@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/plus-jakarta-sans-latin-ext-600-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/plus-jakarta-sans-latin-ext-700-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("fonts/plus-jakarta-sans-latin-ext-800-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/plus-jakarta-sans-latin-600-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/plus-jakarta-sans-latin-700-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("fonts/plus-jakarta-sans-latin-800-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/source-sans-3-latin-ext-400-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/source-sans-3-latin-ext-600-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/source-sans-3-latin-ext-700-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/source-sans-3-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/source-sans-3-latin-600-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/source-sans-3-latin-700-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --ink: #101828;
  --muted: #3d4d63;
  --link: #0c5670;
  --line: #d7e0ec;
  --paper: #f3f6fb;
  --white: #ffffff;
  --navy: #07111f;
  --navy-2: #102033;
  --cyan: #22d3ee;
  --cyan-deep: #0c5670;
  --focus: #0c5670;
  --shadow: 0 18px 50px rgba(16, 24, 40, 0.06);
  --header: 4.5rem;
  --wrap: 1120px;
  --sans: "Source Sans 3", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Malgun Gothic", "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
  --display: "Plus Jakarta Sans", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Malgun Gothic", "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
  color-scheme: light;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
}

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

h1, h2, h3, h4 {
  font-family: var(--display);
  line-height: 1.18;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin: 0 0 0.6rem;
  overflow-wrap: break-word;
}

:lang(zh) :is(h1, h2, h3, h4),
:lang(ja) :is(h1, h2, h3, h4),
:lang(ko) :is(h1, h2, h3, h4) {
  letter-spacing: 0;
  line-height: 1.35;
}

h1 { font-size: clamp(2.15rem, 3.6vw, 3.55rem); }
h2 { font-size: clamp(1.6rem, 2.4vw, 2.2rem); }
h3 { font-size: 1.22rem; letter-spacing: -0.02em; }

p { margin: 0 0 0.9rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--link); }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

::selection { background: #c8f6fb; color: var(--navy); }

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 80;
  background: #fff;
  color: var(--navy);
  padding: 0.6rem 0.9rem;
  border-radius: 8px;
  font-weight: 700;
}
.skip:focus { top: 0.7rem; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.wrap {
  width: min(var(--wrap), calc(100% - 2.5rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: var(--header);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--navy);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.05rem;
}
.wordmark:hover { text-decoration: none; }
.site-footer .wordmark { color: #fff; }

.nav {
  display: none;
  margin-left: auto;
}

.nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
}
.nav a[aria-current="page"] {
  color: var(--link);
  background: #e7f5f8;
}
.nav a:hover { background: #eef3f8; text-decoration: none; }

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-left: auto;
}

.lang { position: relative; }
.lang summary {
  list-style: none;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  font-weight: 700;
  font-family: var(--display);
  letter-spacing: 0.04em;
}
.lang summary::-webkit-details-marker { display: none; }
.lang summary::after {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-right: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  transform: translateY(-2px) rotate(45deg);
}
.lang ul {
  position: absolute;
  right: 0;
  top: calc(100% + 0.4rem);
  margin: 0;
  padding: 0.35rem;
  list-style: none;
  min-width: 12.5rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  z-index: 50;
}
.lang a {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0.7rem;
  border-radius: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
}
.lang a[aria-current="page"] { background: #e7f5f8; color: var(--link); }
.lang a:hover { background: #f3f6fb; text-decoration: none; }
.lang small { color: var(--muted); font-weight: 700; letter-spacing: 0.04em; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 48px;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  border: 1.5px solid transparent;
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  line-height: 1.2;
  cursor: pointer;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: #15263c; }
.btn-cyan { background: var(--cyan); color: var(--navy); }
.btn-cyan:hover { background: #67e8f5; }
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }
.btn-line {
  background: #fff;
  color: var(--navy);
  border-color: #c5d0de;
}
.btn-line:hover { border-color: var(--navy); }
.header-cta { min-height: 44px; padding-inline: 0.95rem; }
.menu-cta { display: none; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
}
.burger,
.burger::before,
.burger::after {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--navy);
  position: relative;
  border-radius: 2px;
}
.burger::before,
.burger::after {
  content: "";
  position: absolute;
  left: 0;
}
.burger::before { top: -5px; }
.burger::after { top: 5px; }

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 420px at 90% 0%, rgba(34, 211, 238, 0.18), transparent 60%),
    radial-gradient(700px 380px at 0% 90%, rgba(37, 99, 235, 0.18), transparent 55%),
    var(--navy);
  color: #d5deea;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.55), transparent 78%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: 3rem;
  align-items: center;
  padding: 4.25rem 0 4.5rem;
}
.hero h1 { color: #fff; max-width: 12em; }
.hero .lead { color: #d5deea; font-size: 1.2rem; max-width: 38rem; }
.hero :focus-visible { outline-color: var(--cyan); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 0.9rem;
  color: var(--cyan-deep);
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
:lang(zh) .eyebrow,
:lang(ja) .eyebrow,
:lang(ko) .eyebrow {
  letter-spacing: 0.04em;
  text-transform: none;
  font-size: 0.92rem;
}
.eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 2px;
  background: currentColor;
}
.hero .eyebrow { color: #9eebf6; }

.actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin: 1.4rem 0 1.1rem; }

.point-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.point-list li {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(158, 235, 246, 0.28);
  color: #e7f2fb;
  font-size: 0.95rem;
}

.hero-art { position: relative; }
.display {
  background: linear-gradient(180deg, #17304c 0%, #0d1b2e 100%);
  border: 1px solid rgba(158, 235, 246, 0.35);
  border-radius: 22px;
  padding: 0.85rem;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.display-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #d7f7fb;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.4rem 0.75rem;
}
:lang(zh) .display-bar,
:lang(ja) .display-bar,
:lang(ko) .display-bar { text-transform: none; letter-spacing: 0; font-size: 0.92rem; }
.display-bar strong { margin-left: auto; color: #fff; font-weight: 700; letter-spacing: 0; text-transform: none; }
.pulse {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: #fb7185;
  box-shadow: 0 0 0 4px rgba(251, 113, 133, 0.2);
}
.display-stage {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 0.8rem;
  align-items: center;
  background: rgba(5, 12, 22, 0.35);
  border-radius: 16px;
  padding: 0.9rem;
}
.wheel {
  width: min(100%, 210px);
  aspect-ratio: 1;
  margin-inline: auto;
  border-radius: 50%;
  background: conic-gradient(#16324d 0 22%, #128094 0 46%, #16324d 0 70%, #e77870 0 84%, #1a8ea3 0 100%);
  box-shadow: inset 0 0 0 12px #07111f, 0 0 0 8px rgba(34, 211, 238, 0.2);
  position: relative;
}
.wheel::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -6px;
  transform: translateX(-50%);
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 12px solid #9eebf6;
}
.wheel::after {
  content: "";
  position: absolute;
  inset: 36%;
  border-radius: 50%;
  background: #07111f;
  border: 3px solid #22d3ee;
}
.entry-col { color: #d5deea; }
.entry-col p {
  margin: 0 0 0.4rem;
  font-family: var(--display);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9eebf6;
}
:lang(zh) .entry-col p,
:lang(ja) .entry-col p,
:lang(ko) .entry-col p { text-transform: none; letter-spacing: 0; font-size: 0.9rem; }
.entry-col ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.35rem; }
.entry-col li {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.entry-col li.is-hot { background: rgba(34, 211, 238, 0.16); color: #fff; }
.join-chip {
  margin-top: 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: #fff;
  font-weight: 700;
}
.qr {
  width: 36px;
  height: 36px;
  border-radius: 4px;
  background:
    linear-gradient(#07111f, #07111f) 4px 4px / 8px 8px no-repeat,
    linear-gradient(#07111f, #07111f) 24px 4px / 8px 8px no-repeat,
    linear-gradient(#07111f, #07111f) 4px 24px / 8px 8px no-repeat,
    repeating-linear-gradient(90deg, #d7f7fb 0 3px, transparent 3px 6px),
    repeating-linear-gradient(#d7f7fb 0 3px, transparent 3px 6px);
  background-color: #9eebf6;
}
.operator {
  margin-top: 0.8rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0.95rem;
  border-radius: 14px;
  background: #fff;
  color: var(--ink);
  box-shadow: var(--shadow);
}
.operator span { display: block; color: var(--muted); font-size: 0.86rem; }
.operator strong { font-family: var(--display); }

.format-rail {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #050c16;
}
.format-rail a {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 0.9rem 1.1rem;
  color: #d5deea;
  text-decoration: none;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  min-height: 88px;
  font-weight: 700;
}
.format-rail a:last-child { border-right: 0; }
.format-rail a:hover { background: rgba(34, 211, 238, 0.08); color: #fff; text-decoration: none; }
.format-rail span {
  color: #9eebf6;
  font-family: var(--display);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.section { padding: 4.5rem 0; }
.section-head { max-width: 40rem; margin-bottom: 1.8rem; }
.section-head .lead, .lead { color: var(--muted); font-size: 1.12rem; }
.page-hero { padding: 2.6rem 0 1rem; }
.page-hero .lead { max-width: 42rem; }

.crumbs { margin: 0 0 1rem; }
.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.crumbs li:not(:last-child)::after { content: "/"; margin-left: 0.35rem; color: #8aa0b8; }
.crumbs a { color: var(--muted); }

.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.audience-grid, .industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.use-grid, .principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card, .audience, .industry, .principle, .tier, .panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.25rem 1.3rem 1.35rem;
  box-shadow: var(--shadow);
}
.card h3, .audience h2, .industry h3, .principle h3 { margin-bottom: 0.4rem; }
.icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: #e7f5f8;
  color: var(--link);
  margin-bottom: 0.8rem;
}
.icon svg { width: 22px; height: 22px; }

.band {
  background:
    radial-gradient(500px 180px at 100% 0%, rgba(34, 211, 238, 0.16), transparent 60%),
    var(--navy);
  color: #d5deea;
}
.band-inner {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: end;
  padding: 3.2rem 0;
}
.band h2 { color: #fff; max-width: 16em; }
.band .lead { color: #d5deea; }
.band :focus-visible { outline-color: var(--cyan); }

.timeline { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.timeline li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 0 0 1.3rem;
  position: relative;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: 1.15rem;
  top: 2.4rem;
  bottom: 0;
  width: 1px;
  background: var(--line);
}
.timeline li:last-child::before { display: none; }
.step-index {
  width: 2.4rem;
  height: 2.4rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.82rem;
}

.feature-list { display: grid; gap: 1rem; }
.feature-block {
  display: grid;
  grid-template-columns: auto 1.4fr 0.8fr;
  gap: 1.25rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 1.3rem;
  box-shadow: var(--shadow);
}
.feature-block h2 { font-size: 1.7rem; }
.feature-no {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.4rem;
  color: #9eb0c4;
  letter-spacing: -0.04em;
}
.fit {
  background: #f4fbfc;
  border-radius: 14px;
  padding: 1rem;
  align-self: stretch;
}
.fit p:first-child {
  margin-bottom: 0.35rem;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--link);
}
:lang(zh) .fit p:first-child,
:lang(ja) .fit p:first-child,
:lang(ko) .fit p:first-child { text-transform: none; letter-spacing: 0; font-size: 0.95rem; }

.checklist { list-style: none; margin: 0.8rem 0 0; padding: 0; display: grid; gap: 0.45rem; }
.checklist li {
  position: relative;
  padding-left: 1.4rem;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 2px;
  background: var(--cyan-deep);
}

.anatomy {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.anatomy li { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 1.15rem 1.2rem; }
.anatomy strong {
  display: block;
  font-family: var(--display);
  margin-bottom: 0.35rem;
}

.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; align-items: stretch; }
.tier { display: flex; flex-direction: column; }
.tier-featured {
  background: var(--navy);
  color: #d5deea;
  border-color: var(--navy);
}
.tier-featured h2, .tier-featured .price { color: #fff; }
.tier .badge {
  align-self: flex-start;
  margin: 0 0 0.7rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: #e7f5f8;
  color: var(--link);
  font-size: 0.85rem;
  font-weight: 700;
}
.tier-featured .badge { background: rgba(34, 211, 238, 0.16); color: #d8fbff; }
.price {
  font-family: var(--display);
  font-size: 2.4rem;
  letter-spacing: -0.04em;
  margin: 0.2rem 0;
}
.unit { color: var(--muted); margin-bottom: 0.8rem; }
.tier-featured .unit { color: #b7c5d8; }
.tier .checklist { margin-bottom: 1.2rem; }
.tier-featured .checklist li::before { background: var(--cyan); }
.tier .btn { margin-top: auto; width: 100%; }

.note {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 12px;
  background: #fff7ed;
  color: #7c2d12;
  border: 1px solid #fed7aa;
}

.faq { display: grid; gap: 0.6rem; }
.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.85rem 1rem;
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  font-family: var(--display);
  letter-spacing: -0.02em;
}
:lang(zh) .faq summary,
:lang(ja) .faq summary,
:lang(ko) .faq summary { letter-spacing: 0; }
.faq details p { margin-top: 0.6rem; color: var(--muted); }

.prose { max-width: 44rem; }
.prose p + p { margin-top: 0.2rem; }

.contact-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 1rem; align-items: start; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.85rem 0.9rem; }
.full { grid-column: 1 / -1; }
label, legend { font-weight: 700; display: block; margin-bottom: 0.35rem; }
.hint { color: var(--muted); font-weight: 400; font-size: 0.92rem; }
input, select, textarea {
  width: 100%;
  border: 1px solid #c9d4e3;
  background: #fff;
  color: var(--ink);
  border-radius: 12px;
  padding: 0.75rem 0.8rem;
  min-height: 48px;
  font: inherit;
}
textarea { min-height: 140px; resize: vertical; }
.checks { display: grid; gap: 0.45rem; border: 0; margin: 0; padding: 0; }
.checks label { display: flex; gap: 0.55rem; align-items: flex-start; font-weight: 600; margin: 0; }
.checks input { width: 1.1rem; height: 1.1rem; min-height: 0; margin-top: 0.2rem; }
.hp {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}
.form-status {
  margin-top: 0.8rem;
  padding: 0.75rem 0.85rem;
  border-radius: 12px;
  background: #e7f5f8;
}
.aside-list { margin: 0; padding-left: 1.1rem; display: grid; gap: 0.55rem; }

.related { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.5rem; }

.site-footer {
  background: var(--navy);
  color: #d5deea;
  padding: 3rem 0 1.5rem;
}
.site-footer a { color: #d5deea; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.site-footer :focus-visible { outline-color: var(--cyan); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 1.5rem 1rem; }
.footer-title {
  margin: 0 0 0.7rem;
  color: #fff;
  font-family: var(--display);
  font-weight: 700;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.4rem; }
.footer-brand p { max-width: 22rem; }
.footer-langs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.9rem;
  margin-top: 1.8rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
  margin-top: 1rem;
  color: #b7c5d8;
  font-size: 0.95rem;
}

.notfound { padding: 4rem 0 5rem; }
.notfound-list { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 0.6rem; }
.notfound-list a { font-weight: 700; }

[id] { scroll-margin-top: calc(var(--header) + 0.6rem); }

@media (max-width: 1080px) {
  .nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    margin: 0;
    padding: 0.6rem 1rem 1rem;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 0.75rem 0.7rem; }
  .menu-cta { display: inline-flex; margin-top: 0.4rem; }
  .header-cta { display: none; }
  .format-rail { grid-template-columns: repeat(3, 1fr); }
  .format-rail a:nth-child(3) { border-right: 0; }
  .feature-block { grid-template-columns: auto 1fr; }
  .fit { grid-column: 1 / -1; }
}

@media (min-width: 1081px) {
  .nav { display: flex; align-items: center; }
  .nav-toggle { display: none; }
  .header-tools { margin-left: 0; }
}

@media (max-width: 960px) {
  .hero-grid, .contact-grid, .band-inner, .price-grid, .anatomy, .use-grid, .audience-grid, .industry-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: 2rem; padding-top: 3rem; }
  .band-inner { align-items: start; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .wrap { width: min(var(--wrap), calc(100% - 2rem)); }
  .card-grid, .audience-grid, .industry-grid, .principle-grid, .form-grid { grid-template-columns: 1fr; }
  .format-rail { grid-template-columns: 1fr 1fr; }
  .format-rail a { border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
  .footer-grid { grid-template-columns: 1fr; }
  .display-stage { grid-template-columns: 1fr; }
  .section { padding: 3.2rem 0; }
}

@media (max-width: 380px) {
  .wordmark span { font-size: 0.95rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}