/* Layout: a shipping manifest. Mono code column on the left labels each row; content on the right. */
:root {
  --paper: #f3f6f8;
  --sheet: #ffffff;
  --ink: #12202f;
  --muted: #5a6b7b;
  --rule: #d3dde5;
  --signal: #c94a12;
  --signal-soft: #f6e3d9;
  --f-display: "Big Shoulders Display", "Arial Narrow", Arial, sans-serif;
  --f-body: "Public Sans", "Helvetica Neue", Arial, sans-serif;
  --f-zh: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --s-1: 0.8125rem; --s0: 1rem; --s1: 1.2rem; --s2: 1.75rem; --s3: clamp(2.1rem, 5.6vw, 3.4rem);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0d1621; --sheet: #121e2b; --ink: #e5ecf2; --muted: #93a3b3; --rule: #263646;
    --signal: #ff7a3d; --signal-soft: #3a2116;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0d1621; --sheet: #121e2b; --ink: #e5ecf2; --muted: #93a3b3; --rule: #263646;
  --signal: #ff7a3d; --signal-soft: #3a2116;
  color-scheme: dark;
}
:root { padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); }
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--f-body); font-size: var(--s0); line-height: 1.6; }
html[lang="zh-CN"] body { font-family: var(--f-zh); }
html[lang="en"] [data-l="zh"], html[lang="zh-CN"] [data-l="en"] { display: none; }
img { max-width: 100%; }
a { color: var(--signal); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
.wrap { max-width: 70rem; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }

/* header */
header.top { background: var(--sheet); border-bottom: 1px solid var(--rule); position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--sheet); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 0.75rem; flex-wrap: wrap; }
.mark { display: flex; align-items: baseline; gap: 0.55rem; text-decoration: none; color: var(--ink); }
.mark b { font-family: var(--f-display); font-weight: 800; font-size: 1.65rem; letter-spacing: 0.06em; line-height: 1; }
.mark span { font-family: var(--f-zh); font-weight: 700; font-size: 1.05rem; color: var(--signal); }
nav.main { display: flex; flex-wrap: wrap; gap: 0.2rem 1.1rem; font-size: 0.92rem; }
nav.main a { color: var(--muted); text-decoration: none; padding-block: 0.2rem; border-bottom: 2px solid transparent; }
nav.main a:hover { color: var(--ink); }
nav.main a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--signal); }
.tools { display: flex; gap: 0.6rem; align-items: center; }
.lang { display: flex; border: 1px solid var(--rule); border-radius: 4px; overflow: hidden; }
.lang button { font: 500 var(--s-1)/1 var(--f-mono); background: transparent; color: var(--muted); border: 0; padding: 0.5rem 0.75rem; cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--sheet); }
.menu-btn { display: none; font: 500 var(--s-1)/1 var(--f-mono); background: transparent; color: var(--ink); border: 1px solid var(--rule); border-radius: 4px; padding: 0.5rem 0.7rem; cursor: pointer; }
@media (max-width: 820px) {
  .menu-btn { display: inline-block; }
  nav.main { display: none; width: 100%; flex-direction: column; gap: 0; order: 3; }
  nav.main.open { display: flex; }
  nav.main a { padding-block: 0.6rem; border-bottom: 1px solid var(--rule); }
  nav.main a[aria-current="page"] { border-bottom-color: var(--rule); color: var(--signal); }
}

/* hero */
.hero { padding-block: 3rem 2.5rem; display: grid; gap: 2rem; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); align-items: center; }
.hero.single { grid-template-columns: minmax(0, 1fr); padding-block: 2.6rem 1.6rem; }
@media (max-width: 760px) { .hero { grid-template-columns: minmax(0, 1fr); padding-block: 2rem 1.5rem; } }
.eyebrow { font: 500 var(--s-1)/1.4 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--signal); }
h1 { font-family: var(--f-display); font-weight: 800; font-size: var(--s3); line-height: 1.03; letter-spacing: 0.01em; text-transform: uppercase; margin: 0.6rem 0 1rem; text-wrap: balance; }
html[lang="zh-CN"] h1 { font-family: var(--f-zh); font-weight: 700; text-transform: none; line-height: 1.25; font-size: clamp(1.8rem, 4.6vw, 2.7rem); }
.lede { font-size: var(--s1); color: var(--muted); max-width: 38em; margin: 0; }
.cta { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 1.6rem; align-items: center; }
.btn { display: inline-block; font-weight: 600; background: var(--signal); color: #fff; text-decoration: none; padding: 0.75rem 1.2rem; border-radius: 4px; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--rule); }
.show { font: 400 var(--s-1)/1.5 var(--f-mono); color: var(--muted); max-width: 32em; }
.route { background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px; padding: 1rem; }
.route svg { width: 100%; height: auto; display: block; }
.route .lbl { font-family: var(--f-mono); font-size: 11px; fill: var(--muted); }
.route .city { font-family: var(--f-body); font-size: 14px; font-weight: 600; fill: var(--ink); }
.route .path { fill: none; stroke: var(--signal); stroke-width: 2; stroke-dasharray: 6 5; }
.route .dot { fill: var(--signal); }
.route .home { fill: var(--ink); }
@media (prefers-reduced-motion: no-preference) { .route .path { animation: sail 30s linear infinite; } @keyframes sail { to { stroke-dashoffset: -220; } } }

/* manifest rows */
section.row { border-top: 1px solid var(--rule); }
section.row > .wrap { display: grid; grid-template-columns: 11rem minmax(0, 1fr); gap: 2rem; padding-block: 2.4rem; }
@media (max-width: 760px) { section.row > .wrap { grid-template-columns: minmax(0, 1fr); gap: 0.8rem; padding-block: 1.8rem; } }
.code { font: 500 var(--s-1)/1.5 var(--f-mono); color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; }
.code strong { display: block; color: var(--ink); font-weight: 500; }
h2 { font-family: var(--f-display); font-weight: 800; font-size: var(--s2); text-transform: uppercase; letter-spacing: 0.02em; line-height: 1.1; margin: 0 0 1rem; text-wrap: balance; }
html[lang="zh-CN"] h2 { font-family: var(--f-zh); font-weight: 700; text-transform: none; font-size: 1.5rem; }
h3 { font-size: 1.05rem; margin: 0 0 0.35rem; }
p { max-width: 42em; margin: 0 0 0.9rem; }
.note { font-size: var(--s-1); color: var(--muted); }
.more { font-family: var(--f-mono); font-size: var(--s-1); text-decoration: none; }

.rules { display: grid; border: 1px solid var(--rule); border-radius: 6px; background: var(--sheet); }
.rule { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 1rem; padding: 1rem 1.1rem; border-top: 1px solid var(--rule); }
.rule:first-child { border-top: 0; }
@media (max-width: 520px) { .rule { grid-template-columns: minmax(0, 1fr); gap: 0.3rem; } }
.rule .c { font-weight: 600; }
.tag { display: inline-block; font: 500 0.72rem/1 var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; padding: 0.3rem 0.45rem; border-radius: 3px; margin-top: 0.35rem; }
.tag.open { background: var(--paper); color: var(--ink); border: 1px solid var(--rule); }
.tag.limit { background: var(--signal-soft); color: var(--signal); }

ol.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; }
ol.steps > li { counter-increment: s; display: grid; grid-template-columns: 2.6rem minmax(0, 1fr); gap: 0.8rem; padding-block: 1rem; border-top: 1px solid var(--rule); }
ol.steps > li:first-child { border-top: 0; padding-top: 0; }
ol.steps > li::before { content: counter(s, decimal-leading-zero); font: 500 var(--s-1)/1.7 var(--f-mono); color: var(--signal); }
ol.steps b { display: block; }
ol.steps .d { color: var(--muted); display: block; }
.facts { display: flex; flex-wrap: wrap; gap: 0.4rem 1.4rem; margin-top: 0.45rem; font-family: var(--f-mono); font-size: 0.78rem; letter-spacing: 0.02em; }
.facts span b { color: var(--muted); font-weight: 500; text-transform: uppercase; margin-right: 0.35rem; }

.grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.8rem; }
@media (min-width: 960px) { .grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 620px) { .grid { grid-template-columns: minmax(0, 1fr); } }
.grid > li { background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px; padding: 1rem 1.1rem; display: flex; flex-direction: column; gap: 0.3rem; min-width: 0; }
.grid > li b { display: block; }
.grid > li .d { color: var(--muted); }
.grid > li small { font-family: var(--f-mono); color: var(--muted); font-size: 0.75rem; letter-spacing: 0.04em; margin-top: auto; padding-top: 0.4rem; }
.grid > li a.more { margin-top: 0.3rem; }

.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: 6px; background: var(--sheet); }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { text-align: left; padding: 0.7rem 0.9rem; border-top: 1px solid var(--rule); vertical-align: top; }
thead th { border-top: 0; font: 500 var(--s-1)/1.4 var(--f-mono); text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }

ul.plain { margin: 0; padding-left: 1.1rem; display: grid; gap: 0.4rem; max-width: 42em; }

.contact { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1.5rem; align-items: start; }
@media (max-width: 620px) { .contact { grid-template-columns: minmax(0, 1fr); } }
.line { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; margin-bottom: 0.7rem; }
.line .k { font: 500 var(--s-1)/1 var(--f-mono); color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; min-width: 5rem; }
.line .v { font-family: var(--f-mono); font-size: 1rem; user-select: all; overflow-wrap: anywhere; }
.copy { font: 500 0.75rem/1 var(--f-mono); border: 1px solid var(--rule); background: var(--sheet); color: var(--ink); border-radius: 3px; padding: 0.35rem 0.55rem; cursor: pointer; }
.qr { width: 11.25rem; height: 11.25rem; max-width: 100%; border: 1px solid var(--rule); border-radius: 6px; background: #ffffff; padding: 0.4rem; }

.strip { background: var(--sheet); border-top: 1px solid var(--rule); }
.strip .wrap { padding-block: 2rem; display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between; }
.strip p { margin: 0; font-size: var(--s1); }

footer { border-top: 1px solid var(--rule); background: var(--sheet); }
footer .wrap { padding-block: 1.6rem; font-size: var(--s-1); color: var(--muted); display: grid; gap: 0.8rem; }
footer nav { display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; }
footer nav a { color: var(--muted); }
footer .fine { font-family: var(--f-mono); }