/* Source: 品牌/tokens/fedge.tokens.json v1.1.0 */
:root {
  --c-zhusha: #be3a34;
  --c-yinni: #96261f;
  --c-ciwhite: #f6f7f5;
  --c-paper: #ffffff;
  --c-xuantie: #0a1626;
  --c-rongjin: #c9a265;
  --c-renguang: #eddcb4;
  --t-title: #16233a;
  --t-body: #272b32;
  --t-caption: #43464d;
  --t-dark-title: #e9eef5;
  --t-dark-body: #c2ccdb;
  --t-dark-caption: #92a2b8;
  --l-hair: #e3e7e4;
  --l-hair-strong: #d3d9d4;
  --l-zhuline: #e8c8c4;
  --l-zhuwash: #f7e9e7;
  --l-dark-hair: #1e3a5f;
  --ff-serif: "Source Han Serif SC", "Songti SC", "STSong", serif;
  --ff-sans: "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --ff-mono: "IBM Plex Mono", "SF Mono", Menlo, Consolas, monospace;
  --fs-h1: 3.25rem;
  --fs-h2: 2.125rem;
  --fs-h3: 1.125rem;
  --fs-body-lg: 1rem;
  --fs-body: .96875rem;
  --fs-small: .84375rem;
  --fs-caption: .78125rem;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --lh-heading: 1.25;
  --lh-body: 1.68;
  --measure: 42em;
  --container: 75rem;
  --header-height: 4rem;
}


@font-face {
  font-family: "IBM Plex Mono";
  src: url("/assets/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("/assets/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  min-width: 20rem;
  background: var(--c-ciwhite);
  color: var(--t-body);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  margin: 0;
  min-width: 20rem;
  background: var(--c-ciwhite);
  color: var(--t-body);
  font-family: var(--ff-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  line-height: var(--lh-body);
  text-rendering: optimizeLegibility;
}

body[data-scroll-locked="true"] { overflow: hidden; }

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-underline-offset: .2em; }

button, a { -webkit-tap-highlight-color: transparent; }

button, input, textarea, select { font: inherit; letter-spacing: 0; }

button { cursor: pointer; }

:focus-visible {
  outline: .125rem solid var(--c-rongjin);
  outline-offset: .1875rem;
}

h1, h2, h3, p { overflow-wrap: anywhere; }

h1, h2, h3 {
  margin: 0;
  color: var(--t-title);
  font-family: var(--ff-serif);
  font-weight: var(--fw-bold);
  letter-spacing: 0;
  line-height: var(--lh-heading);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p { margin: 0; }

.container {
  width: min(calc(100% - 8rem), var(--container));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: .0625rem;
  height: .0625rem;
  padding: 0;
  margin: -.0625rem;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 1000;
  padding: .625rem .875rem;
  color: var(--c-xuantie);
  background: var(--c-renguang);
  font-weight: var(--fw-semibold);
  transform: translateY(-200%);
}

.skip-link:focus { transform: translateY(0); }

.eyebrow {
  margin-bottom: .75rem;
  color: var(--c-zhusha);
  font-family: var(--ff-mono);
  font-size: var(--fs-caption);
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
}

.lead {
  max-width: var(--measure);
  margin-top: 1.5rem;
  color: var(--t-body);
  font-size: var(--fs-body-lg);
  line-height: 1.8;
}

.section,
.page-intro { padding-block: 5.5rem; }

.section--paper { background: var(--c-paper); }

.section h2,
.page-intro > .container > h1 { position: relative; }

.section h2::after,
.page-intro > .container > h1::after {
  content: "";
  display: block;
  width: 3rem;
  height: .125rem;
  margin-top: 1rem;
  background: var(--c-zhusha);
}

.section-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2.25rem;
}

.section-grid--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.section-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.text-link {
  display: inline-flex;
  margin-top: 1.5rem;
  color: var(--c-yinni);
  font-weight: var(--fw-semibold);
  text-decoration-thickness: .0625rem;
}

.button {
  display: inline-flex;
  min-height: 2.875rem;
  align-items: center;
  justify-content: center;
  border: .0625rem solid transparent;
  border-radius: .25rem;
  padding: .6875rem 1.125rem;
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.button--primary { color: #fff; background: var(--c-zhusha); }
.button--primary:hover { background: var(--c-yinni); }
.button--secondary { color: var(--t-body); border-color: var(--l-hair-strong); background: var(--c-paper); }
.button--secondary:hover { border-color: var(--t-caption); }


.preview-banner {
  min-height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: .35rem 1rem;
  color: var(--c-xuantie);
  background: var(--c-renguang);
  font-size: .75rem;
  font-weight: var(--fw-semibold);
  text-align: center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  color: var(--t-dark-body);
  background: rgba(10, 22, 38, .97);
  border-bottom: .0625rem solid var(--l-dark-hair);
  backdrop-filter: blur(.5rem);
}

.site-header__inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 2rem;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  margin-right: auto;
  color: var(--t-dark-title);
  font-family: var(--ff-mono);
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: 0;
  text-decoration: none;
}

.brand-lockup img,
.footer-brand img { flex: 0 0 auto; }

.site-nav { display: flex; align-items: stretch; align-self: stretch; gap: 1.5rem; }

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: var(--t-dark-body);
  font-size: .84375rem;
  text-decoration: none;
  transition: color 180ms ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: .125rem;
  background: transparent;
}

.site-nav__link:hover { color: var(--t-dark-title); }
.site-nav__link[aria-current="page"] { color: var(--c-renguang); }
.site-nav__link[aria-current="page"]::after { background: var(--c-rongjin); }

.menu-button {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  align-items: center;
  justify-content: center;
  border: .0625rem solid var(--l-dark-hair);
  border-radius: .25rem;
  color: var(--t-dark-title);
  background: transparent;
}

.menu-button__icon { width: 1.125rem; display: grid; gap: .25rem; }
.menu-button__icon i { display: block; height: .0625rem; background: currentColor; transition: transform 180ms ease, opacity 180ms ease; }

.hero {
  min-height: 38.75rem;
  display: flex;
  align-items: center;
  color: var(--t-dark-body);
  background-color: var(--c-xuantie);
  background-image: url("/assets/images/hero-brand.webp");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.hero__content { padding-block: 5rem 7rem; }
.hero__identity { color: var(--c-renguang); font-family: var(--ff-serif); font-weight: var(--fw-semibold); }
.hero h1 { max-width: 12em; margin-top: 1.5rem; color: var(--t-dark-title); }
.hero__english { max-width: 44rem; margin-top: 1.25rem; color: var(--c-rongjin); font-family: var(--ff-mono); font-size: .75rem; }

.feature-card {
  min-width: 0;
  padding: 1.5rem;
  background: var(--c-ciwhite);
  border: .0625rem solid var(--l-hair);
  border-top: .125rem solid var(--c-zhusha);
}

.feature-card--plain { border-top-color: var(--l-hair); }
.feature-card > span { display: block; margin-bottom: .625rem; color: var(--c-yinni); font-family: var(--ff-mono); font-size: .6875rem; }
.feature-card h2, .feature-card h3 { font-size: 1rem; }
.feature-card h2::after { display: none; }
.feature-card p { margin-top: .625rem; color: var(--t-caption); font-size: var(--fs-small); line-height: 1.75; }

.research-flow {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
}

.research-flow li {
  position: relative;
  min-width: 0;
  padding: 0 1rem 1.25rem 1.25rem;
  border-left: .0625rem solid var(--l-hair-strong);
}

.research-flow li::before {
  content: "";
  position: absolute;
  top: .4rem;
  left: -.3125rem;
  width: .5625rem;
  height: .5625rem;
  background: var(--c-zhusha);
}

.research-flow strong { display: block; color: var(--t-title); font-family: var(--ff-serif); font-size: .9375rem; }
.research-flow span { display: block; margin-top: .5rem; color: var(--t-caption); font-size: .78125rem; }

.information-note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 1.5rem;
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  color: var(--c-yinni);
  background: var(--l-zhuwash);
  border: .0625rem solid var(--l-zhuline);
}

.information-note p { max-width: var(--measure); font-size: var(--fs-small); }

.timeline {
  min-height: 25rem;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  align-items: end;
  gap: 1rem;
  margin: 3rem 0 0;
  padding: 0 0 1rem;
  border-bottom: .0625rem solid var(--l-hair-strong);
  list-style: none;
}

.timeline li { position: relative; min-width: 0; padding: 1rem 0 1rem 1rem; border-left: .125rem solid var(--l-zhuline); }
.timeline li:nth-child(1) { min-height: 9rem; }
.timeline li:nth-child(2) { min-height: 11rem; }
.timeline li:nth-child(3) { min-height: 13rem; }
.timeline li:nth-child(4) { min-height: 15rem; }
.timeline li:nth-child(5) { min-height: 17rem; }
.timeline li:nth-child(6) { min-height: 19rem; }
.timeline li:nth-child(7) { min-height: 21rem; }
.timeline li::before { content: ""; position: absolute; top: 0; left: -.3125rem; width: .5rem; height: .5rem; border-radius: 50%; background: var(--c-zhusha); }
.timeline time { color: var(--t-title); font-family: var(--ff-mono); font-size: 1.5rem; font-weight: 500; }
.timeline h2 { margin-top: .625rem; color: var(--c-yinni); font-size: .8125rem; }
.timeline h2::after { display: none; }
.timeline p { margin-top: .375rem; color: var(--t-caption); font-size: .75rem; line-height: 1.6; }

.phase-band { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 3rem; background: var(--c-paper); border: .0625rem solid var(--l-hair); }
.phase-band article { min-width: 0; padding: 1.5rem; border-right: .0625rem solid var(--l-hair); }
.phase-band article:last-child { border-right: 0; }
.phase-band h2 { font-size: 1rem; }
.phase-band h2::after { display: none; }
.phase-band span { display: block; margin-top: .375rem; color: var(--c-yinni); font-family: var(--ff-mono); font-size: .75rem; }
.phase-band p { margin-top: .625rem; color: var(--t-caption); font-size: .78125rem; }

.disclosure-list { margin: 2rem 0 0; border-top: .125rem solid var(--c-zhusha); }
.disclosure-list > div { display: grid; grid-template-columns: 13rem minmax(0, 1fr); border-bottom: .0625rem solid var(--l-zhuline); background: var(--c-paper); }
.disclosure-list dt, .disclosure-list dd { margin: 0; padding: .875rem 1rem; }
.disclosure-list dt { color: var(--t-title); font-weight: var(--fw-semibold); }
.disclosure-list dd { color: var(--t-body); }
.disclosure-list a { color: var(--c-yinni); font-weight: var(--fw-semibold); }
.external-link-unavailable { color: var(--t-caption); }

.risk-panel { margin-top: 1.5rem; padding: 1.5rem; border: .0625rem solid var(--l-hair); background: var(--c-paper); scroll-margin-top: 6rem; }
.risk-panel h2 { font-size: 1rem; }
.risk-panel h2::after { display: none; }
.risk-panel p { max-width: var(--measure); margin-top: .625rem; color: var(--t-caption); font-size: .8125rem; }

.section-note { max-width: var(--measure); margin-top: 1.5rem; color: var(--t-caption); font-size: var(--fs-caption); }

.page-intro--contact { padding-bottom: 4.5rem; }
.contact-direct { color: var(--t-dark-body); background: var(--c-xuantie); }
.contact-direct .eyebrow { color: var(--c-rongjin); }
.contact-direct h2 { color: var(--t-dark-title); }
.contact-direct h2::after { background: var(--c-renguang); }
.contact-channels { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 2.25rem 0 0; border-top: .0625rem solid var(--l-dark-hair); border-bottom: .0625rem solid var(--l-dark-hair); font-style: normal; }
.contact-channel { min-width: 0; padding: 1.75rem 2rem 1.75rem 0; }
.contact-channel + .contact-channel { padding-right: 0; padding-left: 2rem; border-left: .0625rem solid var(--l-dark-hair); }
.contact-channel__label { display: block; color: var(--c-renguang); font-family: var(--ff-mono); font-size: var(--fs-caption); }
.contact-channel__value { display: inline-block; max-width: 100%; margin-top: .625rem; color: var(--t-dark-title); font-family: var(--ff-mono); font-size: 1.375rem; font-weight: var(--fw-medium); overflow-wrap: anywhere; text-decoration-color: var(--c-rongjin); }
.contact-channel p { margin-top: .5rem; color: var(--t-dark-caption); font-size: var(--fs-small); }
.contact-topics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 2.25rem; border-top: .0625rem solid var(--l-hair-strong); border-bottom: .0625rem solid var(--l-hair-strong); }
.contact-topic { min-width: 0; padding: 1.75rem 2rem 1.75rem 0; }
.contact-topic + .contact-topic { padding-right: 0; padding-left: 2rem; border-left: .0625rem solid var(--l-hair-strong); }
.contact-topic__index { display: block; margin-bottom: .75rem; color: var(--c-yinni); font-family: var(--ff-mono); font-size: var(--fs-caption); }
.contact-topic h3 { font-size: 1.125rem; }
.contact-topic p { max-width: var(--measure); margin-top: .75rem; color: var(--t-caption); font-size: var(--fs-small); }

.site-footer { padding-block: 3.5rem 2.5rem; color: var(--t-dark-body); background: var(--c-xuantie); }
.site-footer__top { display: flex; justify-content: space-between; gap: 3rem; padding-bottom: 2rem; border-bottom: .0625rem solid var(--l-dark-hair); }
.footer-brand { display: flex; align-items: center; gap: .75rem; }
.footer-brand strong, .footer-brand span { display: block; }
.footer-brand strong { color: var(--t-dark-title); font-family: var(--ff-mono); font-size: .8125rem; }
.footer-brand span { margin-top: .125rem; font-size: .75rem; }
.footer-links { display: flex; gap: 3.5rem; }
.footer-links strong, .footer-links a { display: block; }
.footer-links strong { margin-bottom: .5rem; color: var(--t-dark-title); font-size: .8125rem; }
.footer-links a { margin-top: .25rem; color: var(--t-dark-body); font-size: .78125rem; text-decoration: none; }
.footer-links a:hover { color: var(--t-dark-title); }
.site-footer__risk { max-width: 80rem; margin-top: 1.5rem; color: var(--t-dark-caption); font-size: .75rem; }
.site-footer__legal { display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; margin-top: .875rem; color: var(--t-dark-caption); font-family: var(--ff-mono); font-size: .6875rem; }
.site-footer__legal a { color: inherit; }

.gate { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 1.25rem; background: rgba(10, 22, 38, .76); }
.gate[hidden] { display: none; }
.gate__dialog { width: min(100%, 38.75rem); max-height: min(84vh, 46rem); overflow: auto; padding: 2.25rem 2.5rem; background: var(--c-paper); box-shadow: 0 .5rem 2.5rem rgba(10, 22, 38, .2); }
.gate__dialog h2 { font-size: 1.375rem; }
.gate__dialog p:not(.eyebrow) { margin-top: .875rem; color: var(--t-caption); font-size: .8125rem; }
.gate__actions { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin-top: 1.5rem; }
.gate__noscript { padding: .75rem; border: .0625rem solid var(--l-zhuline); background: var(--l-zhuwash); }

.page-intro--error { min-height: 55vh; }
.page-intro--error .button { margin-top: 1.5rem; }


@media (max-width: 63.99rem) {
  .container { width: min(calc(100% - 4rem), var(--container)); }
  .section-grid--four,
  .section-grid--three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .research-flow { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem 0; }
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); min-height: 0; align-items: stretch; border-bottom: 0; }
  .timeline li:nth-child(n) { min-height: 0; }
}

@media (max-width: 59.99rem) {
  :root { --fs-h1: 2.5rem; --fs-h2: 1.875rem; }
  .site-header__inner { position: relative; }
  .menu-button { display: inline-flex; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    height: auto;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: .5rem 2rem 1rem;
    background: var(--c-xuantie);
    border-top: .0625rem solid var(--l-dark-hair);
    border-bottom: .0625rem solid var(--l-dark-hair);
  }
  .site-nav[data-open="true"] { display: flex; }
  .site-nav__link { min-height: 3rem; border-bottom: .0625rem solid var(--l-dark-hair); }
  .site-nav__link::after { display: none; }
  .hero { min-height: 34rem; background-position: 58% center; }
}

@media (max-width: 47.99rem) {
  :root { --fs-h1: 2.125rem; --fs-h2: 1.625rem; --header-height: 3.75rem; }
  .container { width: calc(100% - 2.5rem); }
  .section,
  .page-intro { padding-block: 4rem; }
  .hero { min-height: 31.25rem; background-position: 64% center; }
  .hero__content { padding-block: 4rem 6rem; }
  .hero__identity { max-width: 20rem; font-size: .8125rem; }
  .hero h1 { max-width: 9em; margin-top: 1.25rem; }
  .hero__english { max-width: 22rem; font-size: .6875rem; }
  .section-grid--four,
  .section-grid--three { grid-template-columns: 1fr; }
  .research-flow { grid-template-columns: 1fr; }
  .information-note { grid-template-columns: 1fr; gap: .5rem; }
  .timeline { grid-template-columns: 1fr; gap: 0; }
  .timeline li { padding: 0 0 2rem 1.25rem; }
  .timeline li::after { content: ""; position: absolute; top: .5rem; bottom: 0; left: -.0625rem; width: .0625rem; background: var(--l-zhuline); }
  .phase-band { grid-template-columns: 1fr; }
  .phase-band article { border-right: 0; border-bottom: .0625rem solid var(--l-hair); }
  .phase-band article:last-child { border-bottom: 0; }
  .disclosure-list > div { grid-template-columns: 1fr; }
  .disclosure-list dt { padding-bottom: .25rem; color: var(--c-yinni); }
  .disclosure-list dd { padding-top: .25rem; }
  .contact-channels,
  .contact-topics { grid-template-columns: 1fr; }
  .contact-channel,
  .contact-channel + .contact-channel,
  .contact-topic,
  .contact-topic + .contact-topic { padding: 1.5rem 0; border-left: 0; }
  .contact-channel + .contact-channel { border-top: .0625rem solid var(--l-dark-hair); }
  .contact-topic + .contact-topic { border-top: .0625rem solid var(--l-hair-strong); }
  .contact-channel__value { font-size: 1.125rem; }
  .site-footer__top { flex-direction: column; }
  .footer-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem; }
  .gate { align-items: flex-end; padding: 0; }
  .gate__dialog { width: 100%; max-height: 90vh; padding: 1.75rem 1.25rem calc(1.75rem + env(safe-area-inset-bottom)); }
  .gate__actions { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}