:root {
  --paper: #f6f4ee;
  --white: #fffefa;
  --ink: #20382f;
  --body: #46554c;
  --muted: #657168;
  --accent: #b4432c;
  --line: #d8dcd1;
  --soft: #e9ede3;
  --dark: #203c33;
  --on-dark: #f2f4eb;
  --on-dark-muted: #c4d2c4;
  --radius: 22px;
  --shell: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body { margin: 0; background: var(--paper); color: var(--body); font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 16px; line-height: 1.8; -webkit-font-smoothing: antialiased; }
::selection { background: #e8b39d; color: var(--ink); }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, h4 { color: var(--ink); font-weight: 650; line-height: 1.35; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
a, button, summary { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
a, button { transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
img { display: block; max-width: 100%; }
svg { display: block; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
button:disabled { cursor: wait; }
[hidden] { display: none !important; }
.shell { width: min(var(--shell), calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 20; top: 10px; left: 16px; transform: translateY(-150%); padding: 10px 20px; color: var(--white); background: var(--dark); border-radius: 6px; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; z-index: 10; top: 0; border-bottom: 1px solid var(--line); background: var(--paper); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 94px; }
.brand { display: flex; gap: 12px; align-items: center; flex: 0 1 auto; color: var(--ink); line-height: 1.4; }
.brand strong { display: block; font-size: 17px; font-weight: 700; letter-spacing: .03em; }
.brand-en { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; letter-spacing: .015em; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { padding-block: 12px; color: var(--body); font-size: 14px; white-space: nowrap; }
.main-nav a:hover, .back-top:hover { color: var(--accent); }
.button { display: inline-flex; min-height: 54px; align-items: center; justify-content: center; gap: 14px; padding: 12px 26px; border: 1px solid transparent; border-radius: 8px; font-size: 15px; font-weight: 600; line-height: 1.5; white-space: nowrap; }
.button-small { min-height: 44px; gap: 16px; padding: 10px 19px; border-color: var(--ink); color: var(--ink); font-size: 13px; }
.button-small:hover { background: var(--dark); color: var(--white); }
.button-primary { color: white; background: var(--accent); }
.button-primary:hover { background: #963721; box-shadow: 0 4px 16px #8f392a22; }
.button:active, .copy-button:active { box-shadow: inset 0 0 0 2px #ffffff50; }
.icon { width: 20px; height: 20px; flex-shrink: 0; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--accent); font-size: 13px; font-weight: 600; letter-spacing: .035em; }
.accent-square { display: inline-block; width: 7px; height: 7px; background: var(--accent); }
.hero-grid { display: grid; grid-template-columns: 1.06fr 1fr; align-items: center; gap: 68px; padding-top: 78px; padding-bottom: 76px; }
.hero-copy { padding-block: 12px; }
h1 { margin-top: 27px; font-size: clamp(38px, 4.05vw, 62px); font-weight: 700; letter-spacing: -.045em; line-height: 1.44; }
.accent-word { color: var(--accent); }
.hero-description { max-width: 32em; margin-top: 26px; font-size: 17px; line-height: 1.95; }
.hero-actions { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; margin-top: 32px; }
.text-link { display: inline-flex; align-items: center; gap: 13px; min-height: 44px; color: var(--ink); font-size: 14px; font-weight: 600; }
.text-link:hover { color: var(--accent); }
.hero-caption { max-width: 31em; margin-top: 21px; color: var(--muted); font-size: 12px; line-height: 1.85; }
.hero-principles { display: flex; gap: 17px; margin-top: 34px; font-size: 12px; color: var(--muted); }
.hero-principles span + span { padding-left: 17px; border-left: 1px solid var(--line); }
.workbench { position: relative; min-width: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: 0 18px 50px #203c3309, 8px 8px 0 -1px var(--paper), 8px 8px 0 0 var(--line); }
.workbench-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px 23px; border-bottom: 1px solid var(--line); font-size: 12px; color: var(--ink); }
.workbench-heading > span:first-child { display: flex; align-items: center; gap: 8px; }
.small-mark { width: 7px; height: 7px; background: var(--accent); }
.sample-badge { font-size: 10px; color: var(--muted); padding: 2px 7px; border: 1px solid var(--line); border-radius: 4px; white-space: nowrap; }
.work-question { margin: 25px 25px 0; padding: 19px 21px; border-radius: 10px; background: #f0f1ea; }
.label { display: block; font-size: 11px; color: var(--muted); }
.work-question > p { margin-top: 8px; color: var(--ink); font-size: 18px; font-weight: 600; line-height: 1.8; letter-spacing: -.015em; }
.fact-tags { display: flex; gap: 8px; margin-top: 13px; }
.fact-tags span { padding: 1px 7px; border: 1px solid #d4dace; border-radius: 4px; color: #58665b; font-size: 10px; }
.method-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: start; gap: 5px; margin: 26px 25px; }
.step-number { display: block; color: var(--accent); font-size: 11px; font-weight: 600; }
.method-flow strong { display: block; margin-top: 8px; color: var(--ink); font-size: 13px; font-weight: 600; white-space: nowrap; }
.method-flow p { margin-top: 5px; font-size: 10px; line-height: 1.7; }
.flow-arrow { padding-top: 27px; color: var(--accent); }
.daily-flow { padding: 18px 22px 21px; margin: 0 25px; background: var(--dark); color: var(--on-dark); border-radius: 9px; }
.daily-heading { display: flex; justify-content: space-between; gap: 8px; font-size: 12px; }
.subtle-light { color: var(--on-dark-muted); font-size: 10px; }
.daily-steps { display: flex; align-items: center; justify-content: space-between; margin-top: 21px; }
.daily-steps > span { display: flex; align-items: center; gap: 8px; font-size: 12px; white-space: nowrap; }
.daily-steps svg { width: 23px; height: 27px; stroke-width: 1.4; }
.daily-steps > b { color: #b6c5b7; font-weight: 400; font-size: 15px; }
.workbench-note { display: flex; align-items: flex-start; gap: 10px; padding: 21px 26px 23px; }
.note-line { display: block; flex-shrink: 0; width: 19px; height: 1px; background: var(--accent); margin-top: 10px; }
.workbench-note p { font-size: 11px; line-height: 1.8; color: var(--muted); }
.hero-bottom { display: flex; justify-content: space-between; gap: 20px; padding-block: 19px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; letter-spacing: .025em; }
.hero-bottom > span:first-child { letter-spacing: .11em; }
.hero-bottom > span:last-child > span { margin-left: 13px; }
.section { padding-block: 96px; }
.section-kicker { margin-bottom: 20px; font-size: 12px; }
h2 { font-size: clamp(29px, 2.8vw, 40px); letter-spacing: -.025em; line-height: 1.5; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 47px; }
.section-intro { padding-bottom: 5px; font-size: 15px; line-height: 1.9; color: var(--muted); }
.fit-section { border-bottom: 1px solid var(--line); }
.fit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px; }
.fit-item { border-top: 1px solid var(--line); padding-top: 23px; }
.item-index { display: block; font-size: 13px; color: var(--accent); font-weight: 600; }
.fit-item h3 { margin-top: 20px; font-size: 22px; }
.fit-item p { margin-top: 15px; max-width: 24em; font-size: 15px; line-height: 1.95; }
.scenario-label { display: block; margin-top: 24px; color: var(--muted); font-size: 12px; }
.fit-aside { margin-top: 42px; padding: 17px 21px; background: var(--soft); border-radius: 7px; font-size: 13px; line-height: 1.85; }
.fit-aside > span { color: var(--accent); margin-right: 8px; }
.method-section { background: #eeefe7; }
.method-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 105px; align-items: start; }
.method-copy > p:not(.eyebrow) { max-width: 29em; margin-top: 25px; font-size: 15px; line-height: 1.95; }
.method-copy .text-link { margin-top: 25px; }
.role-row { display: flex; align-items: center; gap: 21px; padding-block: 27px; border-top: 1px solid #cfd5c8; }
.role-row:last-child { border-bottom: 1px solid #cfd5c8; }
.role-icon { display: flex; flex-shrink: 0; width: 53px; height: 53px; align-items: center; justify-content: center; border: 1px solid #cad1c2; border-radius: 13px; color: var(--ink); }
.role-icon svg { width: 28px; height: 28px; stroke-width: 1.35; }
.role-label { font-size: 11px; color: var(--muted); }
.role-row h3 { font-size: 19px; margin-top: 3px; }
.role-row p { font-size: 13px; margin-top: 7px; line-height: 1.8; }
.role-number { margin-left: auto; align-self: flex-start; font-size: 11px; color: var(--muted); }
.example-section { padding-bottom: 100px; }
.case-tabs { display: flex; gap: 31px; margin-bottom: 27px; border-bottom: 1px solid var(--line); }
.case-tab { position: relative; min-height: 53px; padding: 8px 0 16px; border: 0; border-radius: 0; background: transparent; color: var(--muted); font-size: 15px; }
.case-tab::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: transparent; transition: background-color 180ms ease; }
.case-tab[aria-selected="true"] { color: var(--ink); font-weight: 600; }
.case-tab[aria-selected="true"]::after { background: var(--accent); }
.case-tab:hover { color: var(--accent); }
.case-panel { display: grid; grid-template-columns: .9fr 1.1fr; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--white); }
.case-context { padding: 38px 44px 40px; background: #e9ede3; }
.case-label { color: var(--accent); font-size: 12px; font-weight: 600; }
.case-context h3 { margin-top: 24px; font-size: 31px; line-height: 1.5; letter-spacing: -.025em; }
.case-context p { max-width: 26em; margin-top: 20px; font-size: 14px; line-height: 1.9; }
.case-tag { display: inline-block; margin-top: 27px; border: 1px solid #c5d0c2; border-radius: 5px; padding: 4px 11px; color: var(--ink); font-size: 12px; }
.case-solution { display: flex; flex-direction: column; padding: 40px 44px; }
.solution-eyebrow { color: var(--muted); font-size: 12px; }
.case-solution h4 { margin-top: 15px; font-size: 23px; }
.case-solution > p:not(.solution-eyebrow) { margin-top: 19px; font-size: 14px; line-height: 1.95; }
.case-check { display: flex; gap: 13px; margin-top: 25px; padding-top: 21px; border-top: 1px solid var(--line); }
.check-mark { color: var(--accent); font-size: 18px; line-height: 1.5; }
.case-check p { font-size: 13px; line-height: 1.9; }
.case-check strong { color: var(--ink); margin-right: 9px; font-weight: 600; }
.case-takeaway { margin-top: auto; padding-top: 25px; }
.case-takeaway > span { display: block; font-size: 11px; color: var(--muted); }
.case-takeaway strong { display: block; margin-top: 7px; font-size: 14px; color: var(--ink); font-weight: 600; }
.noscript-note { font-size: 13px; margin-top: 15px; }
.start-section { padding-top: 20px; padding-bottom: 104px; }
.start-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 92px; align-items: start; }
.start-steps { list-style: none; padding: 0; margin: 32px 0 0; }
.start-steps li { display: flex; gap: 22px; padding-block: 21px; border-top: 1px solid var(--line); }
.start-steps li > span { font-size: 19px; color: var(--accent); line-height: 1.4; font-weight: 400; }
.start-steps h3 { font-size: 18px; }
.start-steps p { margin-top: 10px; font-size: 14px; line-height: 1.9; }
.install-note { color: var(--muted); font-size: 12px; line-height: 1.85; padding-top: 6px; }
code { font-family: Consolas, "SFMono-Regular", monospace; font-size: .95em; overflow-wrap: anywhere; }
.prompt-card { margin-top: 0; padding: 27px 29px; color: var(--on-dark); border-radius: var(--radius); background: var(--dark); }
.prompt-heading { display: flex; align-items: center; justify-content: space-between; gap: 14px; font-size: 17px; font-weight: 600; line-height: 1.5; }
.prompt-dot { width: 7px; height: 7px; background: #d29374; border-radius: 50%; flex-shrink: 0; }
.prompt-subtitle { margin-top: 12px; font-size: 12px; color: var(--on-dark-muted); }
.prompt-text { margin-top: 24px; padding-top: 22px; border-top: 1px solid #4e6958; font-size: 14px; line-height: 2.2; }
.prompt-text:focus-visible { outline-color: #e7a58c; }
.prompt-bottom { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
.copy-button { display: inline-flex; align-items: center; gap: 9px; padding: 11px 16px; min-height: 44px; border: 1px solid #819580; border-radius: 7px; color: var(--on-dark); background: transparent; font-size: 12px; font-weight: 600; }
.copy-button:hover { background: #355244; border-color: #b4c3ad; }
.copy-button:focus-visible { outline-color: #edac91; }
.copy-button .icon { width: 16px; height: 16px; }
.copy-status { font-size: 11px; color: #dce4d6; line-height: 1.7; }
.download-section { color: var(--on-dark); background: var(--dark); padding-block: 71px; }
.download-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 84px; align-items: center; }
.download-copy .eyebrow { color: #e5a58b; font-size: 12px; }
.download-copy h2 { margin-top: 18px; color: var(--on-dark); font-size: 34px; }
.download-copy > p:last-child { margin-top: 21px; color: var(--on-dark-muted); font-size: 14px; line-height: 1.95; }
.download-options { min-width: 0; }
.download-card { display: flex; align-items: center; gap: 19px; min-height: 120px; padding: 22px; border: 1px solid #627e68; border-radius: 12px; }
.skill-download { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.skill-download:hover { background: #e3e9dc; border-color: #e3e9dc; }
.guide-download { margin-top: 13px; }
.guide-download:hover { background: #2e4d3e; border-color: #a2b59a; }
.download-file-icon { flex-shrink: 0; }
.download-file-icon svg { width: 32px; height: 36px; }
.download-card-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.download-card-body > strong { font-size: 17px; font-weight: 600; line-height: 1.5; }
.download-card-body > span { font-size: 11px; opacity: .9; }
.download-card-body > small { font-size: 10px; margin-top: 5px; opacity: .8; }
.download-card-body > small > span[aria-hidden="true"] { margin-inline: 6px; }
.download-arrow { margin-left: auto; align-self: flex-start; line-height: 1.3; font-size: 21px; }
.download-help { margin-top: 15px; color: var(--on-dark-muted); font-size: 11px; line-height: 1.9; }
.download-section :focus-visible { outline-color: #edac91; }
.faq-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 110px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 77px; padding-block: 22px; cursor: pointer; color: var(--ink); font-size: 16px; font-weight: 600; list-style: none; line-height: 1.7; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:hover { color: var(--accent); }
.faq-plus { position: relative; flex-shrink: 0; width: 15px; height: 15px; color: var(--accent); }
.faq-plus::before, .faq-plus::after { content: ""; position: absolute; inset: 7px 0 auto; width: 15px; height: 1px; background: currentColor; }
.faq-plus::after { transform: rotate(90deg); }
.faq-list details[open] .faq-plus::after { display: none; }
.faq-answer { padding-right: 37px; padding-bottom: 25px; font-size: 14px; line-height: 1.95; }
.site-footer { border-top: 1px solid var(--line); padding-block: 31px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.footer-brand { color: var(--ink); font-size: 13px; font-weight: 600; line-height: 1.5; }
.footer-brand > span { display: block; margin-top: 5px; font-size: 11px; font-weight: 400; color: var(--muted); }
.footer-inner > p { color: var(--muted); font-size: 12px; }
.back-top { display: inline-flex; gap: 13px; align-items: center; min-height: 44px; font-size: 12px; white-space: nowrap; }
@media (min-width: 1500px) { .hero-grid { padding-block: 90px; } }
@media (max-width: 1140px) {
  .shell { width: calc(100% - 64px); }
  .main-nav { gap: 19px; }
  .hero-grid { gap: 38px; padding-top: 60px; padding-bottom: 64px; }
  h1 { font-size: clamp(36px, 4.3vw, 52px); }
  .hero-description { font-size: 16px; }
  .hero-actions { gap: 19px; }
  .hero-principles { gap: 11px; font-size: 11px; }
  .hero-principles span + span { padding-left: 11px; }
  .workbench-heading { padding-inline: 19px; }
  .work-question { margin-inline: 18px; padding-inline: 17px; }
  .work-question > p { font-size: 16px; }
  .method-flow { margin-inline: 19px; }
  .method-flow strong { font-size: 12px; }
  .daily-flow { margin-inline: 18px; padding-inline: 16px; }
  .daily-steps > span { gap: 6px; font-size: 11px; }
  .daily-steps svg { width: 20px; }
  .method-grid { gap: 60px; }
  .start-grid { gap: 48px; }
  .download-inner { gap: 48px; }
  .download-copy h2 { font-size: 30px; }
  .faq-grid { gap: 65px; }
  .case-context, .case-solution { padding: 32px; }
}
@media (max-width: 900px) {
  .header-inner { gap: 20px; flex-wrap: wrap; padding-block: 17px 0; min-height: 0; }
  .brand { flex: 1; }
  .header-download { order: 1; }
  .main-nav { order: 2; width: 100%; gap: 32px; margin-top: -3px; }
  .main-nav a { padding-block: 9px 13px; font-size: 13px; }
  html { scroll-padding-top: 145px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; padding-top: 55px; padding-bottom: 60px; }
  .hero-copy { max-width: 640px; }
  h1 { font-size: 56px; }
  .hero-description { max-width: 34em; }
  .hero-caption { max-width: 42em; }
  .hero-principles { font-size: 12px; margin-top: 25px; }
  .workbench { max-width: 630px; width: 100%; justify-self: center; }
  .work-question > p { font-size: 20px; }
  .method-flow { gap: 15px; margin: 26px; }
  .method-flow strong { font-size: 15px; }
  .method-flow p { font-size: 12px; }
  .daily-steps > span { font-size: 14px; gap: 13px; }
  .daily-steps svg { width: 26px; height: 29px; }
  .workbench-note p { font-size: 12px; }
  .section { padding-block: 72px; }
  h2 { font-size: 34px; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 20px; margin-bottom: 33px; }
  .fit-grid { gap: 23px; }
  .fit-item h3 { font-size: 19px; }
  .fit-item p { font-size: 14px; }
  .scenario-label { font-size: 11px; }
  .method-grid { grid-template-columns: 1fr; gap: 30px; }
  .method-copy > p:not(.eyebrow) { max-width: 42em; }
  .role-row { padding-block: 22px; }
  .case-context, .case-solution { padding: 27px; }
  .case-context h3 { font-size: 26px; }
  .case-solution h4 { font-size: 20px; }
  .case-takeaway { padding-top: 22px; }
  .start-grid { grid-template-columns: 1fr; gap: 32px; }
  .start-steps { margin-top: 30px; }
  .prompt-card { max-width: 630px; width: 100%; justify-self: center; }
  .download-inner { grid-template-columns: 1fr; gap: 32px; }
  .download-copy h2 { font-size: 34px; }
  .download-options { max-width: 630px; width: 100%; }
  .faq-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-inner { flex-wrap: wrap; column-gap: 25px; row-gap: 17px; }
  .footer-inner > p { order: 2; width: 100%; }
}
@media (max-width: 600px) {
  .shell { width: calc(100% - 40px); }
  .header-inner { column-gap: 12px; row-gap: 12px; padding-top: 13px; }
  .brand { gap: 10px; }
  .brand img { width: 34px; height: 34px; }
  .brand strong { font-size: 15px; letter-spacing: 0; }
  .brand-en { font-size: 9.5px; margin-top: 3px; letter-spacing: 0; }
  .button-small { padding: 9px 12px; gap: 8px; font-size: 12px; }
  .main-nav { justify-content: space-between; gap: 8px; margin-top: 0; }
  .main-nav a { font-size: 12px; padding-block: 4px 11px; min-height: 44px; }
  html { scroll-padding-top: 136px; }
  .hero-grid { padding-top: 37px; padding-bottom: 43px; gap: 35px; }
  .hero-copy { padding-top: 0; padding-bottom: 0; }
  .eyebrow { font-size: 12px; gap: 8px; letter-spacing: .01em; }
  h1 { margin-top: 23px; font-size: clamp(33px, 9.4vw, 47px); letter-spacing: -.05em; line-height: 1.5; }
  .hero-description { margin-top: 19px; font-size: 16px; line-height: 1.95; }
  .hero-actions { margin-top: 25px; gap: 20px; }
  .button-primary { min-height: 51px; padding-inline: 22px; font-size: 14px; gap: 12px; }
  .hero-actions .text-link { font-size: 12px; gap: 8px; }
  .hero-caption { font-size: 11px; margin-top: 17px; }
  .hero-principles { gap: 9px; margin-top: 25px; font-size: 10px; }
  .hero-principles span + span { padding-left: 9px; }
  .workbench { border-radius: 16px; box-shadow: 5px 5px 0 -1px var(--paper), 5px 5px 0 0 var(--line); }
  .workbench-heading { padding: 16px; font-size: 11px; gap: 8px; }
  .sample-badge { font-size: 9px; }
  .work-question { margin: 18px 15px 0; padding: 15px; }
  .work-question > p { font-size: 16px; line-height: 1.85; }
  .desktop-break { display: none; }
  .method-flow { margin: 22px 16px; gap: 4px; }
  .method-flow strong { font-size: 12px; margin-top: 7px; }
  .method-flow p { font-size: 10px; margin-top: 6px; }
  .step-number { font-size: 10px; }
  .flow-arrow { font-size: 12px; padding-top: 25px; }
  .daily-flow { margin-inline: 15px; padding: 15px; }
  .daily-heading { font-size: 11px; }
  .subtle-light { font-size: 9px; }
  .daily-steps { margin-top: 19px; }
  .daily-steps > span { flex-direction: column; gap: 9px; font-size: 11px; }
  .daily-steps svg { width: 25px; height: 27px; }
  .daily-steps > b { align-self: flex-start; padding-top: 7px; }
  .workbench-note { padding: 18px 17px; gap: 8px; }
  .workbench-note p { font-size: 10px; }
  .hero-bottom { padding-block: 17px; font-size: 10px; }
  .hero-bottom > span:first-child { font-size: 8px; letter-spacing: .055em; }
  .hero-bottom > span:last-child > span { margin-left: 3px; }
  .hero-bottom { gap: 10px; }
  .section { padding-block: 58px; }
  .section-kicker { margin-bottom: 16px; font-size: 11px; }
  h2 { font-size: 29px; line-height: 1.5; }
  .section-intro { font-size: 14px; }
  .section-heading { gap: 17px; margin-bottom: 30px; }
  .fit-grid { grid-template-columns: 1fr; gap: 28px; }
  .fit-item { position: relative; padding: 22px 0 0 41px; }
  .item-index { position: absolute; top: 24px; left: 0; font-size: 12px; }
  .fit-item h3 { font-size: 20px; margin-top: 0; }
  .fit-item p { max-width: none; font-size: 15px; margin-top: 12px; }
  .scenario-label { margin-top: 15px; font-size: 11px; }
  .fit-aside { margin-top: 30px; font-size: 12px; padding: 16px; }
  .method-grid { gap: 28px; }
  .method-copy > p:not(.eyebrow) { font-size: 15px; margin-top: 19px; }
  .method-copy .text-link { margin-top: 19px; }
  .role-row { gap: 15px; }
  .role-icon { width: 43px; height: 43px; border-radius: 10px; }
  .role-icon svg { width: 25px; height: 25px; }
  .role-row h3 { font-size: 18px; }
  .role-row p { font-size: 12px; line-height: 1.9; }
  .role-number { font-size: 10px; }
  .case-tabs { justify-content: space-between; gap: 12px; margin-bottom: 22px; }
  .case-tab { font-size: 12px; min-height: 48px; padding-bottom: 13px; }
  .case-panel { grid-template-columns: 1fr; border-radius: 16px; }
  .case-context, .case-solution { padding: 25px; }
  .case-label { font-size: 11px; }
  .case-context h3 { font-size: 27px; margin-top: 18px; }
  .case-context p { margin-top: 17px; font-size: 15px; }
  .case-tag { margin-top: 21px; font-size: 11px; }
  .case-solution h4 { font-size: 21px; line-height: 1.55; }
  .case-solution > p:not(.solution-eyebrow) { font-size: 15px; margin-top: 16px; }
  .case-check { margin-top: 21px; }
  .case-check p { font-size: 13px; }
  .case-takeaway { padding-top: 23px; }
  .case-takeaway strong { font-size: 14px; }
  .start-section { padding-top: 6px; }
  .start-grid { gap: 28px; }
  .start-steps { margin-top: 27px; }
  .start-steps li { gap: 19px; padding-block: 22px; }
  .start-steps li > span { font-size: 19px; }
  .start-steps h3 { font-size: 18px; }
  .start-steps p { font-size: 15px; }
  .install-note { font-size: 11px; }
  .prompt-card { padding: 24px 22px; border-radius: 16px; }
  .prompt-heading { font-size: 16px; }
  .prompt-subtitle { font-size: 11px; }
  .prompt-text { font-size: 14px; line-height: 2.2; margin-top: 21px; padding-top: 19px; }
  .prompt-bottom { margin-top: 23px; }
  .download-section { padding-block: 51px; }
  .download-copy h2 { font-size: 28px; line-height: 1.6; }
  .download-copy > p:last-child { font-size: 14px; margin-top: 18px; }
  .download-inner { gap: 27px; }
  .download-card { padding: 19px 17px; gap: 13px; min-height: 119px; border-radius: 10px; }
  .download-file-icon svg { width: 27px; height: 31px; }
  .download-card-body > strong { font-size: 16px; }
  .download-card-body > span { font-size: 10px; }
  .download-card-body > small { font-size: 10px; }
  .download-arrow { font-size: 19px; }
  .download-help { font-size: 10px; }
  .faq-grid { gap: 26px; }
  .faq-list summary { min-height: 77px; gap: 16px; font-size: 15px; padding-block: 21px; }
  .faq-answer { padding-right: 25px; font-size: 14px; padding-bottom: 23px; }
  .footer-inner { gap: 17px; }
  .footer-brand { font-size: 11px; }
  .footer-brand > span { font-size: 10px; }
  .footer-inner > p { font-size: 11px; }
  .back-top { font-size: 11px; gap: 8px; }
  .site-footer { padding-top: 25px; padding-bottom: calc(25px + env(safe-area-inset-bottom)); }
}
@media (max-width: 359px) {
  .shell { width: calc(100% - 32px); }
  .brand { gap: 8px; }
  .brand img { width: 29px; height: 29px; }
  .brand strong { font-size: 14px; }
  .brand-en { font-size: 8.7px; }
  .button-small { padding-inline: 9px; font-size: 11px; }
  .hero-actions { gap: 12px; }
  .hero-actions .text-link { font-size: 11px; }
  .hero-principles { gap: 7px; font-size: 9px; }
  .hero-principles span + span { padding-left: 7px; }
  .workbench-heading { padding-inline: 13px; font-size: 10px; }
  .method-flow strong { font-size: 11px; }
  .download-card-body > span { font-size: 9px; }
  .download-arrow { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}
@media print {
  .site-header { position: static; }
  .case-panel[hidden] { display: grid !important; margin-top: 20px; }
  .case-tabs, .copy-button, .skip-link { display: none; }
  .section { padding-block: 32px; }
  .workbench, .case-panel, .prompt-card, .download-section { break-inside: avoid; }
}