:root {
  color-scheme: light;
  --sea-950: #071e2a;
  --sea-900: #0d2c3a;
  --sea-700: #315b66;
  --chart: #dce3df;
  --paper: #f1eee3;
  --ink: #172e36;
  --muted: #536970;
  --line: #bec9c5;
  --brass: #e2b768;
  --signal: #d87542;
  --display: "Bahnschrift SemiCondensed", "Arial Narrow", "Franklin Gothic Medium", sans-serif;
  --sans: "Segoe UI", Arial, sans-serif;
  font-family: var(--sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--chart); color: var(--ink); line-height: 1.65; }
a { color: var(--sea-700); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--signal); }
img { max-width: 100%; }
.wrap { width: min(1320px, calc(100% - 64px)); margin-inline: auto; }
.skip { position: absolute; left: -10000px; top: 8px; z-index: 20; background: var(--paper); padding: 10px 14px; }
.skip:focus { left: 12px; }
a:focus-visible { outline: 3px solid var(--brass); outline-offset: 3px; }

.topbar { position: relative; z-index: 10; background: var(--sea-950); color: white; border-top: 3px solid var(--brass); }
.bar { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: white; display: inline-flex; align-items: center; gap: 12px; min-width: max-content; text-decoration: none; font: 750 1rem/1 var(--display); letter-spacing: .03em; text-transform: uppercase; }
.brand img { width: 42px; height: 42px; border: 1px solid rgb(226 183 104 / 72%); border-radius: 50%; }
.nav { display: flex; align-items: center; gap: 18px; }
.nav > ul { display: flex; align-items: center; gap: 5px; list-style: none; margin: 0; padding: 0; }
.nav li { position: relative; }
.nav li > a { display: block; min-height: 44px; padding: 12px 10px 9px; color: #dce8e6; text-decoration: none; white-space: nowrap; border-bottom: 2px solid transparent; font-size: .78rem; font-weight: 750; letter-spacing: .06em; text-transform: uppercase; }
.nav li > a:hover, .nav li.active > a { color: white; border-color: var(--brass); }
.nav .kids { display: none; position: absolute; top: 100%; left: 0; min-width: 245px; margin: 0; padding: 8px; list-style: none; border-top: 2px solid var(--brass); background: var(--sea-950); box-shadow: 0 16px 28px rgb(4 20 28 / 25%); }
.nav .has-kids:hover .kids, .nav .has-kids:focus-within .kids { display: block; }
.nav .kids a { padding: 9px 11px; }
.nav .cta, .btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 44px; padding: 9px 15px; border: 1px solid var(--brass); background: var(--brass); color: var(--sea-950); font-size: .78rem; font-weight: 850; letter-spacing: .06em; text-decoration: none; white-space: nowrap; text-transform: uppercase; transition: background-color .18s ease; }
.nav .cta:hover, .btn:hover { background: #f0cb82; color: var(--sea-950); }

.hero { min-height: clamp(660px, 78svh, 850px); position: relative; display: flex; align-items: center; overflow: hidden; isolation: isolate; background: var(--sea-950); color: white; }
.hero::before, .guide-cover::before { content: ""; position: absolute; z-index: -1; inset: 0 55% 0 0; pointer-events: none; opacity: .27; background: repeating-radial-gradient(ellipse at 6% 82%, transparent 0 34px, rgb(191 218 210 / 20%) 35px 36px, transparent 37px 70px); }
.hero-image, .hero-scrim { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-image { z-index: -2; left: auto; width: 76%; object-fit: cover; object-position: center 53%; clip-path: polygon(17% 0, 100% 0, 100% 100%, 0 100%); filter: saturate(.79) contrast(1.04); }
.hero-scrim { z-index: -1; background: linear-gradient(90deg, var(--sea-950) 0%, rgb(7 30 42 / 98%) 29%, rgb(7 30 42 / 84%) 42%, rgb(7 30 42 / 8%) 77%), linear-gradient(0deg, rgb(7 30 42 / 55%), transparent 34%); }
.hero-in { width: min(1320px, calc(100% - 64px)); margin-inline: auto; padding-block: 70px 78px; }
.hero-index, .eyebrow, .trail, .article-meta, .logbook-heading > p, .card-kicker, .chapter-nav > p { font-size: .68rem; font-weight: 850; letter-spacing: .17em; text-transform: uppercase; }
.hero-index { width: fit-content; margin: 0 0 46px; padding-left: 12px; border-left: 2px solid var(--brass); color: #d3e1dd; }
.eyebrow { margin: 0 0 17px; color: var(--brass); }
.hero h1, .guide-cover h1 { max-width: 9ch; margin: 0; color: white; font: 850 clamp(4rem, 8.7vw, 8rem)/.83 var(--display); letter-spacing: -.035em; text-transform: uppercase; text-wrap: balance; }
.hero .lead { max-width: 440px; margin: 24px 0 0; color: #e4ece8; font-size: clamp(1.02rem, 1.7vw, 1.2rem); line-height: 1.62; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0 0; }
.btn.ghost { border-color: rgb(255 255 255 / 55%); background: rgb(7 30 42 / 36%); color: white; }
.btn.ghost:hover { background: rgb(255 255 255 / 15%); }
.hero::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 5px; background: var(--brass); }

.voyage-brief { background: var(--sea-900); color: white; border-bottom: 1px solid #45636b; }
.voyage-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); padding-block: 22px 25px; }
.voyage-item { padding: 2px 21px; border-left: 1px solid rgb(226 183 104 / 72%); }
.voyage-item:first-child { padding-left: 0; border-left: 0; }
.voyage-item span { color: var(--brass); font-size: .63rem; font-weight: 850; letter-spacing: .13em; }
.voyage-item p { margin: 6px 0 0; color: #e6eeea; font-size: .94rem; line-height: 1.42; }

.logbook-section { margin-block: 66px 75px; }
.logbook-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; padding-bottom: 13px; border-bottom: 1px solid var(--sea-700); }
.logbook-heading > p { margin: 0; color: var(--signal); }
.logbook-heading h2 { margin: 0; color: var(--sea-950); font: 800 clamp(2.1rem, 4.4vw, 3.8rem)/.94 var(--display); letter-spacing: -.025em; text-transform: uppercase; }
.grid-title { margin: 0; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); grid-auto-rows: minmax(245px, 1fr); gap: 13px; }
.card { min-width: 0; min-height: 292px; position: relative; display: flex; overflow: hidden; color: white; background: var(--sea-900); text-decoration: none; isolation: isolate; }
.card:first-child { grid-column: span 2; grid-row: span 2; min-height: 600px; }
.card > img { position: absolute; z-index: -2; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: saturate(.78); transition: transform .35s ease, filter .35s ease; }
.card::after { content: ""; position: absolute; z-index: -1; inset: 0; background: linear-gradient(0deg, rgb(4 23 33 / 96%) 0%, rgb(4 23 33 / 74%) 34%, rgb(4 23 33 / 0%) 82%); }
.card:hover { color: white; }
.card:hover > img { transform: scale(1.035); filter: saturate(1); }
.card-body { width: 100%; display: flex; flex-direction: column; align-items: flex-start; align-self: end; padding: clamp(19px, 3vw, 32px); }
.card-kicker { margin: 0 0 10px; color: var(--brass); font-size: .61rem; }
.card h3 { max-width: 16ch; margin: 0; color: white; font: 800 clamp(1.65rem, 3vw, 2.5rem)/.98 var(--display); letter-spacing: -.015em; text-transform: uppercase; }
.card p:not(.card-kicker) { max-width: 46ch; margin: 10px 0 17px; color: #e0e9e5; font-size: .9rem; line-height: 1.5; }
.card .go { margin-top: auto; padding-top: 9px; border-top: 1px solid rgb(226 183 104 / 65%); color: white; font-size: .69rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.stamp { margin-top: 7px; color: #bdceca; font-size: .68rem; }
.related-guides { padding-block: 63px 78px; }
.related-guides .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 360px; }
.related-guides .card:first-child { grid-row: auto; min-height: 360px; }
.wrap > p { max-width: 76ch; }
.wrap > h2:not(.grid-title), .wrap > h3 { color: var(--sea-950); }
.wrap > h2:not(.grid-title) { margin-block: 55px 13px; font: 800 clamp(2rem, 4vw, 3.25rem)/.98 var(--display); text-transform: uppercase; }

.guide-cover { position: relative; overflow: hidden; isolation: isolate; background: var(--sea-950); color: white; border-bottom: 4px solid var(--brass); }
.guide-cover::before { z-index: 0; right: 52%; opacity: .24; }
.guide-cover-inner { min-height: 580px; display: grid; grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr); align-items: stretch; gap: 28px; padding-block: 36px 28px; }
.guide-cover-copy { position: relative; z-index: 2; align-self: center; padding-block: 22px; }
.trail { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 0 0 40px; color: #d8e4e0; font-size: .62rem; }
.trail a { color: var(--brass); text-decoration: none; }
.trail span { color: #728c91; }
.guide-cover .eyebrow { margin-bottom: 15px; }
.guide-cover h1 { max-width: 10ch; font-size: clamp(3.4rem, 6.1vw, 6.5rem); }
.cover-lead { max-width: 51ch; margin: 22px 0 0; color: #e5ece8; font-size: 1.03rem; line-height: 1.64; }
.cover-lead p { margin: 0; }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 23px 0 0; color: #bfd0cd; font-size: .61rem; }
.article-meta time { color: var(--brass); }
.guide-cover-figure { min-width: 0; min-height: 514px; position: relative; align-self: stretch; overflow: hidden; margin: 0; clip-path: polygon(12% 0, 100% 0, 100% 100%, 0 100%); }
.guide-cover-figure::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, rgb(7 30 42 / 22%), transparent 35%), linear-gradient(0deg, rgb(4 23 33 / 62%), transparent 26%); }
.guide-cover-figure img { display: block; width: 100%; height: 100%; min-height: 514px; object-fit: cover; object-position: center 48%; }
.guide-cover-figure figcaption { position: absolute; right: 19px; bottom: 13px; z-index: 1; color: white; font-size: .59rem; font-weight: 850; letter-spacing: .16em; text-transform: uppercase; }
.hub-cover .guide-cover-inner { min-height: 500px; }
.hub-cover .guide-cover-figure, .hub-cover .guide-cover-figure img { min-height: 430px; }
.hub-cover .guide-cover h1 { max-width: 9ch; }
.record-cover .guide-cover-inner { min-height: 400px; }
.record-cover .guide-cover h1 { font-size: clamp(3rem, 5.2vw, 5rem); }
.record-cover .guide-cover-figure, .record-cover .guide-cover-figure img { min-height: 345px; }

.article-wrap { padding-block: 66px 75px; background: var(--paper); }
.article-layout { display: grid; grid-template-columns: minmax(185px, .48fr) minmax(0, 1.65fr); align-items: start; gap: clamp(42px, 7vw, 106px); }
.article-layout > * { min-width: 0; }
.chapter-nav { position: sticky; top: 22px; padding-top: 6px; }
.chapter-nav > p { margin: 0 0 13px; color: var(--signal); font-size: .62rem; }
.chapter-nav ol { margin: 0; padding: 0; list-style: none; }
.chapter-nav li { border-top: 1px solid var(--line); }
.chapter-nav a { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 8px; padding: 9px 0; color: var(--ink); font-size: .79rem; line-height: 1.35; text-decoration: none; }
.chapter-nav a:hover { color: var(--signal); }
.chapter-nav a span { color: var(--signal); font: 800 .72rem/1.35 var(--display); }
article { max-width: 900px; margin: 0 auto; padding: 48px clamp(23px, 5vw, 62px); }
.guide-article { max-width: none; margin: 0; padding: 0; background: transparent; }
.record-article { background: var(--paper); border-top: 3px solid var(--brass); border-bottom: 1px solid var(--line); }
article > h1 { margin: 0 0 26px; color: var(--sea-950); font: 800 clamp(2.2rem, 5vw, 3.6rem)/.98 var(--display); letter-spacing: -.025em; text-transform: uppercase; text-wrap: balance; }
article h2 { color: var(--sea-950); text-wrap: pretty; }
.guide-article { counter-reset: chapter; }
.guide-article h2 { display: grid; grid-template-columns: 57px minmax(0, 1fr); align-items: baseline; gap: 16px; margin: 0 0 15px; padding: 40px 0 0; border-top: 1px solid var(--line); font: 800 clamp(1.8rem, 3.2vw, 2.7rem)/.99 var(--display); letter-spacing: -.015em; text-transform: uppercase; scroll-margin-top: 22px; }
.guide-article h2 + p { margin-top: 0; }
.guide-article h2::before { counter-increment: chapter; content: counter(chapter, decimal-leading-zero); color: var(--signal); font: 850 1.04rem/1 var(--display); letter-spacing: .02em; }
.guide-article h2 ~ h2 { margin-top: 49px; }
.record-article h2 { display: block; margin: 40px 0 12px; padding-top: 19px; border-top: 1px solid var(--line); font: 800 clamp(1.65rem, 3vw, 2.25rem)/1.04 var(--display); letter-spacing: -.01em; text-transform: uppercase; }
.record-article h2::before { content: ""; display: block; width: 38px; height: 3px; margin: 0 0 12px; background: var(--signal); }
article h3 { margin: 27px 0 7px; color: var(--sea-700); font: 750 1.08rem/1.35 var(--sans); }
article p, article li { max-width: 74ch; }
.record-article > p:first-child { margin-top: 0; color: #30484f; font-size: 1.08rem; line-height: 1.72; }
article li + li { margin-top: 7px; }
article ul, article ol { padding-left: 1.35em; }
article li::marker { color: var(--signal); font-weight: 850; }
article blockquote { margin: 25px 0; padding: 13px 19px; border-left: 3px solid var(--signal); background: #e5e3d8; color: #30484f; }
article img.zoom { display: block; width: 100%; max-height: 520px; margin: 24px auto 6px; object-fit: cover; cursor: zoom-in; }
.tbl-wrap { overflow-x: auto; margin: 25px 0; border-block: 1px solid var(--sea-700); }
table { width: 100%; min-width: 580px; border-collapse: collapse; background: transparent; }
th, td { padding: 11px 13px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--sea-900); color: white; font-size: .74rem; letter-spacing: .04em; }
tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) { background: rgb(255 255 255 / 48%); }
.callout { margin: 24px 0; padding: 14px 18px; border-left: 3px solid var(--brass); background: #e5e3d8; color: #30484f; }
.callout p:first-child { margin-top: 0; }
.callout p:last-child { margin-bottom: 0; }
.callout.caution { border-color: var(--signal); background: #f0e2d7; }
.muted { color: var(--muted); }
.guide-index { padding-bottom: 3px; }
.guide-index .logbook-section { margin-block: 50px; }
.hub-note { padding-block: 38px 70px; }

.foot { margin-top: 30px; padding: 35px 0 39px; border-top: 4px solid var(--brass); background: var(--sea-950); color: #e4eeec; font-size: .82rem; }
.foot a { color: var(--brass); }
.foot .disclaimer { max-width: 86ch; color: #c8d7d6; }
.foot-links { margin: 16px 0; }
.foot .muted { color: #a8bcbd; }

@media (max-width: 930px) {
  .wrap, .hero-in { width: min(100% - 44px, 1320px); }
  .bar { align-items: flex-start; flex-direction: column; gap: 7px; padding-block: 11px; }
  .nav { width: 100%; justify-content: space-between; gap: 8px; }
  .nav > ul { min-width: 0; overflow-x: auto; }
  .nav .cta { font-size: .72rem; }
  .hero { min-height: 670px; }
  .hero-in { padding-block: 67px; }
  .hero h1 { font-size: clamp(4rem, 9vw, 6.4rem); }
  .voyage-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 0; }
  .voyage-item:nth-child(odd) { padding-left: 0; border-left: 0; }
  .guide-cover-inner { min-height: 535px; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: 16px; }
  .guide-cover h1 { font-size: clamp(3.2rem, 6.7vw, 5.3rem); }
  .guide-cover-figure, .guide-cover-figure img { min-height: 470px; }
  .article-layout { grid-template-columns: minmax(155px, .58fr) minmax(0, 1.65fr); gap: 35px; }
  .grid { grid-auto-rows: minmax(230px, 1fr); }
  .card:first-child { min-height: 480px; }
}
@media (max-width: 620px) {
  .wrap, .hero-in { width: min(100% - 32px, 1320px); }
  .brand { font-size: .9rem; }
  .brand img { width: 38px; height: 38px; }
  .nav { align-items: flex-start; flex-direction: column; }
  .nav > ul { width: 100%; }
  .nav li > a { padding: 9px 9px; font-size: .72rem; }
  .nav .cta { padding: 7px 11px; }
  .hero { min-height: 650px; align-items: end; }
  .hero-image { width: 100%; clip-path: none; object-position: 62% 42%; }
  .hero-scrim { background: linear-gradient(90deg, rgb(7 30 42 / 72%), rgb(7 30 42 / 10%)), linear-gradient(0deg, var(--sea-950) 0%, rgb(7 30 42 / 91%) 27%, rgb(7 30 42 / 10%) 78%); }
  .hero::before { right: 0; }
  .hero-in { padding-block: 48px 57px; }
  .hero-index { margin-bottom: 26px; }
  .hero h1 { max-width: 8ch; font-size: clamp(3.75rem, 15vw, 5.2rem); }
  .hero .lead { max-width: 39ch; margin-top: 17px; font-size: 1rem; }
  .hero-cta { gap: 8px; margin-top: 20px; }
  .btn { min-height: 42px; padding: 8px 11px; font-size: .7rem; }
  .voyage-grid { padding-block: 17px 19px; }
  .voyage-item { padding-inline: 12px; }
  .voyage-item span { font-size: .55rem; }
  .voyage-item p { font-size: .84rem; }
  .logbook-section { margin-block: 48px 55px; }
  .logbook-heading { align-items: start; flex-direction: column; gap: 7px; margin-bottom: 12px; }
  .logbook-heading h2 { font-size: 2.25rem; }
  .grid { grid-template-columns: 1fr; grid-auto-rows: auto; gap: 11px; }
  .card, .card:first-child { grid-column: auto; grid-row: auto; min-height: 350px; }
  .card:first-child { min-height: 420px; }
  .card-body { padding: 19px; }
  .card h3 { font-size: 1.9rem; }
  .card p:not(.card-kicker) { font-size: .85rem; }
  .guide-cover-inner, .hub-cover .guide-cover-inner, .record-cover .guide-cover-inner { min-height: auto; grid-template-columns: 1fr; gap: 0; padding-block: 0 27px; }
  .guide-cover-figure, .guide-cover-figure img,
  .hub-cover .guide-cover-figure, .hub-cover .guide-cover-figure img,
  .record-cover .guide-cover-figure, .record-cover .guide-cover-figure img { grid-row: 1; width: 100%; min-height: 0; height: clamp(260px, 68vw, 340px); }
  .guide-cover-figure { clip-path: none; margin-inline: -16px; width: calc(100% + 32px); }
  .guide-cover-figure img { object-position: 58% 46%; }
  .guide-cover-figure figcaption { right: 15px; bottom: 10px; font-size: .52rem; }
  .guide-cover-copy { grid-row: 2; padding: 23px 0 0; }
  .trail { margin-bottom: 24px; font-size: .56rem; }
  .guide-cover .eyebrow { margin-bottom: 11px; font-size: .61rem; }
  .guide-cover h1, .hub-cover .guide-cover h1 { max-width: 10ch; font-size: clamp(3.25rem, 13vw, 4.7rem); }
  .record-cover .guide-cover h1 { font-size: clamp(2.8rem, 11vw, 4rem); }
  .cover-lead { margin-top: 15px; font-size: .94rem; }
  .article-meta { margin-top: 17px; font-size: .54rem; }
  .article-wrap { padding-block: 28px 43px; }
  .article-layout { grid-template-columns: 1fr; gap: 28px; }
  .chapter-nav { position: static; padding: 0 0 13px; border-bottom: 1px solid var(--line); }
  .chapter-nav > p { margin-bottom: 9px; }
  .chapter-nav ol { display: flex; width: 100%; max-width: 100%; gap: 0 16px; overflow-x: auto; padding-bottom: 3px; }
  .chapter-nav li { min-width: max-content; border-top: 0; }
  .chapter-nav a { display: flex; gap: 6px; padding: 5px 0; font-size: .72rem; }
  .guide-article h2 { grid-template-columns: 37px minmax(0, 1fr); gap: 9px; padding-top: 26px; font-size: 1.65rem; }
  .guide-article h2::before { font-size: .85rem; }
  .guide-article h2 ~ h2 { margin-top: 35px; }
  .guide-article p, .guide-article li { font-size: .94rem; }
  .related-guides { padding-block: 39px 50px; }
  .related-guides .logbook-heading h2 { font-size: 1.95rem; }
  .related-guides .grid { grid-template-columns: 1fr 1fr; grid-auto-rows: auto; gap: 8px; }
  .related-guides .card, .related-guides .card:first-child { min-height: 275px; }
  .related-guides .card-body { padding: 12px; }
  .related-guides .card h3 { font-size: 1.3rem; }
  .related-guides .card p:not(.card-kicker) { display: none; }
  .related-guides .card-kicker { font-size: .48rem; letter-spacing: .1em; }
  .related-guides .card .go { font-size: .53rem; }
  article { padding: 31px 19px; }
  .record-article h2 { margin-top: 34px; }
  table { min-width: 540px; }
  th, td { padding: 9px 10px; }
  .hub-note { padding-block: 22px 44px; }
  .foot { margin-top: 22px; padding-block: 28px 32px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}

/* lightbox：点击正文图全屏放大（build_site.py 注入结构） */
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(5,7,15,.94);display:flex;align-items:center;justify-content:center;padding:24px;cursor:zoom-out}
.lightbox img{max-width:min(1500px,96vw);max-height:92vh;width:auto;height:auto;border:2px solid var(--accent,#c9202a);box-shadow:8px 8px 0 rgba(0,0,0,.55)}
@media (max-width:700px){ .lightbox{padding:10px} }

/* Adsterra 广告位：默认隐藏，只给桌面真鼠标显示；未填充时留虚线占位框防塌 */
.ad-slot{display:none}
.ad-inner{min-height:90px;width:100%;border:1px dashed var(--line);background:var(--paper);border-radius:12px;overflow:hidden}
@media (hover: hover) and (pointer: fine){ .ad-slot{display:flex;justify-content:center} }
@media print{ .ad-slot{display:none} }