:root {
  --s1: 8px;
  --s2: 12px;
  --s3: 16px;
  --s4: 24px;
  --s5: 40px;
  --s6: 64px;
  --s7: 96px;
  --h1: 60px;
  --h2: 36px;
  --h3: 22px;
  --body: 16px;
  --small: 13px;
  --radius-pill: 999px;
  --radius-card: 24px;
  --radius-ui: 14px;
  --canvas: #F1F3F0;
  --paper: #FCFDFB;
  --ink: #17201C;
  --ink-soft: #37413C;
  --muted: #5E6862;
  --line: #D7DDD8;
  --brand: #285B49;
  --brand-strong: #1E493A;
  --brand-soft: #E3EEE8;
  --accent: #D39B3A;
  --accent-soft: #F5EBD8;
  --danger: #A9473F;
  --danger-soft: #F6E5E2;
  --night: #25312C;
  --night-raised: #2B3832;
  --night-hover: #314039;
  --night-line: #52605A;
  --night-muted: #C5CDC9;
  --night-copy: #DCE2DF;
  --brand-line: #5F8174;
  --accent-ink: #6B4A12;
  --accent-copy: #60491F;
  --shadow-float: 0 12px 30px rgba(23, 32, 28, .06);
  --wrap: 1180px;
  --header-h: 68px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + var(--s4)); }
body { margin: 0; min-width: 320px; background: var(--canvas); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: var(--body); line-height: 1.65; }
body, button, input { font-family: inherit; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: wait; opacity: .62; }
img, svg { display: block; max-width: 100%; }
[hidden], .hidden { display: none !important; }
.wrap { width: min(var(--wrap), calc(100% - 48px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.site-header { position: sticky; top: 0; z-index: 30; min-height: var(--header-h); background: rgba(241, 243, 240, .96); border-bottom: 1px solid var(--line); }
.header-inner { min-height: var(--header-h); display: flex; align-items: center; gap: var(--s4); }
.brand-link { display: inline-flex; align-items: center; gap: 10px; flex: none; font-weight: 700; letter-spacing: -.02em; }
.brand-name { display: inline-block; max-width: 12ch; overflow: visible; color: inherit; white-space: nowrap; }
.brand-link img { width: 34px; height: 34px; }
.primary-nav { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.primary-nav a, .mobile-nav-drawer a { padding: 8px 12px; border-radius: var(--radius-pill); color: var(--ink-soft); font-size: 14px; font-weight: 600; }
.primary-nav a:hover, .primary-nav a[aria-current] { background: var(--paper); color: var(--brand); }
.nav-actions { display: flex; align-items: center; gap: var(--s1); }
.nav-action { min-height: 40px; display: inline-flex; align-items: center; justify-content: center; padding: 0 15px; border: 1px solid var(--line); border-radius: var(--radius-pill); background: var(--paper); color: var(--ink); font-size: 14px; font-weight: 600; }
.nav-action:hover { background: var(--brand-soft); color: var(--brand-strong); }
.nav-create { border-color: var(--brand); background: var(--brand); color: var(--paper); }
.nav-create:hover { border-color: var(--brand-strong); background: var(--brand-strong); color: var(--paper); }
.lang-dropdown { position: relative; }
.lang-button { position: relative; padding-right: 34px; }
.lang-button::after { content: ""; position: absolute; right: 15px; top: 50%; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: translateY(calc(-50% - 0.28em)) rotate(45deg); }
.lang-menu { position: absolute; top: calc(100% + 10px); right: 0; z-index: 35; width: 174px; padding: var(--s1); background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-ui); box-shadow: var(--shadow-float); }
.lang-menu a { position: relative; display: block; padding: 8px 28px 8px 10px; border-radius: 9px; font-size: 14px; }
.lang-menu a:hover, .lang-menu a[aria-current] { background: var(--brand-soft); color: var(--brand-strong); }
.lang-menu a[aria-current]::after { content: ""; position: absolute; right: 12px; top: 11px; width: 8px; height: 4px; border-left: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(-45deg); }
.nav-toggle { display: none; width: 40px; height: 40px; padding: 0; place-content: center; gap: 4px; border: 1px solid var(--line); border-radius: 50%; background: var(--paper); }
.nav-toggle span { width: 16px; height: 1.5px; background: var(--ink); }
.mobile-nav-drawer { position: fixed; top: calc(var(--header-h) + 8px); left: 16px; right: 16px; z-index: 50; padding: var(--s2); background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-ui); box-shadow: var(--shadow-float); }
.mobile-nav-drawer a { display: block; padding: 11px 12px; }
.x-short { display: none; }

main { overflow: clip; }
.hero { padding: var(--s5) 0 var(--s4); }
.hero-card { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(350px, .82fr); gap: var(--s5); padding: clamp(32px, 5vw, 64px); overflow: hidden; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-card); }
.hero-card::before, .hero-card::after, .corner-grid::before, .corner-grid::after { content: ""; position: absolute; width: 13px; height: 13px; background: var(--line); clip-path: polygon(46% 0,54% 0,54% 46%,100% 46%,100% 54%,54% 54%,54% 100%,46% 100%,46% 54%,0 54%,0 46%,46% 46%); }
.hero-card::before { left: 14px; top: 14px; }.hero-card::after { right: 14px; bottom: 14px; }
.eyebrow { display: flex; width: max-content; min-width: 0; max-width: calc(100vw - 48px); margin: 0; padding: 6px 11px; border: 1px solid var(--line); border-radius: var(--radius-pill); background: var(--brand-soft); color: var(--brand-strong); font-size: var(--small); font-weight: 700; }
.eyebrow + h1, .eyebrow + h2 { margin-top: 20px; }
.hero h1 { max-width: 720px; margin-bottom: 0; font-family: "Avenir Next", "Segoe UI", "PingFang SC", sans-serif; font-size: clamp(44px, 5.2vw, var(--h1)); font-weight: 600; letter-spacing: 0; line-height: 1.13; text-wrap: balance; }
.hero-lead { max-width: 620px; margin: var(--s4) 0 0; color: var(--muted); font-size: 17px; }
.hero-actions { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: var(--s2); margin-top: var(--s5); }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 0 20px; border: 1px solid var(--line); border-radius: var(--radius-pill); background: var(--paper); color: var(--ink); font-weight: 650; }
.button:hover { background: var(--brand-soft); color: var(--brand-strong); }
.button-primary { border-color: var(--brand); background: var(--brand); color: var(--paper); }
.button-primary:hover { border-color: var(--brand-strong); background: var(--brand-strong); color: var(--paper); }
.hero-blueprint { align-self: stretch; display: grid; align-content: center; gap: var(--s3); min-width: 0; padding: var(--s4); background: var(--canvas); border: 1px solid var(--line); border-radius: var(--radius-ui); }
.blueprint-top { display: flex; align-items: center; justify-content: space-between; gap: var(--s2); }
.blueprint-profile { display: flex; align-items: center; gap: var(--s2); font-size: 14px; font-weight: 700; }
.profile-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; background: var(--brand); color: var(--paper); }
.blueprint-status { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: var(--small); }
.blueprint-status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.blueprint-field { height: 48px; display: flex; align-items: center; justify-content: space-between; gap: var(--s2); padding: 0 var(--s3); border: 1px solid var(--line); border-radius: 12px; background: var(--paper); font: 600 13px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.blueprint-calendar { display: grid; grid-template-columns: repeat(7,minmax(0,1fr)); gap: 5px; }
.blueprint-calendar span { aspect-ratio: 1; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); color: var(--muted); font-size: 11px; }
.blueprint-calendar span:nth-child(9), .blueprint-calendar span:nth-child(16) { background: var(--brand); color: var(--paper); border-color: var(--brand); }

.mailbox-section { padding: 0 0 var(--s7); scroll-margin-top: calc(var(--header-h) + 16px); }
.mailbox-shell { position: relative; padding: var(--s4); background: var(--ink); color: var(--paper); border-radius: var(--radius-card); transition: outline-color .25s; }
.mailbox-shell.is-highlighted { outline: 4px solid var(--accent); outline-offset: 4px; }
.mailbox-top { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--s3); align-items: center; }
.address-composer { min-width: 0; display: flex; align-items: center; min-height: 56px; overflow: hidden; border: 1px solid var(--night-line); border-radius: var(--radius-ui); background: var(--night); }
.address-composer:focus-within { border-color: var(--paper); }
.address-composer input { flex: 1; min-width: 0; width: 100%; height: 54px; padding: 0 var(--s3); border: 0; outline: 0; background: transparent; color: var(--paper); font: 600 16px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.address-composer input:focus { outline: none; }
.address-copy { align-self: stretch; min-width: 104px; border: 0; border-left: 1px solid var(--night-line); background: var(--night-hover); color: var(--paper); font-weight: 700; }
.address-copy:hover { background: var(--brand); color: var(--paper); }
.expiry { min-height: 56px; display: flex; align-items: center; gap: var(--s2); padding: 0 var(--s4); border: 1px solid var(--night-line); border-radius: var(--radius-ui); background: var(--night); }
.expiry span { color: var(--night-muted); font-size: var(--small); }
.expiry strong { font: 700 18px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.mailbox-tools { display: flex; flex-wrap: wrap; gap: var(--s2); margin-top: var(--s3); margin-bottom: var(--s4); }
.tool-button { min-height: 40px; display: inline-flex; align-items: center; gap: 8px; padding: 0 15px; border: 1px solid var(--night-line); border-radius: var(--radius-pill); background: var(--night); color: var(--paper); font-size: 14px; font-weight: 650; }
.tool-button:hover { border-color: var(--brand-soft); background: var(--brand); color: var(--paper); }
.inbox-workbench { height: 700px; min-height: 700px; display: grid; grid-template-columns: minmax(280px,.68fr) minmax(0,1.32fr); overflow: hidden; border: 1px solid var(--night-line); border-radius: var(--radius-ui); background: var(--night); }
.inbox-list-pane { min-width: 0; display: flex; flex-direction: column; border-right: 1px solid var(--night-line); }
.inbox-pane-head { height: 58px; display: flex; align-items: center; justify-content: space-between; gap: var(--s2); padding: 0 var(--s3); border-bottom: 1px solid var(--night-line); }
.inbox-pane-head h2 { margin: 0; color: var(--paper); font-size: 20px; line-height: 1.2; }
.count-pill, .status-pill, .demo-pill { display: flex; width: max-content; min-width: 0; max-width: calc(100vw - 48px); align-items: center; justify-content: center; border-radius: var(--radius-pill); }
.count-pill { min-width: 30px; height: 30px; background: var(--brand-soft); color: var(--brand-strong); font: 700 13px/1 ui-monospace, monospace; }
.message-list { min-height: 0; overflow-y: auto; }
.message-row { position: relative; width: 100%; min-width: 0; display: grid; grid-template-columns: 40px minmax(0,1fr) auto; gap: var(--s2); padding: var(--s3); border: 0; border-bottom: 1px solid var(--night-line); background: transparent; color: var(--paper); text-align: left; }
.message-row:hover { background: var(--night-hover); color: var(--paper); }
.message-row.is-selected { background: var(--brand); color: var(--paper); box-shadow: inset 3px 0 var(--accent); }
.message-avatar { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; background: var(--brand-soft); color: var(--brand-strong); }
.message-copy { min-width: 0; display: grid; gap: 2px; }
.message-sender { font-size: 13px; color: var(--night-muted); }
.message-subject { min-width: 0; overflow: hidden; color: var(--paper); font-size: 14px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.message-subject.is-unread::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 8px; border-radius: 50%; background: var(--accent); vertical-align: 1px; }
.message-preview { min-width: 0; overflow: hidden; color: var(--night-muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.message-meta { display: flex; flex-direction: column; align-items: flex-end; gap: var(--s1); color: var(--night-muted); font-size: 11px; }
.demo-pill { padding: 4px 7px; background: var(--accent-soft); color: var(--accent-ink); font-size: 10px; font-weight: 700; }
.reader-pane { min-width: 0; overflow: auto; background: var(--night-raised); }
.reader-inner { min-height: 100%; padding: 24px 26px; color: var(--paper); }
.reader-head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--s3); padding-bottom: var(--s4); border-bottom: 1px solid var(--night-line); }
.reader-head h3 { margin: var(--s2) 0 0; color: var(--paper); font-size: var(--h3); line-height: 1.35; }
.reader-head p { margin: var(--s1) 0 0; color: var(--night-muted); font-size: 13px; }
.status-pill { padding: 5px 9px; background: var(--brand-soft); color: var(--brand-strong); font-size: 11px; font-weight: 700; }
.reader-body { margin-top: var(--s4); color: var(--ink); }
.reader-note { margin: var(--s4) 0 0; padding: var(--s2) var(--s3); border: 1px solid var(--night-line); border-radius: 10px; color: var(--night-copy); font-size: 12px; }
.demo-mail { display: block; padding: var(--s4); border-radius: var(--radius-ui); background: var(--paper); color: var(--ink); }
.demo-mail-head { display: flex; align-items: center; gap: var(--s3); padding-bottom: var(--s3); border-bottom: 1px solid var(--line); }
.demo-brand-icon { width: 44px; height: 44px; display: grid; place-items: center; flex: none; border-radius: 12px; background: var(--brand-soft); color: var(--brand); }
.demo-mail-head strong { display: block; }.demo-mail-head small { display: block; margin-top: 2px; color: var(--muted); }
.demo-mail h4 { margin: var(--s4) 0 var(--s2); font-size: 20px; }
.demo-mail p { margin: var(--s2) 0; color: var(--ink-soft); }
.demo-code { margin: var(--s4) 0; padding: var(--s4); border-radius: 12px; background: var(--brand-soft); color: var(--brand-strong); font: 700 30px/1 ui-monospace, monospace; letter-spacing: .12em; text-align: center; }
.demo-facts, .demo-file { margin-top: var(--s3); padding: var(--s3); border: 1px solid var(--line); border-radius: 12px; background: var(--canvas); }
.demo-facts { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--s2); }
.demo-facts span { color: var(--muted); font-size: 12px; }.demo-facts strong { display: block; color: var(--ink); font-size: 13px; }
.demo-file { display: flex; align-items: center; gap: var(--s3); }.demo-file svg { flex: none; color: var(--brand); }
.demo-action { display: inline-block; width: max-content; margin-top: var(--s4); padding: 10px 16px; border-radius: var(--radius-pill); background: var(--brand); color: var(--paper); font-weight: 700; pointer-events: none; }
.mail-frame { width: 100%; min-height: 490px; border: 0; border-radius: 12px; background: var(--paper); }
.plain-mail { margin: 0; padding: var(--s4); white-space: pre-wrap; overflow-wrap: anywhere; border-radius: 12px; background: var(--paper); color: var(--ink); font: 14px/1.65 ui-monospace, monospace; }
.icon-button { width: 40px; height: 40px; display: grid; place-items: center; flex: none; padding: 0; border: 1px solid var(--night-line); border-radius: 50%; background: var(--night); color: var(--paper); font-size: 0; gap: 0; }

.content-section { padding: 0 0 var(--s7); }
.section-head { max-width: 760px; margin-bottom: var(--s5); }
.section-head h2 { margin: 0; font-family: "Avenir Next", "Segoe UI", "PingFang SC", sans-serif; font-size: clamp(30px, 3.5vw, var(--h2)); font-weight: 600; line-height: 1.2; letter-spacing: 0; text-wrap: balance; }
.section-head .section-intro { margin: 20px 0 0; color: var(--muted); }
.card-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: var(--s3); }
.info-card { position: relative; min-width: 0; padding: var(--s4); border: 1px solid var(--line); border-radius: var(--radius-ui); background: var(--paper); }
.info-card h3 { margin: var(--s3) 0 var(--s2); font-size: var(--h3); line-height: 1.35; }
.info-card p { margin: 0; color: var(--muted); }
.card-index { display: flex; width: max-content; min-width: 0; max-width: calc(100vw - 48px); color: var(--brand); font: 700 13px/1 ui-monospace, monospace; }
.corner-grid { position: relative; }
.corner-grid::before { top: -7px; left: -7px; }.corner-grid::after { right: -7px; bottom: -7px; }
.process-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-card); background: var(--line); }
.process-step { min-width: 0; padding: var(--s5); background: var(--paper); }
.process-step strong { display: block; margin-bottom: var(--s3); color: var(--brand); font: 700 13px/1 ui-monospace, monospace; }
.process-step h3 { margin: 0 0 var(--s2); font-size: var(--h3); }.process-step p { margin: 0; color: var(--muted); }
.rule-panel { display: grid; grid-template-columns: minmax(0,.8fr) minmax(0,1.2fr); gap: var(--s4); padding: var(--s5); border-radius: var(--radius-card); background: var(--brand); color: var(--paper); }
.rule-panel h2 { margin: 0; font-size: clamp(30px,3.5vw,var(--h2)); line-height: 1.2; }.rule-panel > div > p { color: var(--brand-soft); }
.rule-list { display: grid; gap: 1px; overflow: hidden; border: 1px solid var(--brand-line); border-radius: var(--radius-ui); background: var(--brand-line); }
.rule-row { display: grid; grid-template-columns: 120px minmax(0,1fr); gap: var(--s3); align-items: start; padding: var(--s3); background: var(--brand-strong); }
.rule-row strong { margin:0; color: var(--paper); }.rule-row span { color: var(--brand-soft); }
.scenario-strip { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: var(--s3); }
.scenario { min-width: 0; padding: var(--s4); border: 1px solid var(--line); border-radius: var(--radius-ui); background: var(--brand-soft); }
.scenario svg { width: 28px; height: 28px; color: var(--brand); }.scenario h3 { margin: var(--s3) 0 var(--s1); font-size: 19px; }.scenario p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.compare-table { width: 100%; border-collapse: separate; border-spacing: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-ui); background: var(--paper); }
.compare-table th, .compare-table td { padding: var(--s3); border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare-table th { background: var(--brand-soft); color: var(--brand-strong); font-size: 14px; }.compare-table td { color: var(--ink-soft); }.compare-table tr:last-child td { border-bottom: 0; }
.check-layout { display: grid; grid-template-columns: minmax(0,.75fr) minmax(0,1.25fr); gap: var(--s4); }
.check-summary { padding: var(--s5); border-radius: var(--radius-card); background: var(--accent-soft); }.check-summary h2 { margin: 0; font-size: clamp(30px,3.5vw,var(--h2)); line-height: 1.2; }.check-summary p { margin: 20px 0 0; color: var(--accent-copy); }
.check-list { margin: 0; padding: 0; list-style: none; border: 1px solid var(--line); border-radius: var(--radius-ui); background: var(--paper); }
.check-list li { display: grid; grid-template-columns: 32px minmax(0,1fr); gap: var(--s3); align-items: start; padding: var(--s3) var(--s4); }.check-list li + li { border-top: 1px solid var(--line); }
.check-list span { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--brand-soft); color: var(--brand); font: 700 12px/1 ui-monospace,monospace; }.check-list strong { display: block; margin:0; }.check-list p { margin: 3px 0 0; color: var(--muted); font-size: 14px; }
.faq-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--s3); align-items: start; }
.faq-grid details { min-width: 0; padding: var(--s3) var(--s4); border: 1px solid var(--line); border-radius: var(--radius-ui); background: var(--paper); }
.faq-grid summary { cursor: pointer; font-weight: 700; }.faq-grid p { margin: var(--s2) 0 0; color: var(--muted); }
.pre-footer { margin-bottom: var(--s6); padding: var(--s5); border-radius: var(--radius-card); background: var(--ink); color: var(--paper); }
.pre-footer-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--s4); }.pre-footer h2 { margin: 0; font-size: 28px; }.pre-footer p { margin: var(--s1) 0 0; color: var(--night-muted); }
.section-cta { flex: none; padding-top: var(--s4); }
.site-footer { padding: var(--s6) 0 var(--s4); background: var(--ink); color: var(--paper); }
.footer-layout { display: grid; grid-template-columns: minmax(240px,1.25fr) repeat(3,minmax(0,.75fr)); gap: var(--s4); }
.site-footer .brand-link { color: var(--paper); }.footer-about p { display:block; max-width:360px; margin:var(--s3) 0 0; color:var(--night-muted); font-size:14px; }
.footer-col strong { display: block; margin-bottom: var(--s3); font-size: 13px; }.footer-col a { display: block; width: max-content; max-width: 100%; margin-top: var(--s2); color: var(--night-muted); font-size: 14px; }.footer-col a:hover { color: var(--paper); }.footer-trust-links { display:flex; flex-direction:column; gap:var(--s2); }.footer-trust-links a { width:max-content; max-width:100%; color:var(--night-muted); font-size:14px; }.footer-trust-links a:hover { color:var(--paper); }
.footer-bottom { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--s4); margin-top: var(--s6); padding-top: var(--s4); border-top: 1px solid var(--night-line); }
.footer-languages { display: flex; flex-wrap: wrap; gap: var(--s2); }.footer-languages a { color: var(--night-muted); font-size: 13px; }.footer-languages a[aria-current], .footer-languages a:hover { color: var(--paper); }
.footer-bottom p { margin: 0; color: #9FABA5; font-size: 12px; }
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 80; width: max-content; max-width: min(430px,calc(100% - 32px)); padding: 11px 16px; border-radius: 16px; background: var(--ink); color: var(--paper); box-shadow: var(--shadow-float); opacity: 0; pointer-events: none; transform: translate(-50%,12px); transition: .2s ease; }
.toast.show { opacity: 1; transform: translate(-50%,0); }
.mobile-reader-sheet { position: fixed; inset: 0; z-index: 70; overflow-y: auto; background: var(--night-raised); }
.mobile-reader-close { position: fixed; top: 12px; right: 12px; z-index: 2; width: 42px; height: 42px; padding: 0; border: 1px solid var(--night-line); border-radius: 50%; background: var(--ink); color: var(--paper); font-size: 0; gap: 0; }
.mobile-reader-close::before, .mobile-reader-close::after { content: ""; position: absolute; left: 12px; top: 20px; width: 18px; height: 2px; background: currentColor; }.mobile-reader-close::before { transform: rotate(45deg); }.mobile-reader-close::after { transform: rotate(-45deg); }

/* Forwarding access uses a route-map login and three deliberately distinct task surfaces. */
input { min-height:48px; max-width:100%; padding:0 15px; border:1px solid var(--ink-soft); border-radius:var(--radius-ui); background:var(--paper); color:var(--ink); }
input:focus { outline:1px solid var(--ink); outline-offset:1px; }
.access-layout { display:grid; grid-template-columns:minmax(0,.9fr) minmax(360px,1.1fr); gap:var(--s4); padding:var(--s5) 0 var(--s7); }
.access-map { min-width:0; padding:var(--s5); border-radius:var(--radius-card); background:var(--brand); color:var(--paper); }
.access-map h1 { margin:20px 0 0; max-width:620px; font-size:clamp(38px,4.5vw,52px); line-height:1.12; }
.access-map p { color:var(--brand-soft); }
.access-map .eyebrow { background:var(--paper); color:var(--brand-strong); border-color:var(--brand-line); }
.route-figure { margin:var(--s5) 0 0; padding:var(--s4); border:1px solid var(--brand-line); border-radius:var(--radius-ui); background:var(--brand-strong); }
.access-panel { min-width:0; padding:var(--s5); border:1px solid var(--line); border-radius:var(--radius-card); background:var(--paper); }
.access-panel h2,.studio-identity h2,.archive-ledger h2,.security-strip h2 { margin:0; font-size:24px; line-height:1.25; }
.access-note { margin:var(--s4) 0; padding:var(--s3); border:1px solid var(--line); border-radius:12px; background:var(--canvas); color:var(--ink-soft); }
.access-note[data-tone="error"] { border-color:var(--danger); background:var(--danger-soft); color:var(--danger); }
.access-note[data-tone="success"] { border-color:var(--brand); background:var(--brand-soft); color:var(--brand-strong); }
.auth-phase { display:grid; gap:var(--s2); }.auth-phase .button { margin-top:var(--s2); }
.auth-phase label,.access-panel label { display:grid; gap:var(--s2); }
.auth-phase label input,.access-panel label input { width:100%; }
.auth-phase-actions { display:flex; flex-wrap:wrap; gap:var(--s2); margin-top:var(--s2); }
.studio-shell { padding:var(--s5) 0 var(--s7); }
.session-bar { display:flex; align-items:center; justify-content:space-between; gap:var(--s4); margin-bottom:var(--s4); padding:var(--s4); border-radius:var(--radius-ui); background:var(--ink); color:var(--paper); }
.session-bar p { margin:4px 0 0; color:var(--night-muted); }.session-bar .button { background:var(--night); color:var(--paper); border-color:var(--night-line); }
.studio-identity { padding:var(--s5); border:1px solid var(--line); border-radius:var(--radius-card); background:var(--paper); }
.identity-copy { margin:20px 0 0; color:var(--muted); }.identity-composer { display:flex; align-items:stretch; margin-top:20px; }
.identity-composer input { flex:1 1 auto; min-width:0; border-radius:var(--radius-ui) 0 0 var(--radius-ui); }.identity-suffix { display:flex; align-items:center; padding:0 14px; border:1px solid var(--line); border-left:0; border-radius:0 var(--radius-ui) var(--radius-ui) 0; background:var(--canvas); }
.form-actions { display:flex; flex-wrap:wrap; align-items:center; gap:var(--s2); margin-top:var(--s2); margin-bottom:var(--s5); }
.empty-state { margin-top:var(--s4); padding:var(--s4); border:1px dashed var(--line); border-radius:var(--radius-ui); background:var(--canvas); color:var(--muted); }
.table-scroll { overflow-x:auto; }.identity-table { width:100%; border-collapse:collapse; }.identity-table th,.identity-table td { padding:var(--s3); border-bottom:1px solid var(--line); text-align:left; vertical-align:middle; }.identity-table small { display:block; color:var(--muted); }.status-cell,.row-actions { white-space:nowrap; }.row-actions { display:flex; flex-wrap:nowrap; align-items:center; gap:var(--s1); }
.mini-control,.attachment-control { min-height:36px; padding:0 12px; border:1px solid var(--line); border-radius:var(--radius-pill); background:var(--paper); color:var(--ink); }.danger-control { color:var(--danger); }
.archive-ledger { margin-top:var(--s4); padding:var(--s5); border:1px solid var(--line); border-radius:var(--radius-ui); background:var(--brand-soft); }
.archive-toolbar { display:flex; align-items:center; justify-content:space-between; gap:var(--s3); margin-bottom:var(--s4); }.filter-wrap { position:relative; }.filter-trigger { position:relative; width:max-content; padding-right:42px; }.filter-trigger::after { content:""; position:absolute; right:16px; top:50%; width:7px; height:7px; border-right:1.5px solid currentColor; border-bottom:1.5px solid currentColor; transform:translateY(calc(-50% - 0.28em)) rotate(45deg); }
.status-menu { position:absolute; top:calc(100% + 8px); right:0; z-index:4; min-width:180px; padding:var(--s1); border:1px solid var(--line); border-radius:var(--radius-ui); background:var(--paper); box-shadow:var(--shadow-float); }.status-menu button { display:block; width:100%; padding:9px 10px; border:0; border-radius:9px; background:transparent; color:var(--ink); text-align:left; }.status-menu button:hover { background:var(--brand-soft); color:var(--brand-strong); }
.archive-rows { display:grid; gap:var(--s2); }.archive-row { width:100%; display:flex; justify-content:space-between; gap:var(--s3); padding:var(--s3); border:1px solid var(--line); border-radius:12px; background:var(--paper); color:var(--ink); text-align:left; }.archive-row small { display:block;color:var(--muted); }.archive-row-meta { display:flex; align-items:center; gap:var(--s2); white-space:nowrap; }
.archive-detail { min-width:0; max-width:100%; margin-top:var(--s5); padding:var(--s4); border:1px solid var(--line); border-radius:var(--radius-ui); background:var(--paper); overflow:hidden; }.archive-detail-head { display:flex; justify-content:space-between; gap:var(--s3); padding-bottom:var(--s3); border-bottom:1px solid var(--line); }.attachment-list { display:flex; flex-wrap:wrap; gap:var(--s2); margin-top:var(--s4); }.attachment-note { padding:var(--s3); border-radius:12px; background:var(--canvas); color:var(--muted); }
.security-strip { display:grid; grid-template-columns:minmax(0,1fr) auto; gap:var(--s4); align-items:center; margin-top:var(--s4); padding:var(--s4); border-radius:16px; background:var(--ink); color:var(--paper); }.security-strip p { margin:8px 0 0; color:var(--night-muted); }.security-strip .status-pill { margin-bottom:20px; background:var(--night-hover); color:var(--paper); }.twofa-setup,.twofa-disable { grid-column:1/-1; display:grid; gap:var(--s2); padding:var(--s4); border:1px solid var(--night-line); border-radius:14px; background:var(--night-raised); }.twofa-setup img { width:180px; height:180px; border-radius:12px; }.secret-row { display:flex; flex-wrap:nowrap; align-items:center; gap:var(--s2); }.secret-row code { display:flex; align-items:center; min-height:48px; padding:0 12px; border-radius:var(--radius-ui); background:var(--night); }.twofa-copy { margin-top:0; align-self:center; }.twofa-setup form,.twofa-disable form { display:grid; grid-template-columns:minmax(0,1fr) auto; gap:var(--s2); align-items:end; }.twofa-setup form label,.twofa-disable form label { display:grid; gap:8px; }.twofa-setup form input,.twofa-disable form input { width:100%; }.twofa-confirm { margin-top:0; }
.confirm-backdrop { position:fixed; inset:0; z-index:90; display:grid; place-items:center; padding:var(--s3); background:rgba(23,32,28,.56); }.confirm-card { width:min(430px,100%); padding:var(--s4); border-radius:var(--radius-ui); background:var(--paper); color:var(--ink); }.confirm-card h2 { margin:0; font-size:22px; }.confirm-actions { display:flex; justify-content:flex-end; gap:var(--s2); margin-top:var(--s4); }

/* Inner editorial, legal and route-console surfaces */
.page-hero { padding:var(--s5) 0 var(--s6); }
.page-hero-card { padding:clamp(28px,5vw,56px); border:1px solid var(--line); border-radius:var(--radius-card); background:var(--paper); }
.page-hero h1 { max-width:850px; margin:20px 0 0; font-size:clamp(38px,4.6vw,52px); line-height:1.14; font-weight:600; }
.page-hero .section-intro { max-width:760px; margin:20px 0 0; color:var(--muted); font-size:17px; }
.prose-wrap { padding-bottom:var(--s7); }
.prose-card { padding:clamp(24px,4vw,48px); border:1px solid var(--line); border-radius:var(--radius-card); background:var(--paper); }
.prose-card h2 { margin:48px 0 0; font-size:30px; }.prose-card h2:first-child { margin-top:0; }
.prose-card h3 { margin:24px 0 0; font-size:22px; }.prose-card p { margin:12px 0 0; color:var(--ink-soft); }.prose-card ul,.prose-card ol { color:var(--ink-soft); line-height:1.75; }
.overview-grid,.legal-glance { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:var(--s3); margin-bottom:var(--s5); }
.overview-card { min-width:0; padding:var(--s4); border:1px solid var(--line); border-radius:var(--radius-ui); background:var(--canvas); }.overview-card strong { display:block; }.overview-card p { margin:8px 0 0; }
.legal-table,.decision-table { width:100%; margin:24px 0 40px; border-collapse:collapse; }.legal-table th,.legal-table td,.decision-table th,.decision-table td { padding:14px; border:1px solid var(--line); text-align:left; vertical-align:top; }.legal-table th,.decision-table th { background:var(--brand-soft); }
.boundary-pair { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:var(--s3); margin:24px 0 40px; }.boundary-card { min-width:0; padding:var(--s4); border:1px solid var(--line); border-radius:var(--radius-ui); background:var(--canvas); }.boundary-card h3 { margin:0; }
.editorial-grid { display:grid; grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr); gap:var(--s4); align-items:start; }.signal-card { padding:var(--s4); border:1px solid var(--line); border-radius:var(--radius-ui); background:var(--paper); }.signal-card + .signal-card { margin-top:var(--s3); }.signal-card h2,.signal-card h3 { margin:0; }.signal-card p { margin:12px 0 0; color:var(--muted); }
.timeline { display:grid; gap:var(--s3); }.timeline article { display:grid; grid-template-columns:minmax(7.5em,max-content) minmax(0,1fr); gap:var(--s4); align-items:start; padding:var(--s4); border:1px solid var(--line); border-radius:var(--radius-ui); background:var(--paper); }.timeline article h2,.timeline article h3 { margin:0; font-size:22px; line-height:1.3; }.timeline article p { margin:8px 0 0; }.timeline strong { color:var(--brand); margin:0; padding-top:0; }
.console-nav { display:flex; gap:8px; overflow-x:auto; margin-bottom:var(--s4); padding:8px; border:1px solid var(--line); border-radius:var(--radius-pill); background:var(--paper); }.console-nav button { flex:1 1 0; min-width:0; min-height:40px; display:inline-flex; align-items:center; justify-content:center; padding:0 16px; border:0; border-radius:var(--radius-pill); background:transparent; color:var(--ink-soft); }.console-nav button[aria-current] { background:var(--ink); color:var(--paper); }
.console-pane { min-width:0; }.console-pane[hidden] { display:none!important; }.quota-line { display:flex; justify-content:space-between; gap:var(--s3); margin-top:var(--s3); color:var(--muted); }
.archive-ledger { border-radius:var(--radius-card); }.security-strip { border-radius:var(--radius-card); }.twofa-disable { margin-top:24px; }
.archive-empty-follow { margin-bottom:40px; }.archive-detail iframe { width:100%; min-width:0; max-width:100%; min-height:420px; border:0; overflow-wrap:anywhere; }
.console-recommend { position:fixed; right:20px; bottom:20px; z-index:45; width:min(340px,calc(100% - 40px)); padding:20px 48px 20px 20px; border:1px solid var(--line); border-radius:var(--radius-ui); background:var(--paper); box-shadow:var(--shadow-float); }.console-recommend a { color:var(--brand); font-weight:700; }.recommend-float-close { position:absolute; right:12px; top:12px; width:30px; height:30px; border:0; border-radius:50%; background:var(--canvas); font-size:0; }.recommend-float-close::before,.recommend-float-close::after { content:""; position:absolute; left:8px; top:14px; width:14px; height:1.5px; background:var(--ink); }.recommend-float-close::before{transform:rotate(45deg)}.recommend-float-close::after{transform:rotate(-45deg)}
@media (max-width: 980px) {
  .primary-nav { display: none; }
  .nav-actions { margin-left: auto; }
  .nav-toggle { display: grid; }
  .hero-card { grid-template-columns: minmax(0,1fr); }
  .hero-blueprint { grid-template-columns: minmax(0,1fr); }
  .scenario-strip { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .card-grid { grid-template-columns: minmax(0,1fr); }
  .footer-layout { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-about { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  .wrap { width: min(100% - 28px,var(--wrap)); }
  .header-inner { gap: var(--s1); }
  .brand-link span { display: inline; }
  .nav-actions > [data-auth-link] { display: none; }
  .x-full { display: none; }.x-short { display: inline; }
  .nav-action { padding-inline: 12px; }
  .hero { padding-top: var(--s3); }
  .hero-card { padding: var(--s4); gap: var(--s4); }
  .hero h1 { font-size: clamp(42px,12vw,52px); }
  .hero-actions { grid-template-columns: minmax(0,1fr); }
  .blueprint-calendar span:nth-child(n+15) { display: none; }
  .mailbox-shell { padding: var(--s2); border-radius: 18px; }
  .mailbox-top { grid-template-columns: minmax(0,1fr); }
  .address-composer { align-items: stretch; flex-direction: column; overflow: visible; }
  .address-composer input { height: 54px; font-size: 14px; text-overflow: clip; }
  .address-copy { min-height: 46px; border-left: 0; border-top: 1px solid var(--night-line); }
  .mailbox-tools { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); }
  .tool-button { justify-content: center; padding-inline: 8px; font-size: 12px; }
  .inbox-workbench { height: auto; min-height: 0; display: block; }
  .inbox-list-pane { min-height: 410px; border-right: 0; }
  .inbox-grid > .reader-pane { display: none; }
  .message-row { grid-template-columns: 40px minmax(0,1fr); }
  .message-meta { grid-column: 2; align-items: flex-start; flex-direction: row; }
  .content-section, .mailbox-section { padding-bottom: var(--s6); }
  .process-grid, .rule-panel, .check-layout, .faq-grid, .access-layout, .security-strip { grid-template-columns: minmax(0,1fr); }
  .access-map,.access-panel,.studio-identity,.archive-ledger { padding:var(--s4); }
  .archive-toolbar,.archive-row { align-items:flex-start; flex-direction:column; }
  .archive-row-meta { flex-wrap:wrap; }
  .identity-composer { flex-wrap:wrap; }.identity-composer input { border-radius:var(--radius-ui); }.identity-suffix { min-height:44px; border-left:1px solid var(--line); border-radius:var(--radius-ui); }
  .twofa-setup form,.twofa-disable form { grid-template-columns:minmax(0,1fr); }
  .secret-row { flex-wrap:wrap; }
  .session-bar { align-items:flex-start; flex-direction:column; }
  .scenario-strip { grid-template-columns: minmax(0,1fr); }
  .rule-panel, .check-summary { padding: var(--s4); }
  .rule-row { grid-template-columns: minmax(0,1fr); gap: 4px; }
  .compare-scroll { overflow-x: auto; touch-action: pan-x; }
  .compare-table { min-width: 680px; }
  .pre-footer-inner, .footer-bottom { align-items: flex-start; flex-direction: column; }
  .footer-layout { grid-template-columns: minmax(0,1fr); }.footer-about { grid-column: auto; }
  .footer-bottom { margin-top: var(--s5); }
}
@media (max-width: 430px) {
  .nav-create { display: none; }
  .mailbox-tools { grid-template-columns: minmax(0,1fr); }
  .lang-button { min-width: 82px; }
  .demo-facts { grid-template-columns: minmax(0,1fr); }
}