms); }
.reveal.in { opacity: 1; transform: none; }

/* ============ 1. hero ============ */
.hx { --mx: 0; --my: 0; position: relative; overflow: hidden; color: #fff; background:
  radial-gradient(60% 70% at 78% 40%, rgba(35, 71, 168, .55), transparent 70%),
  radial-gradient(circle at 1px 1px, rgba(255, 255, 255, .09) 1px, transparent 0) 0 0 / 22px 22px,
  var(--navy); }
.hx-in { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: center; gap: 24px; min-height: min(640px, calc(100svh - var(--hh) - 54px)); padding-top: 40px; padding-bottom: 40px; }
.hx-kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; color: var(--amber); letter-spacing: .14em; animation: up .7s both; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 0 rgba(214, 46, 54, .7); animation: ping 1.8s infinite; }
.hx h1 { margin-top: 14px; font-size: clamp(56px, 8.4vw, 112px); line-height: 1.02; letter-spacing: -.02em; }
.hx h1 > span { display: block; overflow: hidden; padding-bottom: .06em; }
.hx h1 i { display: inline-block; font-style: normal; animation: charIn .9s cubic-bezier(.2, .9, .2, 1) both; animation-delay: calc(.15s + var(--i) * 60ms); }
.hx h1 > span:last-child { color: var(--amber); }
.hx-sub { margin-top: 18px; font-size: 16px; color: #C9D2EA; letter-spacing: .08em; animation: up .8s .7s both; }
.hx-btns { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 14px; animation: up .8s .85s both; }

.hx-stage { position: relative; height: 520px; perspective: 1100px; }
.par { position: absolute; transform: translate(calc(var(--mx) * var(--k) * 1px), calc(var(--my) * var(--k) * 1px)); transition: transform .4s ease-out; }
.cube-wrap { left: 50%; top: 50%; width: 220px; height: 220px; margin: -130px 0 0 -110px; }
.cube { position: relative; width: 220px; height: 220px; transform-style: preserve-3d; animation: spin 16s linear infinite, drop 1.1s .3s cubic-bezier(.3, 1.4, .5, 1) both; }
.f { position: absolute; inset: 0; background: linear-gradient(160deg, var(--kraft-l), var(--kraft) 60%, var(--kraft-d)); border: 1px solid rgba(90, 56, 20, .35); backface-visibility: hidden; }
.f::after { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(90deg, rgba(90, 56, 20, .06) 0 2px, transparent 2px 9px); }
.f-front { transform: translateZ(110px); }
.f-back { transform: rotateY(180deg) translateZ(110px); }
.f-right { transform: rotateY(90deg) translateZ(110px); filter: brightness(.86); }
.f-left { transform: rotateY(-90deg) translateZ(110px); filter: brightness(.9); }
.f-top { transform: rotateX(90deg) translateZ(110px); filter: brightness(1.08); }
.f-bottom { transform: rotateX(-90deg) translateZ(110px); filter: brightness(.6); }
.tape-v { position: absolute; left: 50%; top: 0; width: 46px; height: 64px; margin-left: -23px; background: rgba(238, 222, 190, .85); border-bottom: 2px dashed rgba(90, 56, 20, .3); z-index: 1; }
.tape-h { position: absolute; left: 50%; top: 0; bottom: 0; width: 46px; margin-left: -23px; background: rgba(238, 222, 190, .85); z-index: 1; }
.label { position: absolute; left: 22px; right: 22px; bottom: 22px; z-index: 2; padding: 10px 12px 8px; background: var(--paper); color: var(--ink); border-radius: 3px; box-shadow: 0 2px 0 rgba(0, 0, 0, .12); transform: rotate(-2deg); }
.label p { font-size: 10px; line-height: 1.4; }
.label-to { font-size: 12px !important; }
.label-to b { font-size: 20px; font-family: var(--f-serif); margin-left: 4px; }
.label-kg { color: var(--red); font-weight: 700; }
.barcode { display: block; height: 22px; margin-top: 6px; background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 4px, var(--ink) 4px 5px, transparent 5px 8px, var(--ink) 8px 11px, transparent 11px 12px); }
.arrow { position: absolute; left: 18px; bottom: 16px; font: 700 34px var(--f-mono); color: rgba(90, 56, 20, .55); z-index: 1; }
.fragile { position: absolute; inset: auto 0 40% 0; text-align: center; font: 700 14px var(--f-mono); color: var(--red); letter-spacing: .1em; transform: rotate(-8deg); border: 2px solid var(--red); margin: 0 26px; padding: 4px; z-index: 1; }
.brand { position: absolute; inset: 0; display: grid; place-items: center; font-size: 46px; font-weight: 700; color: rgba(90, 56, 20, .45); z-index: 1; }
.cube-shadow { position: absolute; left: 50%; top: 100%; width: 260px; height: 40px; margin: 70px 0 0 -130px; border-radius: 50%; background: radial-gradient(rgba(0, 0, 0, .55), transparent 70%); animation: shadow 4s ease-in-out infinite; }

.stamp { position: relative; display: grid; align-content: center; justify-items: center; width: 120px; height: 140px; padding: 8px; background: var(--paper); color: var(--ink); text-align: center;
  -webkit-mask: linear-gradient(#000 0 0) content-box, radial-gradient(circle 5px, transparent 96%, #000) -7px -7px / 14px 14px round;
  mask: linear-gradient(#000 0 0) content-box, radial-gradient(circle 5px, transparent 96%, #000) -7px -7px / 14px 14px round;
  animation: float 6s ease-in-out infinite; }
.par:nth-child(-n+3) { filter: drop-shadow(0 14px 18px rgba(0, 0, 0, .4)); }
.stamp::before { content: ""; position: absolute; inset: 14px; border: 2px solid currentColor; opacity: .25; }
.stamp b { font-size: 34px; line-height: 1; color: var(--red); }
.stamp span { margin-top: 8px; font-size: 12px; font-weight: 700; line-height: 1.3; }
.par:nth-child(1) { left: 2%; top: 6%; }
.par:nth-child(2) { right: 0; top: 0; }
.par:nth-child(3) { right: 6%; bottom: 4%; }
.st-a { --r: -8deg; animation-delay: -1s; }
.st-b { --r: 7deg; background: #FFF4D6; animation-delay: -3s; }
.st-b b { color: var(--blue); }
.st-c { --r: -4deg; width: 108px; height: 124px; animation-delay: -4.5s; }

.postmark { position: absolute; left: 14%; bottom: 14%; width: 150px; height: 150px; color: var(--red); opacity: 0; pointer-events: none; }
.postmark svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 3; }
.postmark text { fill: currentColor; stroke: none; font: 700 11px var(--f-mono); letter-spacing: .14em; }
.postmark b { position: absolute; inset: 0; display: grid; place-items: center; font: 900 26px var(--f-serif); }
.postmark .wave { position: absolute; left: 92%; top: 38%; width: 120px; height: 30px; background: repeating-linear-gradient(0deg, currentColor 0 3px, transparent 3px 9px); -webkit-mask: radial-gradient(60px 20px at 50% 50%, #000 60%, transparent 62%); opacity: .8; }
.postmark.is-hit { animation: stampHit 3.6s cubic-bezier(.3, 1.6, .5, 1) both; }

.ticker { position: relative; overflow: hidden; border-top: 1px solid rgba(255, 255, 255, .12); background: rgba(0, 0, 0, .25); color: #C9D2EA; font-size: 13px; height: 44px; display: flex; align-items: center; }
.ticker-in { display: flex; gap: 40px; white-space: nowrap; animation: tick 40s linear infinite; padding-left: 40px; }
.ticker-in span { flex-shrink: 0; }

@keyframes up { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
@keyframes charIn { from { transform: translateY(110%) rotate(8deg); } to { transform: none; } }
@keyframes ping { 70% { box-shadow: 0 0 0 10px rgba(214, 46, 54, 0); } 100% { box-shadow: 0 0 0 0 rgba(214, 46, 54, 0); } }
@keyframes spin { from { transform: rotateX(-20deg) rotateY(-30deg); } to { transform: rotateX(-20deg) rotateY(330deg); } }
@keyframes drop { from { translate: 0 -320px; } to { translate: 0 0; } }
@keyframes shadow { 50% { transform: scale(.85); opacity: .7; } }
@keyframes float { 0%, 100% { transform: rotate(var(--r)) translateY(0); } 50% { transform: rotate(calc(var(--r) * -.5)) translateY(-14px); } }
@keyframes stampHit { 0% { opacity: 0; transform: scale(2.4) rotate(-30deg); } 10% { opacity: .95; transform: scale(1) rotate(-12deg); } 12% { transform: scale(1.06) rotate(-12deg); } 16%, 78% { opacity: .95; transform: scale(1) rotate(-12deg); } 100% { opacity: 0; transform: scale(1) rotate(-12deg); } }
@keyframes tick { to { transform: translateX(-50%); } }

@media (max-width: 860px) {
  .hx-in { grid-template-columns: 1fr; gap: 0; padding-top: 20px; padding-bottom: 28px; min-height: 0; }
  .hx-stage { order: -1; height: 330px; margin: 0 -8px; }
  .cube-wrap, .cube { width: 150px; height: 150px; }
  .cube-wrap { margin: -90px 0 0 -75px; }
  .f-front { transform: translateZ(75px); } .f-back { transform: rotateY(180deg) translateZ(75px); }
  .f-right { transform: rotateY(90deg) translateZ(75px); } .f-left { transform: rotateY(-90deg) translateZ(75px); }
  .f-top { transform: rotateX(90deg) translateZ(75px); } .f-bottom { transform: rotateX(-90deg) translateZ(75px); }
  .label { left: 14px; right: 14px; bottom: 14px; padding: 6px 8px 5px; }
  .label p { font-size: 8px; } .label-to b { font-size: 15px; }
  .barcode { height: 14px; margin-top: 3px; }
  .tape-v { width: 32px; margin-left: -16px; height: 44px; } .tape-h { width: 32px; margin-left: -16px; }
  .fragile { font-size: 10px; margin: 0 14px; } .brand { font-size: 32px; }
  .cube-shadow { width: 180px; margin: 50px 0 0 -90px; }
  .stamp { width: 84px; height: 98px; } .stamp b { font-size: 24px; } .stamp span { font-size: 10px; margin-top: 4px; }
  .st-c { width: 78px; height: 90px; }
  .par:nth-child(1) { left: 0; top: 4%; } .par:nth-child(2) { right: 0; top: 2%; } .par:nth-child(3) { right: 2%; bottom: 2%; }
  .postmark { width: 104px; height: 104px; left: 4%; bottom: 4%; } .postmark b { font-size: 18px; } .postmark .wave { display: none; }
  .hx h1 { margin-top: 8px; }
  .hx-btns .btn { flex: 1; padding: 0 12px; }
}

/* ============ 2. journey (sticky, scroll-driven) ============ */
.jr { --p: 0; --sp: 0; position: relative; height: 380vh; background: var(--cream); }
.jr-stick { position: sticky; top: var(--hh); height: calc(100svh - var(--hh)); display: flex; align-items: center; overflow: hidden; }
.jr-grid { width: 100%; display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 32px; align-items: center; }
.jr-k { font-size: 13px; color: var(--red); letter-spacing: .14em; }
.jr-steps { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 6px; }
.jr-steps li { display: grid; grid-template-columns: 48px 1fr; align-items: baseline; column-gap: 8px; padding: 6px 0; color: var(--ink-3); transition: color .4s; }
.jr-steps span { font-size: 15px; }
.jr-steps b { font: 900 clamp(24px, 3vw, 36px)/1.2 var(--f-serif); transition: transform .5s cubic-bezier(.2, .8, .2, 1); transform-origin: left; }
.jr-steps em { grid-column: 2; font-style: normal; font-size: 14px; max-height: 0; overflow: hidden; opacity: 0; transition: max-height .4s, opacity .4s; }
.jr-steps li.is-on { color: var(--ink); }
.jr-steps li.is-on span { color: var(--red); }
.jr-steps li.is-on b { transform: scale(1.12); }
.jr-steps li.is-on em { max-height: 30px; opacity: 1; color: var(--ink-2); }
.jr-rail { margin-top: 16px; height: 4px; background: var(--cream-2); border-radius: 4px; overflow: hidden; }
.jr-rail i { display: block; height: 100%; width: 100%; background: var(--red); transform: scaleX(var(--p)); transform-origin: left; }

.jr-scene { position: relative; height: min(460px, calc(100svh - var(--hh) - 80px)); border-radius: 18px; overflow: hidden; background: linear-gradient(180deg, #DDE7F7 0%, #F3EBDD 78%); box-shadow: inset 0 0 0 2px var(--ink); }
.jr-sky .cl { position: absolute; height: 18px; border-radius: 18px; background: #fff; opacity: .8; animation: cloud 26s linear infinite; }
.jr-sky .cl::before { content: ""; position: absolute; left: 20%; top: -12px; width: 40%; height: 26px; border-radius: 50%; background: inherit; }
.jr-sky .c1 { top: 16%; width: 90px; }
.jr-sky .c2 { top: 34%; width: 60px; animation-duration: 34s; animation-delay: -14s; }
.jr-ground { position: absolute; left: 0; right: 0; bottom: 0; height: 70px; background: repeating-linear-gradient(90deg, var(--ink) 0 30px, transparent 30px 50px) 0 0 / 100% 3px no-repeat, #E3D5BC; }
.jr-path { position: absolute; inset: 0; width: 100%; height: 100%; }
.jr-path path { fill: none; stroke: var(--red); stroke-width: 3; stroke-dasharray: 3 3; stroke-dashoffset: 0; opacity: 0; vector-effect: non-scaling-stroke; }
.jr[data-stage="3"] .jr-path path { opacity: 1; stroke-dasharray: 100; stroke-dashoffset: calc(100 - var(--sp) * 100); }

.jr-van { position: absolute; left: 4%; bottom: 52px; width: 38%; max-width: 220px; transform: translateX(calc((var(--sp) - 1) * 140%)); transition: opacity .4s; }
.jr[data-stage="1"] .jr-van, .jr[data-stage="2"] .jr-van, .jr[data-stage="3"] .jr-van { transform: translateX(-160%); opacity: 0; transition: transform .8s ease-in, opacity .6s; }
.jr-van svg { display: block; width: 100%; height: auto; }
.v-body { fill: var(--paper); stroke: var(--ink); stroke-width: 3; }
.v-cab { fill: var(--red); stroke: var(--ink); stroke-width: 3; }
.v-win { fill: #BFD3F2; stroke: var(--ink); stroke-width: 2; }
.v-wh { fill: var(--ink); stroke: #fff; stroke-width: 3; }
.v-txt { font: 700 20px var(--f-mono); fill: var(--blue); }

.jr-scale { position: absolute; left: 50%; bottom: 66px; width: 170px; margin-left: -85px; height: 46px; opacity: 0; transform: translateY(20px); transition: opacity .4s, transform .4s; }
.jr-plate { position: absolute; left: 0; right: 0; top: 0; height: 10px; border-radius: 6px; background: var(--ink); }
.jr-read { position: absolute; left: 50%; top: 14px; transform: translateX(-50%); padding: 2px 10px; border-radius: 4px; background: #0B1A10; color: #7CF29A; font-size: 16px; white-space: nowrap; }
.jr[data-stage="1"] .jr-scale { opacity: 1; transform: none; }

.jr-box { position: absolute; left: 50%; bottom: 70px; width: 130px; height: 110px; margin-left: -65px; background: linear-gradient(160deg, var(--kraft-l), var(--kraft) 60%, var(--kraft-d)); border: 2px solid var(--ink); border-radius: 4px; transition: transform .6s cubic-bezier(.3, 1.4, .5, 1); transform-origin: center; }
.jr-box::before { content: ""; position: absolute; left: -2px; right: -2px; top: -22px; height: 22px; background: var(--kraft-l); border: 2px solid var(--ink); border-bottom: 0; transform: skewX(-30deg); transform-origin: bottom; }
.jr[data-stage="1"] .jr-box { transform: translateY(-46px); }
.jr-tape { position: absolute; left: 50%; top: -24px; width: 34px; height: 64px; margin-left: -17px; background: rgba(238, 222, 190, .95); border: 1px solid rgba(90, 56, 20, .3); transform: scaleY(0); transform-origin: top; transition: transform .5s; z-index: 1; }
.jr-label { position: absolute; right: 10px; bottom: 10px; width: 62px; height: 40px; padding: 6px; background: var(--paper); border-radius: 2px; transform: scale(2) rotate(18deg); opacity: 0; transition: transform .45s cubic-bezier(.3, 1.6, .5, 1) .2s, opacity .2s .2s; z-index: 2; }
.jr-label .barcode { height: 16px; margin: 6px 0 0; }
.jr[data-stage="2"] .jr-tape, .jr[data-stage="3"] .jr-tape { transform: scaleY(1); }
.jr[data-stage="2"] .jr-label, .jr[data-stage="3"] .jr-label { transform: rotate(-4deg); opacity: 1; }
.jr[data-stage="3"] .jr-box { transition: none; transform: translate(calc(var(--sp) * 180%), calc(var(--sp) * -230px)) scale(calc(1 - var(--sp) * .6)) rotate(calc(var(--sp) * -14deg)); }

.jr-flash { position: absolute; inset: 0; background: #fff; opacity: 0; pointer-events: none; }
.jr[data-stage="1"] .jr-flash { animation: flash .7s .6s; }
.jr-plane { position: absolute; left: 62%; bottom: 150px; width: 64px; opacity: 0; transform: translate(calc(var(--sp) * 260%), calc(var(--sp) * -200%)) rotate(48deg); transition: opacity .3s; }
.jr-plane svg { width: 100%; fill: var(--blue); }
.jr[data-stage="3"] .jr-plane { opacity: 1; }
.jr-dest { position: absolute; right: 18px; top: 18px; padding: 6px 12px; border: 2px solid var(--red); border-radius: 4px; color: var(--red); font-size: 13px; transform: rotate(6deg) scale(1.6); opacity: 0; transition: transform .4s cubic-bezier(.3, 1.6, .5, 1), opacity .3s; }
.jr-dest b { font: 900 22px var(--f-serif); }
.jr[data-stage="3"] .jr-dest { opacity: 1; transform: rotate(6deg); }

@keyframes cloud { from { left: -20%; } to { left: 110%; } }
@keyframes flash { 0% { opacity: 0; } 20% { opacity: .9; } 100% { opacity: 0; } }

@media (max-width: 860px) {
  .jr { height: 340vh; }
  .jr-stick { align-items: flex-start; padding-top: 24px; }
  .jr-grid { grid-template-columns: 1fr; gap: 14px; }
  .jr-steps { margin-top: 8px; gap: 0; }
  .jr-steps li { display: none; padding: 0; }
  .jr-steps li.is-on { display: grid; }
  .jr-steps li.is-on b { transform: none; font-size: 30px; }
  .jr-rail { margin-top: 10px; }
  .jr-scene { height: min(380px, calc(100svh - var(--hh) - 200px)); }
  .jr-box { width: 104px; height: 88px; margin-left: -52px; }
  .jr[data-stage="3"] .jr-box { transform: translate(calc(var(--sp) * 120%), calc(var(--sp) * -170px)) scale(calc(1 - var(--sp) * .6)) rotate(calc(var(--sp) * -14deg)); }
  .jr-label { width: 50px; height: 32px; }
}

/* ============ 3. departure board ============ */
.board { background: var(--board); color: #EDEDED; border-radius: 14px; padding: 16px 18px 12px; box-shadow: 8px 8px 0 var(--ink); }
.board-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-bottom: 12px; border-bottom: 1px solid #2A2C35; }
.board-top > span { font-size: 12px; color: var(--amber); letter-spacing: .14em; }
.board-kg { display: grid; grid-template-columns: auto auto 220px; align-items: center; gap: 10px; font-size: 13px; color: #9A9DAA; }
.board-kg b { font-size: 26px; color: var(--amber); min-width: 76px; }
.board-head { display: grid; grid-template-columns: 1.1fr .7fr 1.2fr 150px; gap: 12px; padding: 10px 12px 4px; font-size: 11px; color: #6E7180; letter-spacing: .1em; }
.board-head span:last-child { text-align: right; }
.board-list { position: relative; transition: height .3s; }
.brow { position: absolute; left: 0; right: 0; top: 0; height: 52px; display: grid; grid-template-columns: 1.1fr .7fr 1.2fr 150px; gap: 12px; align-items: center; padding: 0 12px; border: 0; border-top: 1px solid #1E2028; background: transparent; color: inherit; text-align: left; cursor: pointer; transition: transform .6s cubic-bezier(.2, .8, .2, 1), background .2s; }
.brow:hover { background: #17181E; }
.brow.is-on { background: #1C1A12; box-shadow: inset 3px 0 0 var(--amber); }
.b-name b { font-size: 16px; }
.b-to { font-size: 15px; color: #C7CAD6; }
.b-tag { font-size: 12px; color: #8D90A0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brow.is-best .b-tag::before { content: "最省 "; color: var(--amber); font-weight: 700; }
.b-price { justify-self: end; display: flex; gap: 2px; perspective: 300px; }
.fl { display: grid; place-items: center; width: 18px; height: 30px; border-radius: 3px; background: var(--flap); color: #F4F4F4; font-style: normal; font-size: 18px; font-weight: 700; position: relative; }
.fl::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: rgba(0, 0, 0, .7); }
.brow.is-best .fl { color: var(--amber); }
.fl.go { animation: flap .45s calc(var(--i) * 45ms) cubic-bezier(.3, 1.2, .5, 1) both; transform-origin: 50% 50%; }
.board-foot { margin-top: 8px; font-size: 12px; color: #6E7180; text-align: center; }
@keyframes flap { 0% { transform: rotateX(90deg); background: #34363F; } 60% { transform: rotateX(-20deg); } 100% { transform: none; } }

.rng { -webkit-appearance: none; appearance: none; width: 100%; height: 30px; background: transparent; cursor: pointer; }
.rng::-webkit-slider-runnable-track { height: 6px; border-radius: 6px; background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 10px), var(--cream-2); }
.rng::-moz-range-track { height: 6px; border-radius: 6px; background: var(--cream-2); }
.rng::-webkit-slider-thumb { -webkit-appearance: none; width: 28px; height: 28px; margin-top: -11px; border-radius: 4px; background: var(--red); border: 3px solid var(--paper); box-shadow: 2px 2px 0 var(--ink); transform: rotate(45deg); }
.rng::-moz-range-thumb { width: 20px; height: 20px; border-radius: 4px; background: var(--red); border: 3px solid var(--paper); }
.board .rng::-webkit-slider-runnable-track { background: repeating-linear-gradient(90deg, #555 0 2px, transparent 2px 10px), #26282F; }
.board .rng::-moz-range-track { background: #26282F; }
.board .rng::-webkit-slider-thumb { background: var(--amber); border-color: var(--board); box-shadow: none; }

.tickets { margin-top: 18px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.tk { position: relative; display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 14px; align-items: center; padding: 16px 18px 16px 16px; border: 2px solid var(--ink); border-radius: 8px; background: var(--paper); text-align: left; cursor: pointer; transition: transform .25s, box-shadow .25s; }
.tk:hover { transform: translateY(-4px) rotate(-1deg); box-shadow: 4px 6px 0 var(--ink); }
.tk span { grid-row: span 2; display: grid; place-items: center; width: 56px; height: 56px; border-radius: 4px; background: var(--red); color: #fff; font-size: 13px; font-weight: 700; }
.tk:nth-child(2) span { background: var(--blue); }
.tk:nth-child(3) span { background: var(--kraft-d); }
.tk b { font: 900 20px var(--f-serif); }
.tk em { font-style: normal; color: var(--red); font-weight: 700; font-size: 14px; }

@media (max-width: 640px) {
  .board { padding: 12px 10px 10px; box-shadow: 5px 5px 0 var(--ink); }
  .board-kg { grid-template-columns: auto auto 1fr; width: 100%; }
  .board-head { display: none; }
  .brow { height: 54px; grid-template-columns: 1fr auto; grid-template-rows: auto auto; row-gap: 0; padding: 0 6px; }
  .b-name { grid-column: 1; } .b-name b { font-size: 15px; }
  .b-to { grid-column: 1; grid-row: 2; font-size: 11px; }
  .b-tag { display: none; }
  .b-price { grid-column: 2; grid-row: 1 / span 2; }
  .fl { width: 15px; height: 26px; font-size: 15px; }
  .tickets { grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
  .tk { grid-template-columns: 1fr; justify-items: center; text-align: center; padding: 12px 4px; row-gap: 4px; }
  .tk span { grid-row: auto; width: 44px; height: 44px; font-size: 11px; }
  .tk b { font-size: 16px; } .tk em { font-size: 12px; }
}

/* ============ 4. estimator: postal form + shipping label ============ */
.pc { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 28px; align-items: start; }
.form { position: relative; padding: 6px 24px 10px; background: var(--paper); border: 2px solid var(--ink); border-radius: 6px; background-image: linear-gradient(transparent 31px, rgba(35, 71, 168, .07) 32px); background-size: 100% 32px; }
.fr { padding: 16px 0; }
.fr + .fr { border-top: 2px dashed var(--cream-2); }
.fr-h { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; font-size: 15px; font-weight: 700; }
.fr-h > span.mono { display: grid; place-items: center; width: 28px; height: 28px; border: 2px solid var(--ink); border-radius: 50%; font-size: 11px; }
.fr-h em { margin-left: auto; font-style: normal; font-size: 12px; color: var(--red); }
.fr-h .lnk { margin-left: auto; font-size: 13px; }
.fr-val { margin-left: auto; padding: 2px 10px; background: var(--ink); color: var(--amber); border-radius: 4px; font-size: 15px; }
.fr-2 { display: grid; grid-template-columns: auto 1fr; gap: 28px; }
.fr-sub { display: block; margin-top: 6px; font-size: 12px; color: var(--ink-3); }
.chip-g { display: grid; grid-template-columns: 44px 1fr; gap: 8px; align-items: start; }
.chip-g + .chip-g { margin-top: 10px; }
.chip-g > span { padding-top: 10px; font-size: 11px; color: var(--ink-3); }
.chip-g > div { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: grid; justify-items: start; padding: 6px 14px 5px; border: 2px solid var(--ink); border-radius: 6px; background: var(--paper); line-height: 1.2; cursor: pointer; transition: transform .15s, box-shadow .15s, background .15s, color .15s; }
.chip b { font-size: 14px; }
.chip small { font-size: 11px; color: var(--ink-3); }
.chip:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ink); }
.chip.is-on { background: var(--ink); color: #fff; box-shadow: 3px 3px 0 var(--red); }
.chip.is-on small { color: var(--amber); }
.step { display: inline-flex; align-items: center; border: 2px solid var(--ink); border-radius: 6px; background: var(--paper); }
.step button { width: 44px; height: 42px; border: 0; background: transparent; font-size: 22px; cursor: pointer; }
.step button:hover { background: var(--cream); }
.step output { min-width: 40px; text-align: center; font-size: 20px; font-weight: 700; border-inline: 2px solid var(--ink); line-height: 42px; }
.seg { display: grid; grid-template-columns: repeat(4, 1fr); border: 2px solid var(--ink); border-radius: 6px; overflow: hidden; }
.seg label { position: relative; }
.seg label + label { border-left: 2px solid var(--ink); }
.seg input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.seg span { display: block; text-align: center; padding: 10px 4px; font-size: 13px; cursor: pointer; white-space: nowrap; background: var(--paper); transition: background .15s, color .15s; }
.seg input:checked + span { background: var(--ink); color: #fff; font-weight: 700; }
.seg input:focus-visible + span { outline: 2px solid var(--red); outline-offset: -4px; }
.chk { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.chk input { width: 18px; height: 18px; margin: 0; accent-color: var(--red); }
.bx-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; transition: opacity .2s; }
.bx-grid.is-off { opacity: .4; }
.bx { position: relative; display: grid; justify-items: center; gap: 0; padding: 10px 4px 8px; border: 2px solid var(--cream-2); border-radius: 6px; background: var(--paper); cursor: pointer; transition: border-color .15s, transform .2s, box-shadow .2s; }
.bx:hover { transform: translateY(-3px); }
.bx.is-on { border-color: var(--ink); box-shadow: 3px 3px 0 var(--red); }
.bx-art { height: 50px; display: flex; align-items: flex-end; }
.k-t { fill: var(--kraft-l); } .k-f { fill: var(--kraft); } .k-s { fill: var(--kraft-d); } .k-tape { fill: rgba(255, 255, 255, .55); }
.bx-no { margin-top: 4px; font-size: 16px; font-weight: 700; }
.bx-size { font-size: 10px; color: var(--ink-3); }
.bx-price { font-size: 15px; font-weight: 700; color: var(--red); }
.bx em { position: absolute; top: 4px; right: 4px; padding: 0 4px; background: var(--cream-2); color: var(--ink-2); border-radius: 3px; font-size: 10px; font-style: normal; }
.bx.pop { animation: pop .3s ease; }
@keyframes pop { 50% { transform: scale(1.08) rotate(-2deg); } }

.lbl { position: sticky; top: calc(var(--hh) + 20px); }
.lbl-slot { height: 14px; margin: 0 -6px; border-radius: 8px; background: var(--ink); box-shadow: inset 0 -4px 0 #000; position: relative; z-index: 2; }
.lbl-paper { position: relative; margin: -6px 6px 0; padding: 0 18px 16px; background: var(--paper); border: 2px solid var(--ink); border-top: 0; box-shadow: 0 18px 30px -18px rgba(21, 25, 58, .5); transform-origin: top; }
.lbl-paper .air { margin: 0 -18px; }
.lbl-paper.is-print { animation: print .55s cubic-bezier(.3, 1.3, .5, 1); }
@keyframes print { 0% { clip-path: inset(0 0 100% 0); transform: translateY(-30px); } 100% { clip-path: inset(0 0 0 0); transform: none; } }
.lbl-row { display: flex; justify-content: space-between; gap: 8px; padding: 10px 0 8px; border-bottom: 2px solid var(--ink); font-size: 11px; }
.lbl-row b { color: var(--red); font-family: var(--f-serif); font-size: 13px; }
.lbl-route { margin-top: 10px; font-size: 13px; color: var(--ink-2); }
.lbl-k { margin-top: 8px; font-size: 11px; color: var(--ink-3); letter-spacing: .2em; }
.lbl-total { font-size: 56px; font-weight: 700; line-height: 1; color: var(--ink); letter-spacing: -.03em; }
.lbl-lines { margin-top: 12px; display: grid; gap: 6px; }
.ll { display: grid; grid-template-columns: auto 1fr auto; gap: 8px; align-items: baseline; font-size: 14px; }
.ll small { margin-left: 6px; font-size: 11px; color: var(--ink-3); }
.ll i { border-bottom: 2px dotted var(--cream-2); transform: translateY(-4px); }
.barcode-lg { height: 40px; margin-top: 14px; }
.lbl-notes { margin: 10px 0 0; padding: 0 0 0 16px; font-size: 12px; color: var(--ink-2); }
.lbl .btn { margin-top: 16px; }
.lbl-after { margin-top: 10px; display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: 12px; color: var(--ink-2); }

.mbar { display: none; }
@media (max-width: 900px) {
  .pc { grid-template-columns: 1fr; }
  .lbl { position: static; }
  .bx-grid { grid-template-columns: repeat(3, 1fr); }
  .mbar { display: flex; align-items: center; gap: 10px; position: fixed; left: 12px; right: 12px; bottom: max(12px, env(safe-area-inset-bottom, 0px)); z-index: 30; padding: 10px 18px; border-radius: 8px; background: var(--ink); color: #fff; text-decoration: none; box-shadow: 4px 4px 0 var(--red); transform: translateY(170%); transition: transform .3s cubic-bezier(.3, 1.3, .5, 1); }
  .mbar.is-on { transform: none; }
  .mbar span { font-size: 13px; color: #A9AEC6; }
  .mbar b { font-size: 22px; color: var(--amber); }
  .mbar i { margin-left: auto; font-style: normal; font-size: 13px; }
}
@media (max-width: 640px) {
  .form { padding: 4px 14px 8px; }
  .chip-g { grid-template-columns: 1fr; gap: 4px; }
  .chip-g > span { padding-top: 0; }
  .chip { padding: 5px 10px 4px; }
  .chip b { font-size: 13px; }
  .fr-2 { grid-template-columns: 1fr; gap: 16px; }
  .seg { grid-template-columns: repeat(2, 1fr); }
  .seg label:nth-child(3) { border-left: 0; }
  .seg label:nth-child(n+3) { border-top: 2px solid var(--ink); }
  .lbl-total { font-size: 48px; }
}

/* ============ 5. X-ray conveyor ============ */
.xr-sec { margin-top: 72px; padding: 4px 0 40px; background: var(--ink); color: #fff; }
.xr-sec .sec-head { margin: 40px auto 20px; }
.xr { position: relative; display: grid; gap: 14px; padding: 10px 0; overflow: hidden; }
.belt { position: relative; overflow: hidden; padding: 8px 0 14px; background: linear-gradient(transparent calc(100% - 8px), #2B2F52 calc(100% - 8px)); }
.belt-in { display: flex; gap: 18px; width: max-content; animation: belt 36s linear infinite; }
.belt-rev .belt-in { animation-direction: reverse; animation-duration: 42s; }
.it { flex-shrink: 0; display: grid; justify-items: center; gap: 6px; width: 120px; padding: 14px 8px 10px; border-radius: 8px; background: #1F2347; position: relative; }
.it svg { width: 44px; height: 44px; fill: none; stroke: #C9D2EA; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.it b { font-size: 13px; font-weight: 500; color: #C9D2EA; }
.it::after { content: "✕"; position: absolute; top: 6px; right: 8px; color: var(--red); font-weight: 700; font-size: 14px; }
.scanner { position: absolute; top: 0; bottom: 0; left: 50%; width: 170px; margin-left: -85px; border-inline: 3px solid rgba(124, 242, 154, .65); background: rgba(124, 242, 154, .07); pointer-events: none; }
.scanner span { position: absolute; top: 4px; left: 50%; transform: translateX(-50%); font-size: 11px; letter-spacing: .3em; color: #7CF29A; }
.scanner::after { content: ""; position: absolute; inset: 0; backdrop-filter: grayscale(1) sepia(1) hue-rotate(70deg) saturate(4) brightness(1.4) contrast(1.2); -webkit-backdrop-filter: grayscale(1) sepia(1) hue-rotate(70deg) saturate(4) brightness(1.4) contrast(1.2); }
.beam { position: absolute; left: 0; right: 0; height: 3px; background: #7CF29A; box-shadow: 0 0 18px 4px rgba(124, 242, 154, .7); animation: beam 2.4s ease-in-out infinite; z-index: 1; }
.xr-note { margin-top: 10px; color: var(--amber); font-weight: 700; font-size: 14px; }
@keyframes belt { to { transform: translateX(-50%); } }
@keyframes beam { 0%, 100% { top: 6%; } 50% { top: 92%; } }
@media (max-width: 640px) {
  .xr-sec { margin-top: 48px; }
  .it { width: 96px; padding: 10px 6px 8px; } .it svg { width: 34px; height: 34px; } .it b { font-size: 11px; }
  .scanner { width: 110px; margin-left: -55px; }
}

/* ============ 6. FAQ / tracking / contact ============ */
.help { display: grid; grid-template-columns: 1.4fr 1fr; gap: 0 32px; }
.faq { display: grid; gap: 8px; }
.faq details { padding: 0 16px; background: var(--paper); border: 2px solid var(--ink); border-radius: 6px; transition: box-shadow .2s; }
.faq details[open] { box-shadow: 4px 4px 0 var(--blue); }
.faq summary { list-style: none; display: flex; justify-content: space-between; gap: 10px; padding: 12px 0; font-weight: 700; font-size: 14px; cursor: pointer; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 700 20px/1 var(--f-mono); color: var(--red); transition: transform .25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 12px; font-size: 13px; color: var(--ink-2); }
.tags { display: grid; gap: 8px; }
.tag { position: relative; display: flex; align-items: center; gap: 12px; padding: 12px 16px 12px 40px; background: var(--kraft-l); border: 2px solid var(--ink); border-radius: 6px 22px 22px 6px; text-decoration: none; font-size: 14px; transition: transform .2s; transform-origin: left center; }
.tag:hover { transform: rotate(-2deg); }
.tag i { position: absolute; left: 14px; top: 50%; width: 12px; height: 12px; margin-top: -6px; border-radius: 50%; background: var(--cream); border: 2px solid var(--ink); }
.tag span { margin-left: auto; color: var(--red); font-weight: 700; }
.help-note { margin-top: 12px; font-size: 12px; color: var(--ink-2); }
@media (max-width: 760px) { .help { grid-template-columns: 1fr; } }

.contact { position: relative; margin: 56px 0 48px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 28px; padding: 18px 24px 18px 56px; background: var(--paper); border: 2px solid var(--ink); border-radius: 8px; box-shadow: 6px 6px 0 var(--red); font-size: 14px; }
.contact-hole { position: absolute; left: 18px; top: 50%; width: 18px; height: 18px; margin-top: -9px; border-radius: 50%; background: var(--cream); border: 2px solid var(--ink); }
.contact-item { display: flex; align-items: center; gap: 8px; }
.contact-item span { color: var(--ink-3); font-size: 13px; }
.contact-item a { text-decoration: none; font-weight: 700; }
.contact-go { margin-left: auto; color: var(--red); font-weight: 700; text-decoration: none; }
@media (max-width: 720px) {
  .contact { margin-bottom: 100px; padding: 14px 14px 14px 44px; gap: 8px 18px; }
  .contact-hole { left: 12px; }
  .contact-go { margin-left: 0; width: 100%; }
}

/* ============ modal ============ */
.modal { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; padding: 16px; background: rgba(15, 30, 69, .6); animation: fadeIn .2s both; }
.modal-box { width: min(900px, 100%); max-height: calc(100vh - 32px); overflow: auto; background: var(--paper); border: 2px solid var(--ink); border-radius: 8px; padding: 0 18px 20px; animation: up .3s cubic-bezier(.2, .8, .2, 1) both; }
.modal-box > .air { margin: 0 -18px; }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin: 12px 0 10px; }
.modal-head h2 { font-size: 22px; }
.modal-x { width: 40px; height: 40px; border: 2px solid var(--ink); border-radius: 50%; background: var(--paper); font-size: 22px; cursor: pointer; }
.m-lead { margin: 10px 0; font-size: 13px; color: var(--ink-2); }
.m-table { overflow-x: auto; border: 2px solid var(--ink); border-radius: 6px; }
.m-table table { width: 100%; border-collapse: collapse; font-size: 13px; white-space: nowrap; }
.m-table th, .m-table td { padding: 6px 10px; text-align: right; font-family: var(--f-mono); }
.m-table thead th { position: sticky; top: 0; background: var(--ink); color: #fff; font-family: var(--f-body); font-size: 12px; }
.m-table tbody th { position: sticky; left: 0; background: var(--cream); text-align: center; }
.m-table tbody tr:nth-child(even) td { background: #FAF5EA; }
.m-table tbody tr:hover td { background: #FBE3E4; }
.m-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.m-chips span { padding: 5px 12px; border: 1.5px solid var(--ink); border-radius: 4px; font-size: 13px; }
.m-chips b { margin-right: 6px; }
.m-photos { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.m-photos img { display: block; width: 100%; height: auto; border-radius: 6px; background: var(--cream); }
.m-ban { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.m-ban li { padding: 5px 12px; border-radius: 4px; background: #FBE3E4; color: var(--red); font-size: 13px; font-weight: 700; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@media (max-width: 520px) {
  .modal { place-items: end center; padding: 0; }
  .modal-box { border-radius: 12px 12px 0 0; max-height: 88vh; }
  .m-photos { grid-template-columns: 1fr; }
}

/* ============ reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .air, .dot, .hx-kicker, .hx h1 i, .hx-sub, .hx-btns, .cube, .cube-shadow, .stamp, .ticker-in, .jr-sky .cl, .belt-in, .beam, .fl.go, .lbl-paper.is-print, .bx.pop, .modal, .modal-box { animation: none; }
  .cube { transform: rotateX(-18deg) rotateY(-28deg); }
  .stamp { transform: rotate(var(--r)); }
  .postmark { opacity: .95; transform: rotate(-12deg); }
  .reveal { opacity: 1; transform: none; transition: none; }
  .brow, .jr-box, .jr-van, .jr-label, .jr-tape { transition: none; }
}