@charset "UTF-8";
:root {
  --paper: #f2f0e7;
  --ink: #122e38;
  --muted: #53666c;
  --night: #081f29;
  --deep: #0d2b36;
  --sea: #184f57;
  --signal: #daef81;
  --orange: #a33d24;
  --coral: #ffa27d;
  --line: #cbd2c7;
  --wash: #e5e8dc;
  --white: #fffcf3;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", "Noto Sans JP", "Noto Sans SC", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
button { font: inherit; color: inherit; }
button, summary { cursor: pointer; }
a { color: inherit; text-decoration: none; }
p, h1, h2, h3, h4, figure { margin: 0; }
h1, h2, h3, h4 { line-height: 1.15; font-weight: 550; }
p { overflow-wrap: break-word; }
svg { display: block; }
[hidden] { display: none !important; }
::selection { background: var(--signal); color: var(--night); }
:is(button, a, summary, [tabindex="0"]):focus-visible { outline: 3px solid #d7783e; outline-offset: 5px; }
.wrap { width: min(1280px, calc(100% - 112px)); margin-inline: auto; }
.section { padding-block: 105px; }
.eyebrow { display: flex; align-items: center; gap: 13px; font: 10px/1.6 var(--mono); letter-spacing: .11em; color: var(--sea); margin-bottom: 28px; }
.small-line { width: 27px; height: 2px; background: currentColor; flex-shrink: 0; }
.brand { display: inline-flex; align-items: center; flex-shrink: 0; }
.brand-lockup { display: block; width: 220px; }
.brand-symbol { display: block; width: 40px; max-width: 100%; flex-shrink: 0; }
.brand-lockup img, .brand-symbol img { display: block; width: 100%; height: auto; }
.header-shell, .opening { background: var(--night); color: var(--paper); }
.header-shell { position: relative; z-index: 5; }
.header { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 26px; border-bottom: 1px solid #a0bec126; }
.main-nav { display: flex; gap: 30px; font-size: 12px; }
.main-nav a { padding: 13px 0; color: #c4d0d0; }
.main-nav a:hover { color: var(--signal); }
.header-actions { display: flex; align-items: center; gap: 24px; }
.header-github { display: flex; align-items: center; gap: 20px; padding: 9px 15px; border: 1px solid #75929866; font-size: 11px; }
.header-github:hover { border-color: var(--signal); color: var(--signal); }
.language-menu { position: relative; font: 11px var(--mono); }
.language-menu summary { list-style: none; min-height: 44px; display: flex; align-items: center; gap: 7px; }
.language-menu summary::-webkit-details-marker { display: none; }
.language-menu nav { position: absolute; right: 0; top: 46px; min-width: 160px; background: var(--deep); border: 1px solid #75929866; padding: 8px; box-shadow: 0 15px 30px #0005; }
.language-menu nav a { display: flex; align-items: center; justify-content: space-between; padding: 10px; gap: 20px; min-height: 43px; font-family: var(--sans); }
.language-menu nav a:hover, .language-menu nav a[aria-current] { background: #d9ef8116; color: var(--signal); }
.hero { padding-block: 64px 0; }
.hero-copy { display: grid; grid-template-columns: 1.7fr 1fr; gap: 60px; align-items: end; }
.hero-copy > * { min-width: 0; }
.hero .eyebrow { color: var(--signal); }
.hero h1 { font-size: clamp(46px, 5.25vw, 77px); line-height: 1.02; letter-spacing: -.065em; max-width: 820px; font-weight: 550; }
.hero h1 em { display: block; color: var(--signal); font-style: normal; margin-top: 7px; }
.hero-description { color: #b9cbcf; font-size: 14px; line-height: 1.85; max-width: 350px; }
.hero-intro { padding-bottom: 5px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 38px; min-height: 52px; padding: 14px 22px; background: var(--ink); border: 1px solid var(--ink); color: var(--paper); font-size: 12px; transition: background .2s, transform .2s; }
.button > span { font-size: 20px; line-height: 1; }
.button:hover { background: var(--sea); transform: translateY(-2px); }
.hero .button { margin-top: 23px; background: var(--signal); border-color: var(--signal); color: var(--night); }
.hero .button:hover { background: #e9fba3; }
.status { display: flex; align-items: center; gap: 8px; margin-top: 16px; font: 9px/1.7 var(--mono); color: var(--muted); }
.status-dot { width: 5px; height: 5px; background: var(--orange); border-radius: 50%; flex-shrink: 0; }
.hero .status { color: #91aeb4; }
.hero .status-dot { background: var(--signal); }
.pier { margin-top: 48px; position: relative; isolation: isolate; padding: 22px 32px 12px; background: var(--deep); border: 1px solid #65848b55; overflow: hidden; }
.pier::before, .pier::after { content: ""; position: absolute; width: 12px; height: 12px; border-color: var(--signal); border-style: solid; }
.pier::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.pier::after { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }
.harbor-contours { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; opacity: .45; }
.harbor-contours path { stroke: #75a1a4; stroke-width: .55; }
.pier figcaption { display: flex; justify-content: space-between; gap: 20px; font: 9px var(--mono); letter-spacing: .12em; color: #a5c0c5; }
.diagram-key::before { content: "+"; color: var(--signal); margin-right: 12px; }
.diagram-coordinate { color: #73969e; }
.hero-route { display: grid; grid-template-columns: 1fr .75fr 1.08fr .75fr 1fr; align-items: center; padding: 38px 35px 25px; }
.route-node { min-width: 0; }
.hero-route .route-node { position: relative; min-height: 166px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 20px 13px; background: #0d2b36e8; border: 1px solid #73959d70; }
.hero-route .node-index { position: absolute; top: 8px; left: 11px; font: 8px var(--mono); color: #7d9da4; }
.hero-route svg { width: 36px; height: 36px; margin-bottom: 14px; color: #c4d8d8; }
.hero-route strong { font-size: 17px; font-weight: 500; letter-spacing: -.03em; }
.hero-route .route-node > span:not(.node-index) { font-size: 9px; line-height: 1.6; color: #9bb8bd; margin-top: 9px; max-width: 180px; }
.hero-route .pier-core { min-height: 190px; background: var(--signal); color: var(--night); border-color: var(--signal); box-shadow: 7px 7px 0 #020e17; }
.hero-route .pier-core .brand-symbol { width: 112px; margin-bottom: 6px; }
.hero-route .pier-core strong { font-size: 30px; font-weight: 650; letter-spacing: -1.4px; }
.hero-route .pier-core .node-index, .hero-route .pier-core > span:not(.node-index) { color: #43572e; }
.hero-route .pier-assistant { border-radius: 75px 75px 3px 3px; }
.hero-route .pier-assistant .node-index { top: auto; bottom: 10px; left: 50%; transform: translateX(-50%); }
.protocol-edge { position: relative; min-width: 0; align-self: center; height: 44px; display: flex; align-items: flex-end; justify-content: center; }
.protocol-label { position: absolute; top: 0; font: 11px/1.2 var(--mono); white-space: nowrap; color: var(--signal); letter-spacing: .04em; }
.protocol-line { position: absolute; top: 29px; left: 0; right: 0; height: 1px; background: currentColor; color: var(--signal); }
.protocol-line::before { content: ""; position: absolute; top: -3px; left: 0; height: 7px; width: 7px; border-radius: 50%; background: currentColor; }
.protocol-line::after { content: ""; position: absolute; right: 2px; top: -4px; width: 8px; height: 8px; border-top: 1px solid; border-right: 1px solid; transform: rotate(45deg); }
.pier-foot { display: flex; justify-content: space-between; align-items: end; color: #87a8b16b; font: 8px var(--mono); letter-spacing: .12em; padding-top: 8px; }
.pier-foot > span:first-child { font: 650 42px/.9 var(--sans); letter-spacing: -.06em; color: #b8d4da16; }
.horizon { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-block: 22px 27px; font: 9px var(--mono); color: #92b1b8; }
.horizon > span:first-child { font-size: 19px; color: var(--signal); }
.horizon i { font-style: normal; margin-inline: 15px; color: #496c75; }
.dark-section { background: var(--night); color: var(--paper); }
.story { background: #e9e5da; color: var(--ink); padding: 100px 0 34px; border-bottom: 1px solid var(--line); }
.story-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 60px; }
.story h2 { font-size: clamp(31px, 3.6vw, 50px); line-height: 1.14; letter-spacing: -.05em; text-wrap: balance; }
.muted { color: #afc5ca; font-size: 14px; line-height: 1.9; margin-top: 25px; max-width: 480px; }
.story .muted { color: var(--muted); }
.story .eyebrow { color: var(--orange); }
.workaround { padding: 27px 30px 30px; border: 1px dashed #b59582; background: #f6efe3; position: relative; transform: rotate(1.5deg); box-shadow: 9px 9px 0 #d9d5c8; align-self: start; }
.route-label { font: 10px var(--mono); letter-spacing: .07em; text-transform: uppercase; color: var(--orange); padding-bottom: 16px; border-bottom: 1px solid #c9b8a280; }
.old-route { display: flex; list-style: none; padding: 0; margin: 28px 0; gap: 15px; }
.old-route li { position: relative; flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 10px; font-size: 9px; color: #6c5e54; }
.route-icon { display: grid; place-items: center; width: 54px; height: 47px; border: 1px solid #a79f8c; font-size: 23px; }
.old-route li:nth-child(2) .route-icon { border: 1px dashed var(--orange); background: #b7503012; color: var(--orange); }
.route-arrow { position: absolute; right: -16px; top: 8px; font-size: 20px; color: #ae7358; }
.workaround h3 { font-size: 23px; line-height: 1.35; letter-spacing: -.035em; color: #813d2a; }
.workaround > p:last-child { color: #6e6256; font-size: 12px; line-height: 1.9; margin-top: 17px; }
.story-turn { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; gap: 20px; border-top: 1px solid #b6b5a6; padding-top: 25px; font-size: 19px; letter-spacing: -.03em; }
.story-turn > span { font-size: 30px; color: var(--orange); }
.section-heading { display: grid; grid-template-columns: 1.15fr 1fr; align-items: center; column-gap: 100px; margin-bottom: 45px; }
.section-heading .eyebrow { grid-column: 1 / -1; }
.section-heading h2, .control h2, .developers h2 { font-size: clamp(35px, 3.8vw, 54px); letter-spacing: -.055em; line-height: 1.12; }
.section-heading > p:last-child { max-width: 440px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.connection-explorer { display: grid; grid-template-columns: 265px 1fr; border: 1px solid #879d91; background: #e8ece0; }
.source-picker { padding: 30px; border-right: 1px solid #879d9155; }
.source-picker h3 { font-size: 15px; }
.source-picker > p { margin-top: 10px; color: var(--muted); font-size: 11px; line-height: 1.7; }
.tabs { display: none; }
.js .tabs { display: flex; }
.provider-tabs { flex-direction: column; gap: 7px; margin-top: 26px; }
.provider-tabs button { display: flex; align-items: center; gap: 10px; border: 1px solid transparent; background: transparent; padding: 11px; min-height: 43px; text-align: left; font-size: 11px; }
.provider-tabs button[aria-selected="true"] { background: var(--ink); color: var(--signal); border-color: var(--ink); }
.provider-check { margin-left: auto; opacity: 0; }
.provider-tabs button[aria-selected="true"] .provider-check { opacity: 1; }
.provider-dot { width: 7px; height: 7px; border-radius: 50%; border: 1px solid currentColor; margin: 0 3px; }
.tiny-mail { font-size: 16px; line-height: 1; }
.connection-result { padding: 35px 32px 28px; min-width: 0; display: flex; flex-direction: column; justify-content: center; }
.new-route { display: grid; grid-template-columns: 1fr .85fr 1fr .85fr 1fr; align-items: center; gap: 0; }
.new-route .route-node { display: flex; align-items: center; flex-direction: column; justify-content: center; gap: 12px; min-height: 112px; padding: 13px 6px; font-size: 11px; text-align: center; line-height: 1.4; }
.new-route svg { height: 32px; width: 35px; }
.new-route .brand-symbol { width: 64px; }
.new-route .route-pier { color: var(--signal); background: var(--ink); border: 1px solid var(--ink); }
.new-route .protocol-label { color: var(--sea); font-size: 9px; letter-spacing: 0; }
.new-route .protocol-line { color: var(--sea); }
.route-legend { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 25px; font: 7px/1.8 var(--mono); letter-spacing: .05em; color: var(--muted); text-align: center; margin-top: 18px; }
.provider-panel { border-top: 1px solid #879d9155; padding-top: 22px; margin-top: 24px; font-size: 12px; line-height: 1.9; color: var(--muted); }
.js .no-js-label { display: none; }
.fine-print { font-size: 10px; color: var(--muted); line-height: 1.85; margin-top: 18px; max-width: 880px; }
.day { background: #e3e7dc; border-block: 1px solid #b4c3b14d; }
.story-tabs { gap: 0; border: 1px solid #93a38c; margin-bottom: 46px; width: max-content; max-width: 100%; }
.story-tabs button { background: transparent; border: 0; border-right: 1px solid #93a38c; padding: 16px 25px; min-height: 49px; font-size: 12px; color: #526452; }
.story-tabs button:last-child { border-right: 0; }
.story-tabs button > span { font: 10px var(--mono); margin-right: 13px; opacity: .7; }
.story-tabs button[aria-selected="true"] { background: var(--ink); color: var(--signal); }
.day-panel { display: grid; grid-template-columns: 1fr 1.15fr; align-items: center; gap: 85px; min-height: 470px; }
.scene-number { display: flex; align-items: baseline; gap: 15px; font: 500 105px/.9 var(--sans); letter-spacing: -.085em; color: #9aaf94; }
.scene-number > span { font: 9px var(--mono); color: var(--muted); letter-spacing: 0; }
.scene-copy h3 { font-size: 29px; letter-spacing: -.045em; line-height: 1.3; margin-top: 28px; max-width: 430px; }
.scene-copy > p { font-size: 13px; line-height: 1.9; color: var(--muted); margin-top: 22px; max-width: 430px; }
.scene-action { display: flex; gap: 12px; font-size: 11px; border-top: 1px solid #a9baa3; padding-top: 22px; margin-top: 26px; }
.scene-action > span { color: var(--orange); }
.text-link { display: inline-flex; align-items: center; gap: 18px; font-size: 12px; padding-block: 10px; font-weight: 550; background: none; border: 0; text-decoration: underline; text-underline-offset: 5px; text-decoration-color: #72897e88; }
.text-link:hover { color: var(--orange); }
.next-scene { display: none; margin-top: 16px; }
.js .next-scene { display: inline-flex; }
.scene-visual { align-self: start; min-height: 470px; background: var(--white); border: 1px solid #819a81; box-shadow: 10px 10px 0 #c1cdb9; padding: 0 28px 26px; }
.scene-bar { display: flex; justify-content: space-between; gap: 10px; align-items: center; margin: 0 -28px; padding: 14px 18px; background: var(--ink); color: #b7cbc9; font: 8px var(--mono); letter-spacing: .05em; }
.scene-dots { font-size: 7px; letter-spacing: 3px; color: #a9c493; }
.chat-header { display: flex; gap: 10px; align-items: center; padding-block: 24px; font-size: 12px; font-weight: 550; }
.chat-header svg { width: 23px; height: 23px; color: var(--sea); }
.chat-prompt { border-left: 2px solid #87a77d; background: #edf0e3; padding: 14px 17px; }
.chat-prompt > span { font: 9px var(--mono); color: var(--muted); }
.chat-prompt p { font-size: 13px; line-height: 1.7; margin-top: 4px; }
.chat-answer { font-size: 12px; line-height: 1.8; color: var(--muted); margin-block: 18px; }
.mail-example { padding: 18px 20px; background: #f6f3e9; border: 1px solid #d3d4c4; }
.mail-source { display: flex; gap: 8px; font-size: 9px; color: var(--sea); }
.mail-example h4 { font-size: 13px; font-weight: 600; margin-top: 14px; }
.mail-example > p:not(.mail-source) { font-size: 11px; color: var(--muted); line-height: 1.85; margin-top: 10px; }
.mail-tag { display: inline-block; font: 8px var(--mono); color: var(--sea); border-bottom: 1px solid #9eb694; padding-bottom: 4px; margin-top: 18px; }
.control { display: grid; grid-template-columns: 1fr 1.15fr; gap: 85px; }
.principles { border-top: 1px solid #9cae9a; }
.principles article { display: flex; gap: 30px; padding: 26px 0; border-bottom: 1px solid #b9c5b4; }
.principle-index { padding-top: 4px; color: var(--orange); font: 10px var(--mono); }
.principles h3 { font-size: 20px; letter-spacing: -.035em; }
.principles p { font-size: 13px; color: var(--muted); line-height: 1.9; margin-top: 12px; }
.developers { position: relative; overflow: hidden; }
.developer-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px 85px; }
.developers .eyebrow { color: var(--signal); }
.developers h2 { color: var(--signal); }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 25px 0; }
.badges span { border: 1px solid #5f87904d; padding: 5px 11px; font: 10px/1.5 var(--mono); color: #b6cdd0; }
.developers .text-link { display: flex; width: max-content; max-width: 100%; color: #d4e0d9; }
.terminal { background: #0b2a35; border: 1px solid #65878d70; }
.terminal-heading { display: flex; align-items: center; gap: 23px; padding: 14px 20px; border-bottom: 1px solid #65878d50; font: 8px var(--mono); color: #9dbcc2; }
.terminal-body { padding: 30px 22px; display: flex; flex-direction: column; align-items: center; text-align: center; font: 12px/1.6 var(--mono); color: #b5ccd1; overflow-wrap: anywhere; }
.terminal-line { font-size: 12px; line-height: 1.2; color: #527c85; margin-block: 10px; }
.terminal-core { display: flex; align-items: center; gap: 8px; color: var(--signal); }
.terminal-core .brand-symbol { width: 36px; }
.dev-steps { list-style: none; margin: 25px 0 0; padding: 0; }
.dev-steps li { display: flex; gap: 18px; padding: 11px 0; }
.dev-steps li > span { padding-top: 4px; font: 9px var(--mono); color: var(--signal); }
.dev-steps strong { font-size: 12px; font-weight: 500; }
.dev-steps p { font-size: 11px; color: #9fbac1; margin-top: 3px; }
.developer-note { grid-column: 1 / -1; border-top: 1px solid #75919b45; padding-top: 22px; color: #9fbac1; font-size: 10px; }
.faq { display: grid; grid-template-columns: 1fr 1.5fr; gap: 65px; }
.faq h2 { font-size: 36px; letter-spacing: -.045em; }
.faq details { border-top: 1px solid #b9c2b3; }
.faq details:last-child { border-bottom: 1px solid #b9c2b3; }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 25px 0; font-size: 14px; font-weight: 500; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary > span { font-size: 24px; line-height: 1; color: var(--sea); transition: transform .2s; }
.faq details[open] summary > span { transform: rotate(45deg); }
.faq details p { padding: 0 25px 25px 0; font-size: 13px; line-height: 1.9; color: var(--muted); }
.assistant-connections { border: 1px solid #b9c2b3; background: #f8f8ed; margin-bottom: 18px; }
.assistant-connection { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 18px; padding: 22px; }
.assistant-connection + .assistant-connection { border-top: 1px solid #d1d7c8; }
.assistant-connection h3 { font-size: 16px; line-height: 1.4; letter-spacing: -.035em; }
.assistant-method { display: inline-block; margin-top: 10px; color: var(--sea); font: 9px/1.6 var(--mono); }
.faq .assistant-connection p { padding: 0; font-size: 12px; line-height: 1.85; }
.assistant-sources { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 12px; }
.faq-source-link { font-size: 10px; color: var(--sea); text-decoration: underline; text-underline-offset: 3px; }
.faq-source-link:hover { color: var(--orange); }
.faq .assistant-validation { font-size: 10px; line-height: 1.85; padding-right: 0; }
.assistant-validation > span { display: block; font: 9px/1.8 var(--mono); margin-bottom: 7px; color: var(--sea); }
.closing { text-align: center; padding: 67px 30px 60px; background: var(--signal); border: 1px solid #b8cc63; position: relative; }
.closing-mark { display: flex; justify-content: center; margin-bottom: 25px; }
.closing-mark .brand-symbol { width: 112px; }
.closing .eyebrow { justify-content: center; color: #4f6233; font-size: 9px; margin-bottom: 22px; }
.closing h2 { font-size: clamp(38px, 4.6vw, 65px); line-height: 1.1; letter-spacing: -.06em; text-wrap: balance; }
.closing > p:not(.eyebrow):not(.status) { font-size: 13px; color: #4b5e37; max-width: 520px; margin: 22px auto 0; line-height: 1.85; }
.closing-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 30px; margin-top: 28px; }
.closing .status { justify-content: center; color: #4c613a; }
.footer { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 65px; padding-bottom: 25px; }
.footer .brand-lockup { width: 210px; }
.footer p { font-size: 10px; color: var(--muted); margin-top: 13px; }
.footer-right { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; font-size: 10px; }
.footer-right > span { font: 11px var(--mono); margin-top: 9px; }
.footer-right small { font-size: 10px; color: var(--muted); }
.footer-note { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 20px; font-size: 9px !important; }
.skip-link { position: fixed; top: 8px; left: 8px; transform: translateY(-160%); background: var(--white); padding: 12px 18px; z-index: 99; }
.skip-link:focus { transform: translateY(0); }
html:lang(ko) { word-break: keep-all; }
html:lang(ja), html:lang(zh) { word-break: normal; }
html:lang(ko) .hero h1, html:lang(ja) .hero h1, html:lang(zh) .hero h1 { font-size: clamp(34px, 3.9vw, 56px); line-height: 1.3; letter-spacing: -.065em; }
html:lang(ko) h2, html:lang(ja) h2, html:lang(zh) h2 { line-height: 1.35; }
html:lang(ko) .story h2, html:lang(ja) .story h2, html:lang(zh) .story h2 { font-size: clamp(29px, 3.2vw, 45px); }
@media (max-width: 1100px) {
  .wrap { width: calc(100% - 72px); }
  .header-github { display: none; }
  .main-nav { gap: 23px; }
  .hero-copy { grid-template-columns: 1.5fr 1fr; gap: 40px; }
  .hero h1 { font-size: 58px; }
  .hero-route { padding-inline: 0; grid-template-columns: 1fr .7fr 1.08fr .7fr 1fr; }
  .hero-route strong { font-size: 14px; }
  .hero-route .pier-core strong { font-size: 27px; }
  .section-heading { column-gap: 50px; }
  .day-panel, .control, .developer-grid { gap: 50px; }
  .connection-explorer { grid-template-columns: 230px 1fr; }
  .source-picker { padding: 24px 20px; }
  .connection-result { padding-inline: 24px; }
  .workaround { padding-inline: 24px; }
  .story-grid { gap: 45px; }
  .section { padding-block: 85px; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 40px); }
  .header { min-height: 74px; }
  .brand-lockup { width: 190px; }
  .main-nav { display: none; }
  .assistant-connection { grid-template-columns: 1fr; gap: 12px; padding: 20px; }
  .assistant-connection > div:first-child { display: flex; flex-wrap: wrap; align-items: baseline; gap: 5px 12px; }
  .assistant-method { margin-top: 0; }
  .hero { padding-top: 43px; }
  .hero-copy { grid-template-columns: 1fr; gap: 25px; }
  .eyebrow { font-size: 9px; margin-bottom: 23px; }
  .hero h1 { font-size: clamp(39px, 7.7vw, 57px); max-width: 650px; line-height: 1.04; }
  .hero-description { font-size: 13px; max-width: 570px; }
  .hero .button { margin-top: 22px; }
  .hero .status { display: inline-flex; margin-left: 17px; font-size: 8px; }
  .pier { margin-top: 32px; padding: 18px 21px 12px; }
  .pier figcaption { font-size: 8px; letter-spacing: .05em; }
  .hero-route { padding-top: 30px; grid-template-columns: 1fr .65fr 1fr .65fr 1fr; }
  .hero-route .route-node { min-height: 145px; padding-inline: 9px; }
  .hero-route .pier-core { min-height: 166px; box-shadow: 5px 5px 0 #020e17; }
  .hero-route strong { font-size: 13px; }
  .hero-route .pier-core strong { font-size: 24px; }
  .hero-route .route-node > span:not(.node-index) { font-size: 8px; }
  .protocol-label { font-size: 10px; }
  .pier-foot > span:first-child { font-size: 33px; }
  .horizon { font-size: 8px; gap: 12px; padding-block: 20px; }
  .horizon i { margin-inline: 6px; }
  .horizon > span:last-child { display: none; }
  .story { padding: 65px 0 25px; }
  .story-grid { grid-template-columns: 1fr; gap: 34px; }
  .story h2 { font-size: 37px; max-width: 570px; }
  .muted { font-size: 13px; margin-top: 20px; max-width: 580px; }
  .workaround { margin: 5px 5px 8px 0; padding: 22px 24px 26px; box-shadow: 7px 7px 0 #d9d5c8; }
  .old-route { max-width: 500px; margin-inline: auto; }
  .workaround h3 { font-size: 24px; }
  .workaround > p:last-child { font-size: 12px; }
  .story-turn { font-size: 17px; padding-top: 20px; }
  .section { padding-block: 65px; }
  .section-heading { grid-template-columns: 1fr; gap: 0; margin-bottom: 32px; }
  .section-heading h2, .control h2, .developers h2 { font-size: 37px; }
  .section-heading > p:last-child { font-size: 13px; margin-top: 22px; max-width: 600px; }
  .connection-explorer { grid-template-columns: 1fr; }
  .source-picker { padding: 22px; border-right: 0; border-bottom: 1px solid #879d9155; }
  .provider-tabs { flex-direction: row; flex-wrap: wrap; gap: 5px; margin-top: 20px; }
  .provider-tabs button { padding: 9px 10px; font-size: 10px; gap: 6px; }
  .provider-check { display: none; }
  .connection-result { padding: 25px 22px 23px; }
  .new-route .route-node { font-size: 10px; min-height: 100px; }
  .new-route .protocol-label { font-size: 8px; }
  .route-legend { font-size: 7px; gap: 12px; }
  .provider-panel { font-size: 12px; }
  .fine-print { font-size: 10px; }
  .story-tabs { width: 100%; margin-bottom: 30px; }
  .story-tabs button { flex: 1; font-size: 11px; padding: 13px 8px; }
  .story-tabs button > span { font-size: 9px; margin-right: 6px; }
  .day-panel { grid-template-columns: 1fr; gap: 30px; min-height: 0; }
  .scene-number { font-size: 80px; }
  .scene-copy h3 { font-size: 27px; max-width: none; margin-top: 22px; }
  .scene-copy > p { max-width: none; font-size: 13px; margin-top: 18px; }
  .scene-action { margin-top: 20px; padding-top: 18px; }
  .scene-visual { min-height: 440px; margin-right: 7px; padding-inline: 23px; }
  .scene-bar { margin-inline: -23px; }
  .control { grid-template-columns: 1fr; gap: 30px; }
  .principles article { padding-block: 23px; }
  .developer-grid { grid-template-columns: 1fr; gap: 33px; }
  .terminal-body { font-size: 11px; }
  .faq { grid-template-columns: 1fr; gap: 28px; }
  .faq h2 { font-size: 32px; }
  .faq summary { font-size: 13px; padding-block: 22px; }
  .faq details p { font-size: 12px; padding-right: 10px; }
  .closing { padding: 46px 22px; }
  .closing h2 { font-size: 39px; }
  .closing-actions { gap: 14px 24px; }
  .footer { margin-top: 45px; gap: 28px; }
  .footer-right small { max-width: 150px; text-align: right; }
  html:lang(ko) .hero h1, html:lang(ja) .hero h1, html:lang(zh) .hero h1 { font-size: clamp(29px, 5.6vw, 43px); }
  html:lang(ko) .story h2, html:lang(ja) .story h2, html:lang(zh) .story h2 { font-size: 31px; }
  html:lang(ko) .section-heading h2, html:lang(ja) .section-heading h2, html:lang(zh) .section-heading h2 { font-size: 34px; }
}
@media (max-width: 520px) {
  .hero .status { display: flex; margin-left: 0; }
  .hero-route { grid-template-columns: 1fr; justify-items: center; padding: 24px 10px 16px; }
  .hero-route .route-node { width: 100%; max-width: 255px; min-height: 92px; display: grid; grid-template-columns: 42px 1fr; grid-template-rows: auto auto; align-content: center; column-gap: 16px; text-align: left; padding: 18px 22px 18px 29px; }
  .hero-route .route-node svg { grid-row: 1 / 3; margin: 0; width: 32px; height: 32px; }
  .hero-route strong { font-size: 15px; }
  .hero-route .route-node > span:not(.node-index) { font-size: 9px; margin-top: 4px; }
  .hero-route .node-index { top: 5px; left: 7px; font-size: 7px; }
  .hero-route .pier-core { min-height: 108px; grid-template-columns: 64px 1fr; column-gap: 12px; padding-inline: 14px; }
  .hero-route .pier-core .brand-symbol { width: 64px; grid-row: 1 / 3; margin: 0; }
  .hero-route .pier-core strong { font-size: 27px; }
  .hero-route .pier-assistant { border-radius: 3px 30px 3px 3px; grid-template-rows: auto; }
  .hero-route .pier-assistant .node-index { top: 5px; bottom: auto; left: 7px; transform: none; }
  .hero-route .protocol-edge { width: 100%; max-width: 255px; height: 58px; }
  .hero-route .protocol-line { width: 1px; height: auto; left: 50%; top: 0; bottom: 0; right: auto; }
  .hero-route .protocol-line::before { top: 0; left: -3px; }
  .hero-route .protocol-line::after { top: auto; bottom: 3px; left: -4px; right: auto; transform: rotate(135deg); }
  .hero-route .protocol-label { left: calc(50% + 15px); top: 22px; font-size: 10px; }
  .diagram-coordinate { display: none; }
  .pier-foot > span:first-child { font-size: 31px; }
  .pier-foot > span:last-child { font-size: 7px; }
  .new-route { grid-template-columns: 1fr; justify-items: center; }
  .new-route .route-node { flex-direction: row; gap: 13px; width: 100%; max-width: 240px; min-height: 62px; padding: 13px 18px; font-size: 12px; }
  .new-route .route-node svg { width: 26px; height: 26px; }
  .new-route .protocol-edge { width: 100%; height: 43px; }
  .new-route .protocol-line { width: 1px; height: auto; left: 50%; top: 0; bottom: 0; right: auto; }
  .new-route .protocol-line::before { top: 0; left: -3px; }
  .new-route .protocol-line::after { top: auto; bottom: 3px; left: -4px; right: auto; transform: rotate(135deg); }
  .new-route .protocol-label { left: calc(50% + 15px); top: 15px; font-size: 9px; }
  .route-legend { display: none; }
  .story-tabs button > span { display: block; text-align: left; margin-bottom: 5px; }
  .story-tabs button { font-size: 10px; }
  .workaround h3 { font-size: 21px; }
  .closing h2 { font-size: 34px; }
}
@media (max-width: 370px) {
  .wrap { width: calc(100% - 32px); }
  .header .brand-lockup { width: 160px; }
  .hero h1 { font-size: 36px; }
  .pier { padding-inline: 16px; }
  .source-picker, .connection-result { padding-inline: 17px; }
  .provider-tabs button { padding-inline: 7px; }
  .scene-visual { padding-inline: 18px; }
  .scene-bar { margin-inline: -18px; }
  .footer { grid-template-columns: 1fr; }
  .footer-right { align-items: flex-start; }
  .footer-right small { text-align: left; max-width: none; }
  html:lang(ko) .story h2, html:lang(ja) .story h2, html:lang(zh) .story h2 { font-size: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .button:hover { transform: none; }
}
@media print {
  .header-actions, .main-nav, .tabs, .next-scene, .button, .closing-actions, .harbor-contours { display: none !important; }
  body, .header-shell, .opening, .dark-section { background: white; color: black; }
  .wrap { width: 100%; }
  .section, .story, .hero { padding-block: 24px; }
  .hero h1 em, .muted, .eyebrow, .dark-section p { color: #333; }
  .hero-copy, .story-grid, .section-heading, .day-panel, .control, .developer-grid, .faq { display: block; }
  .provider-panel[hidden], .day-panel[hidden] { display: block !important; }
  .day-panel { break-inside: avoid; }
  .scene-visual, .workaround { box-shadow: none; min-height: 0; margin: 20px 0; transform: none; }
  .no-js-label { display: block !important; }
  .terminal, .new-route .route-pier { background: white; color: #333; border-color: #999; }
  .terminal-core, .terminal-line { color: #333; }
}