.ai-daily-case {
  padding: var(--section-gap, 120px) var(--page-pad, clamp(28px,6vw,100px));
  background: #efebe3;
  color: var(--ink);
  overflow-anchor: none;
}
.daily-copy {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr);
  align-items: end;
  gap: clamp(36px, 8vw, 130px);
  margin-bottom: clamp(48px, 7vh, 82px);
}
.daily-copy > div > p { margin: 0 0 22px; color: var(--accent); font-size: 11px; font-weight: 600; letter-spacing: .14em; }
.daily-copy h2 { margin: 0; font: 500 clamp(40px, 4.8vw, 72px)/1.34 "Noto Serif SC", serif; }
.daily-copy > p { margin: 0; color: var(--muted); font: 500 15px/1.85 "Noto Serif SC", serif; }
.daily-product { border: 1px solid var(--line); background: #f8f5ef; box-shadow: 0 26px 70px rgba(52,43,33,.08); }
.daily-toolbar {
  min-height: 66px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--warm-ink, #292722);
  color: var(--warm-white, #f4efe8);
}
.daily-toolbar > div:first-child { display: flex; align-items: center; gap: 10px; }
.daily-toolbar > div:first-child > span { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.daily-toolbar b { font: 600 16px "Noto Serif SC", serif; }
.daily-toolbar small { color: #aaa49b; font-size: 9px; }
.daily-modes { display: flex; align-self: stretch; }
.daily-modes button { position: relative; padding: 0 18px; border: 0; background: transparent; color: #aaa49b; font-size: 11px; }
.daily-modes button:after { content: ""; position: absolute; left: 18px; right: 18px; bottom: 0; height: 2px; background: transparent; }
.daily-modes button:hover,.daily-modes button:focus-visible,.daily-modes button.is-active { color: #fff; }
.daily-modes button.is-active:after { background: var(--accent); }
.daily-view { min-height: 620px; animation: daily-enter .5s var(--ease); }
@keyframes daily-enter { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.daily-reading { max-height: 680px; overflow-y: auto; scrollbar-color: #b9b0a5 transparent; }
.daily-intro { min-height: 70px; padding: 0 30px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.daily-intro p { margin: 0; font: 600 20px "Noto Serif SC", serif; }
.daily-intro span { color: var(--muted); font-size: 10px; }
.daily-item { display: grid; grid-template-columns: 72px 1fr; padding: 34px 30px; border-bottom: 1px solid var(--line); }
.daily-rank { color: var(--accent); font: 500 24px var(--serif); }
.daily-item-copy > p:first-child { display: flex; align-items: center; gap: 12px; margin: 0 0 12px; color: var(--muted); font-size: 10px; }
.daily-item-copy > p:first-child span { color: var(--accent); font-weight: 600; }
.daily-item-copy h3 { max-width: 900px; margin: 0; font: 600 clamp(20px, 2vw, 29px)/1.5 "Noto Serif SC", serif; }
.daily-item-copy > p:not(:first-child) { max-width: 850px; margin: 12px 0 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.daily-links { display: flex; gap: 24px; margin-top: 20px; }
.daily-source-note { color: var(--muted); font-size: 11px; line-height: 1.7; }
.daily-links a,.daily-links button { padding: 7px 0; border: 0; border-bottom: 1px solid transparent; background: transparent; color: var(--muted); font-size: 11px; }
.daily-links a:hover,.daily-links a:focus-visible,.daily-links button:hover,.daily-links button:focus-visible { border-color: var(--accent); color: var(--accent); }
.daily-reason { margin-top: 15px; padding: 16px 18px; border-left: 2px solid var(--accent); background: #efebe3; }
.daily-reason b { font: 600 13px "Noto Serif SC", serif; }
.daily-reason p { margin: 6px 0 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
.daily-trace { padding: clamp(30px, 5vw, 66px); }
.trace-source { display: grid; grid-template-columns: 140px minmax(0, 1fr) minmax(220px, .55fr); gap: 28px; align-items: start; padding-bottom: 36px; border-bottom: 1px solid var(--line); }
.trace-source span { color: var(--accent); font-size: 11px; font-weight: 600; }
.trace-source h3 { margin: 0; font: 600 clamp(23px, 2.6vw, 36px)/1.45 "Noto Serif SC", serif; }
.trace-source p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.daily-pipeline { margin: 0; padding: 42px 0; display: grid; grid-template-columns: repeat(6, 1fr); list-style: none; border-bottom: 1px solid var(--line); }
.daily-pipeline li { position: relative; min-height: 190px; padding: 0 18px; border-left: 1px solid var(--line); }
.daily-pipeline li:first-child { border-left: 0; padding-left: 0; }
.daily-pipeline b { display: block; margin-bottom: 40px; color: var(--accent); font-size: 11px; }
.daily-pipeline span { font: 600 16px "Noto Serif SC", serif; }
.daily-pipeline p { margin: 12px 0 0; color: var(--muted); font-size: 10px; line-height: 1.7; }
.trace-result { margin-top: 32px; display: flex; gap: 18px; align-items: flex-start; }
.trace-result > span { width: 30px; height: 30px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: #fff; }
.trace-result b { font: 600 17px "Noto Serif SC", serif; }
.trace-result p { margin: 7px 0 0; color: var(--muted); font-size: 11px; }
@media (max-width: 900px) { .daily-copy { grid-template-columns: 1fr; } .daily-pipeline { grid-template-columns: repeat(3, 1fr); row-gap: 32px; } .trace-source { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .ai-daily-case { padding: 78px 20px; } .daily-copy h2 { font-size: 37px; } .daily-toolbar { min-height: 112px; padding: 16px; align-items: flex-start; flex-direction: column; } .daily-modes { width: 100%; min-height: 44px; border-top: 1px solid rgba(255,255,255,.12); } .daily-modes button { flex: 1; padding: 0 8px; } .daily-intro { padding: 18px; align-items: flex-start; flex-direction: column; } .daily-item { grid-template-columns: 42px 1fr; padding: 26px 18px; } .daily-links { flex-wrap: wrap; } .daily-trace { padding: 28px 18px; } .daily-pipeline { grid-template-columns: 1fr 1fr; } .daily-pipeline li { min-height: 155px; } }
@media (prefers-reduced-motion: reduce) { .daily-view { animation: none; } }

/* One-viewport case layout: copy stays concise, the working product gets the space. */
@media (min-width: 901px) {
  .ai-daily-case {
    height: 100svh;
    min-height: 700px;
    padding: clamp(66px, 7.5vh, 88px) var(--page-pad) clamp(20px, 3vh, 32px);
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    overflow: hidden;
  }
  .daily-copy {
    grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr);
    gap: clamp(32px, 6vw, 94px);
    margin-bottom: clamp(14px, 2vh, 22px);
  }
  .daily-copy > div > p { margin-bottom: 10px; }
  .daily-copy h2 { font-size: clamp(34px, 3.45vw, 52px); line-height: 1.3; }
  .daily-copy > p { font-size: 12px; line-height: 1.7; }
  .daily-product { min-height: 0; display: grid; grid-template-rows: 58px minmax(0, 1fr); }
  .daily-toolbar { min-height: 58px; }
  .daily-modes { align-self: center; height: 38px; padding: 3px; gap: 4px; border: 1px solid rgba(255,255,255,.18); }
  .daily-modes button { min-width: 112px; padding: 0 14px; border: 1px solid transparent; color: #d0cac1; }
  .daily-modes button:after { display: none; }
  .daily-modes button:hover,.daily-modes button:focus-visible { border-color: rgba(238,90,42,.72); color: #fff; }
  .daily-modes button.is-active { border-color: var(--accent); background: var(--accent); color: #fff; }
  .daily-view { min-height: 0; height: 100%; }
  .daily-reading { max-height: none; }
  .daily-intro { min-height: 54px; padding: 0 24px; }
  .daily-intro p { font-size: 17px; }
  .daily-item { grid-template-columns: 54px 1fr; padding: 19px 24px; }
  .daily-rank { font-size: 20px; }
  .daily-item-copy > p:first-child { margin-bottom: 6px; }
  .daily-item-copy h3 { font-size: clamp(17px, 1.55vw, 23px); line-height: 1.42; }
  .daily-item-copy > p:not(:first-child) { margin-top: 6px; font-size: 10px; line-height: 1.65; }
  .daily-links { margin-top: 9px; }
  .daily-links a,.daily-links button { padding: 5px 0; color: #504c45; font-weight: 600; }
  .daily-links button { color: var(--accent); }
  .daily-reason { margin-top: 8px; padding: 10px 14px; }
  .daily-trace { padding: clamp(20px, 3vw, 38px); overflow: hidden; }
  .trace-source { grid-template-columns: 110px minmax(0, 1.15fr) minmax(220px, .55fr); padding-bottom: 20px; }
  .trace-source h3 { font-size: clamp(21px, 2.1vw, 30px); }
  .trace-source p { font-size: 10px; }
  .daily-pipeline { padding: 24px 0; }
  .daily-pipeline li { min-height: 120px; padding: 0 14px; }
  .daily-pipeline b { margin-bottom: 24px; }
  .daily-pipeline span { font-size: 14px; }
  .daily-pipeline p { margin-top: 8px; font-size: 9px; }
  .trace-result { margin-top: 20px; }
}

@media (min-width: 901px) and (max-height: 780px) {
  .ai-daily-case { padding-top: 58px; padding-bottom: 16px; }
  .daily-copy { margin-bottom: 12px; }
  .daily-copy h2 { font-size: clamp(30px, 3vw, 43px); }
  .daily-copy > p { font-size: 10px; }
  .daily-product { grid-template-rows: 52px minmax(0, 1fr); }
  .daily-toolbar { min-height: 52px; }
  .daily-item { padding-block: 13px; }
  .daily-item-copy > p:not(:first-child) { display: none; }
  .daily-links { margin-top: 5px; }
  .trace-source { padding-bottom: 14px; }
  .daily-pipeline { padding: 17px 0; }
  .daily-pipeline li { min-height: 92px; }
  .daily-pipeline b { margin-bottom: 14px; }
  .trace-result { margin-top: 12px; }
}

@media (max-width: 600px) {
  .ai-daily-case { height: 100svh; min-height: 700px; padding: 58px 20px 16px; display: grid; grid-template-rows: auto minmax(0,1fr); overflow: hidden; }
  .daily-copy { gap: 10px; margin-bottom: 12px; }
  .daily-copy > div > p { margin-bottom: 8px; }
  .daily-copy h2 { font-size: 30px; line-height: 1.3; }
  .daily-copy > p { font-size: 10px; line-height: 1.55; }
  .daily-product { min-height: 0; display: grid; grid-template-rows: 98px minmax(0,1fr); }
  .daily-toolbar { min-height: 98px; padding: 12px 14px; gap: 8px; }
  .daily-modes { min-height: 38px; }
  .daily-modes button { border: 1px solid rgba(255,255,255,.16); }
  .daily-modes button.is-active { border-color: var(--accent); background: var(--accent); color: #fff; }
  .daily-modes button:after { display: none; }
  .daily-view { min-height: 0; height: 100%; overflow: auto; }
  .daily-reading { max-height: none; }
  .daily-intro { padding: 12px 14px; gap: 6px; }
  .daily-item { padding: 18px 14px; }
  .daily-item-copy h3 { font-size: 18px; }
  .daily-item-copy > p:not(:first-child) { font-size: 10px; }
  .daily-trace { padding: 20px 14px; }
}

@media (max-width: 600px) {
  .ai-daily-case { height: auto; min-height: auto; overflow: visible; grid-template-rows: auto; padding-bottom: 72px; }
  .daily-product { grid-template-rows: auto; }
  .daily-view { height: auto; overflow: visible; }
  .daily-modes { min-height: 44px; }
  .daily-modes button,[data-daily-reason] { min-height: 44px; }
  .daily-source-note { font-size: 11px; line-height: 1.7; }
}