:root{color-scheme:light;--ultra-50: #f0f4fb;--ultra-100: #dfe8f6;--ultra-200: #c3d3ec;--ultra-500: #4a72b8;--ultra-600: #2e59a7;--ultra-700: #254a8a;--ultra-900: #142a52;--ultra-950: #0c1c38;--vermilion-500: #e60012;--vermilion-600: #c4000f;--vermilion-700: #9e000c;--vermilion-50: #fff0f1;--paper: #faf8f3;--paper-2: #f2efe7;--white: #ffffff;--rule: #dcd8cc;--rule-strong: #b9b4a4;--ink: #0f1b33;--ink-2: #3b4560;--ink-3: #5b6580;--cabin-fg: #ffffff;--cabin-fg-soft: rgba(255, 255, 255, .8);--cabin-fg-40: rgba(255, 255, 255, .4);--cabin-dot: rgba(255, 255, 255, .07);--cabin-dot-glow: rgba(255, 255, 255, .18);--cabin-shadow: rgba(12, 28, 56, .35);--state-related-fg: #12805c;--state-related-bg: #e6f4ee;--state-unrelated-fg: #0f1b33;--state-unrelated-bg: #eceef3;--state-near-fg: #8a4b00;--state-near-bg: #fff3dc;--state-unknown-fg: #5b6580;--state-unknown-bg: #eef0f4;--font-display: "NotoSerifSC-Sub", "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;--font-sans: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;--font-mono: "PlexMono-Sub", "IBM Plex Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;--fw-serif: 700;--fw-strong: 600;--fw-medium: 500;--fw-regular: 400;--fs-h1: 30px;--lh-h1: 40px;--fs-h2: 24px;--lh-h2: 34px;--fs-h3: 20px;--lh-h3: 30px;--fs-item: 16px;--lh-item: 24px;--fs-body: 16px;--lh-body: 26px;--fs-aux: 14px;--lh-aux: 22px;--fs-label: 12px;--lh-label: 18px;--fs-ticket-name: 17px;--lh-ticket-name: 26px;--fs-article-no: 48px;--lh-article-no: 48px;--ls-body: .02em;--ls-label: .08em;--ls-wordmark: .2em;--ls-stamp: .1em;--s-1: 4px;--s-2: 8px;--s-3: 12px;--s-4: 16px;--s-5: 24px;--s-6: 32px;--s-7: 48px;--s-8: 64px;--s-9: 96px;--block-pad-block: 64px;--block-title-gap: 32px;--r-1: 2px;--r-2: 4px;--r-pill: 999px;--shadow-1: 0 1px 0 rgba(15, 27, 51, .06);--shadow-2: 0 12px 32px -16px rgba(12, 28, 56, .35);--ease-out: cubic-bezier(.2, .8, .2, 1);--ease-stamp: cubic-bezier(.3, 1.6, .5, 1);--t-1: .12s;--t-2: .2s;--t-3: .36s;--gutter: 12px;--pad-x: 16px;--content-max: 800px;--cabin-w: clamp(480px, 38vw, 620px);--nav-h: 56px;--mini-bar-h: 44px;--searchbar-h: 56px;--chip-h: 32px;--sail-w: 12px;--sail-h: 8px;--dot-cell: 10px;--stamp-size: 72px;--safe-bottom: env(safe-area-inset-bottom, 0px);--footer-clear: 72px}@media(min-width:768px){:root{--gutter: 20px;--pad-x: 32px;--block-pad-block: 64px;--dot-cell: 12px;--stamp-size: 88px}}@media(min-width:1100px){:root{--gutter: 24px;--pad-x: clamp(32px, 4vw, 64px);--block-pad-block: 96px;--searchbar-h: 64px;--fs-h1: 40px;--lh-h1: 52px;--fs-h2: 28px;--lh-h2: 38px;--fs-h3: 22px;--lh-h3: 32px;--fs-body: 16px;--lh-body: 28px;--fs-aux: 14px;--lh-aux: 22px}}@media(prefers-reduced-motion:reduce){:root{--t-1: 0ms;--t-2: 0ms;--t-3: 0ms}}@font-face{font-family:NotoSerifSC-Sub;src:url(/fonts/serif-700.woff2) format("woff2");font-weight:700;font-style:normal;font-display:swap}@font-face{font-family:PlexMono-Sub;src:url(/fonts/mono-500.woff2) format("woff2");font-weight:500;font-style:normal;font-display:swap}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-block-start:calc(var(--nav-h) + var(--mini-bar-h) + var(--s-2))}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-sans);font-size:var(--fs-body);line-height:var(--lh-body);letter-spacing:var(--ls-body);font-kerning:normal;text-rendering:optimizeLegibility}h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}ul,ol{padding:0;list-style:none}img,svg{max-width:100%}a{color:var(--ultra-600);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;transition:color var(--t-1) var(--ease-out)}a:hover{color:var(--ultra-700);text-decoration-thickness:2px}::selection{background:var(--ultra-600);color:var(--white)}:focus-visible{outline:3px solid var(--ultra-600);outline-offset:2px;border-radius:var(--r-1)}.u-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding-inline:var(--s-5);border-radius:var(--r-2);font-family:var(--font-sans);font-size:15px;line-height:24px;font-weight:var(--fw-strong);text-decoration:none;cursor:pointer;border:1px solid transparent;transition:background-color var(--t-1) var(--ease-out),color var(--t-1) var(--ease-out),transform var(--t-1) var(--ease-out)}.u-btn:active{transform:translateY(1px)}.u-btn--primary{background:var(--ultra-600);color:var(--white)}.u-btn--primary:hover{background:var(--ultra-700);color:var(--white)}.u-btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink)}.u-btn--ghost:hover{background:var(--ultra-50);color:var(--ink)}.u-wrap-anywhere{overflow-wrap:anywhere}.u-visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.u-mono-label{font-family:var(--font-mono);font-weight:var(--fw-medium);font-size:var(--fs-label);line-height:var(--lh-label);letter-spacing:var(--ls-label);text-transform:uppercase}.u-skip-link{position:absolute;inset-inline-start:var(--s-4);inset-block-start:var(--s-2);z-index:99;padding:var(--s-2) var(--s-4);background:var(--ultra-950);color:var(--white);border-radius:var(--r-2);transform:translateY(-200%);transition:transform var(--t-1) var(--ease-out)}.u-skip-link:focus-visible{transform:translateY(0)}