:root {
  --ink: #17130f;
  --ink-soft: #3a3128;
  --paper: #f5f1e8;
  --paper-deep: #e7dcc7;
  --ash: #8b8174;
  --chili: #e83b16;
  --oil: #ff8a00;
  --pickle: #4f8a35;
  --acid: #d8cc27;
  --line: rgba(23, 19, 15, 0.16);
  --shadow: 0 24px 70px rgba(28, 17, 7, 0.18);
  --radius: 8px;
  --display: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--body);
  background:
    linear-gradient(90deg, rgba(23, 19, 15, 0.055) 1px, transparent 1px) 0 0 / 36px 36px,
    radial-gradient(circle at 12% 8%, rgba(232, 59, 22, 0.14), transparent 28%),
    radial-gradient(circle at 88% 16%, rgba(216, 204, 39, 0.16), transparent 26%),
    var(--paper);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(110deg, transparent 0 45%, rgba(255, 138, 0, 0.08) 45% 46%, transparent 46% 100%),
    linear-gradient(160deg, transparent 0 72%, rgba(79, 138, 53, 0.08) 72% 73%, transparent 73% 100%);
  z-index: -2;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.34;
  background-image:
    radial-gradient(rgba(23, 19, 15, 0.2) 0.8px, transparent 0.8px),
    radial-gradient(rgba(255, 255, 255, 0.45) 0.7px, transparent 0.7px);
  background-position: 0 0, 12px 16px;
  background-size: 24px 24px, 28px 28px;
  mix-blend-mode: multiply;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 54px);
  background: rgba(245, 241, 232, 0.86);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brandmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: 0;
}

.brandmark span {
  writing-mode: vertical-rl;
  font-size: 13px;
  line-height: 1;
}

.brandmark strong {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  color: var(--paper);
  background: var(--ink);
  border-radius: 50%;
  font-family: Georgia, var(--display);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.nav a {
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 14px;
  transition: 180ms ease;
}

.nav a:hover,
.nav a.is-active {
  color: var(--paper);
  background: var(--ink);
}

.section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 80px 0;
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  align-items: center;
  gap: clamp(26px, 5vw, 70px);
  padding-top: 44px;
}

.eyebrow,
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  color: var(--chili);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before,
.kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: currentColor;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--display);
  line-height: 0.98;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(44px, 7vw, 96px);
  font-weight: 950;
}

h2 {
  max-width: 840px;
  font-size: clamp(36px, 5.4vw, 76px);
  font-weight: 930;
}

h3 {
  font-size: clamp(25px, 3vw, 42px);
}

.hero__lead {
  max-width: 660px;
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: clamp(16px, 1.55vw, 20px);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--ink);
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 8px 8px 0 var(--ink);
}

.button--dark {
  color: var(--paper);
  background: var(--ink);
}

.button--light {
  background: rgba(245, 241, 232, 0.7);
}

.hero__visual {
  position: relative;
  margin: 0;
  padding: 16px;
  background: rgba(255, 255, 255, 0.38);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transform: rotate(1.2deg);
}

.hero__visual::before {
  content: "虎皮更入味";
  position: absolute;
  top: -18px;
  left: -20px;
  z-index: 2;
  padding: 10px 14px;
  color: var(--paper);
  background: var(--chili);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  font-family: var(--display);
  font-size: 24px;
  font-weight: 900;
  transform: rotate(-5deg);
}

.hero__visual img {
  width: 100%;
  aspect-ratio: 1.38;
  object-fit: cover;
  border: 1px solid var(--line);
}

.hero__visual figcaption {
  margin-top: 10px;
  color: var(--ash);
  font-size: 12px;
}

.strategy-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 20px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.strategy-strip > div {
  min-height: 132px;
  padding: 18px;
  border: 1px solid rgba(245, 241, 232, 0.16);
  background: rgba(245, 241, 232, 0.05);
}

.strategy-strip strong {
  display: block;
  font-family: var(--display);
  font-size: clamp(28px, 4vw, 54px);
  line-height: 1;
}

.strategy-strip .statement {
  background: var(--chili);
  color: var(--paper);
}

.statement span {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  font-weight: 800;
}

.statement b {
  font-family: var(--display);
  font-size: clamp(25px, 3.4vw, 46px);
  line-height: 1.06;
}

.section-heading {
  display: grid;
  gap: 12px;
  margin-bottom: 34px;
}

.section-heading p:not(.eyebrow) {
  max-width: 760px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
}

.brief-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.brief-card,
.script-card,
.risk-grid article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.38);
  box-shadow: 0 10px 28px rgba(28, 17, 7, 0.08);
}

.brief-card span,
.script-card span,
.decision-card span {
  color: var(--chili);
  font-size: 13px;
  font-weight: 900;
}

.brief-card strong {
  display: block;
  margin: 8px 0 14px;
  font-family: var(--display);
  font-size: 34px;
  line-height: 1;
}

.brief-card p,
.risk-grid span {
  margin: 0;
  color: var(--ink-soft);
}

.pack-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(330px, 0.9fr);
  gap: 24px;
  align-items: stretch;
}

.evidence-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.evidence-card {
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.42);
  box-shadow: var(--shadow);
}

.evidence-card img {
  width: 100%;
  aspect-ratio: 1.66;
  object-fit: cover;
  border: 1px solid var(--line);
}

.evidence-card figcaption {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 14px;
}

.pack-gallery,
.pack-notes,
.tab-panels,
.budget-console,
.decision-grid,
.closing {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.42);
  box-shadow: var(--shadow);
}

.pack-gallery {
  padding: 14px;
}

.gallery-main {
  width: 100%;
  aspect-ratio: 1.38;
  object-fit: cover;
  background: var(--paper-deep);
  border: 1px solid var(--line);
}

.thumbs,
.tabs,
.filter-row,
.scenario-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.thumbs {
  margin-top: 12px;
}

button {
  font: inherit;
}

.thumb,
.tab,
.filter,
.scenario,
.copy {
  cursor: pointer;
  padding: 10px 13px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(245, 241, 232, 0.72);
  font-size: 14px;
  font-weight: 850;
  transition: 160ms ease;
}

.thumb:hover,
.tab:hover,
.filter:hover,
.scenario:hover,
.copy:hover,
.thumb.is-active,
.tab.is-active,
.filter.is-active,
.scenario.is-active {
  color: var(--paper);
  background: var(--ink);
}

.pack-notes {
  padding: 28px;
}

.flavor-lineup {
  margin: 22px 0 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.42);
  box-shadow: 0 16px 42px rgba(28, 17, 7, 0.1);
}

.flavor-lineup img {
  width: 100%;
  aspect-ratio: 3.65;
  object-fit: cover;
  border: 1px solid var(--line);
}

.flavor-lineup figcaption {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 14px;
}

.pack-copy {
  display: grid;
  gap: 6px;
  margin: 24px 0;
  padding: 22px;
  color: var(--paper);
  background:
    linear-gradient(90deg, rgba(23, 19, 15, 0.08) 1px, transparent 1px) 0 0 / 18px 18px,
    var(--chili);
  border: 2px solid var(--ink);
}

.pack-copy span,
.pack-copy em,
.pack-copy strong,
.pack-copy small {
  font-style: normal;
  font-weight: 900;
}

.pack-copy b {
  font-family: var(--display);
  font-size: clamp(42px, 5vw, 68px);
  line-height: 0.92;
}

.pack-copy em {
  width: fit-content;
  padding: 3px 8px;
  color: var(--ink);
  background: var(--acid);
}

.clean-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.clean-list li {
  padding-left: 18px;
  border-left: 3px solid var(--chili);
  color: var(--ink-soft);
}

.tabs {
  margin-bottom: 12px;
}

.tab-panels {
  padding: 30px;
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
  animation: rise 280ms ease both;
}

.tab-panel p {
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 18px;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 24px;
}

.mini-grid span {
  padding: 16px;
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius);
  text-align: center;
  font-weight: 900;
}

.budget-console,
.decision-grid {
  padding: 24px;
}

.scenario-buttons {
  margin-bottom: 22px;
}

.budget-bars {
  display: grid;
  gap: 14px;
}

.budget-item {
  display: grid;
  grid-template-columns: 156px 1fr 92px;
  gap: 12px;
  align-items: center;
}

.budget-item span {
  font-weight: 900;
}

.bar-track {
  height: 18px;
  overflow: hidden;
  background: rgba(23, 19, 15, 0.1);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.bar-fill {
  height: 100%;
  width: var(--w);
  background: linear-gradient(90deg, var(--chili), var(--oil));
  border-radius: inherit;
  transition: width 280ms ease;
}

.filter-row {
  margin-bottom: 18px;
}

.script-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.script-card {
  position: relative;
  min-height: 190px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.script-card.is-hidden {
  display: none;
}

.script-card p {
  margin: 16px 0 22px;
  font-family: var(--display);
  font-size: 27px;
  line-height: 1.18;
  font-weight: 880;
}

.copy {
  align-self: flex-start;
}

.timeline-list {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline-list li {
  display: grid;
  grid-template-columns: 150px minmax(130px, 220px) 1fr;
  gap: 18px;
  align-items: center;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.38);
}

.timeline-list time {
  color: var(--chili);
  font-family: Georgia, serif;
  font-weight: 900;
}

.timeline-list b {
  font-family: var(--display);
  font-size: 25px;
}

.timeline-list span {
  color: var(--ink-soft);
}

.decision-grid {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: 24px;
  align-items: stretch;
}

.sliders {
  display: grid;
  gap: 20px;
}

.sliders label {
  display: grid;
  grid-template-columns: 130px 78px 1fr;
  gap: 12px;
  align-items: center;
  font-weight: 900;
}

output {
  color: var(--chili);
  font-family: Georgia, serif;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--chili);
}

.decision-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 280px;
  padding: 26px;
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius);
}

.decision-card strong {
  margin: 10px 0 18px;
  font-family: var(--display);
  font-size: clamp(54px, 7vw, 96px);
  line-height: 0.9;
}

.decision-card p {
  margin: 0;
  color: rgba(245, 241, 232, 0.76);
  font-size: 18px;
}

.risk-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.risk-grid b {
  display: block;
  margin-bottom: 12px;
  font-family: var(--display);
  font-size: 26px;
}

.closing {
  padding: clamp(34px, 6vw, 70px);
  text-align: center;
}

blockquote {
  max-width: 920px;
  margin: 0 auto;
  font-family: var(--display);
  font-size: clamp(36px, 6vw, 84px);
  font-weight: 950;
  line-height: 1.08;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 30;
  padding: 12px 16px;
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  transition: 180ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 560ms ease, transform 560ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: minmax(0, 0.92fr) minmax(300px, 1.08fr);
    gap: 22px;
    min-height: calc(100vh - 72px);
    padding-top: 26px;
  }

  .pack-layout,
  .decision-grid,
  .evidence-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: clamp(40px, 5.7vw, 56px);
    line-height: 0.98;
  }

  .hero__lead {
    margin-top: 18px;
    font-size: 16px;
    line-height: 1.58;
  }

  .hero__actions {
    margin-top: 22px;
  }

  .button {
    min-height: 42px;
    padding: 10px 14px;
  }

  .hero__visual {
    padding: 10px;
  }

  .hero__visual::before {
    top: -14px;
    left: -10px;
    padding: 8px 11px;
    font-size: 20px;
  }

  .hero__visual figcaption {
    display: none;
  }

  .strategy-strip,
  .brief-grid,
  .risk-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .script-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mini-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .topbar {
    position: static;
    align-items: flex-start;
  }

  .nav {
    gap: 2px;
  }

  .nav a {
    padding: 6px 8px;
    font-size: 12px;
  }

  .section {
    width: min(100% - 24px, 1180px);
    padding: 54px 0;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 30px;
  }

  h1 {
    font-size: clamp(38px, 12vw, 58px);
  }

  .strategy-strip,
  .brief-grid,
  .script-grid,
  .risk-grid,
  .mini-grid {
    grid-template-columns: 1fr;
  }

  .budget-item,
  .timeline-list li,
  .sliders label {
    grid-template-columns: 1fr;
  }

  .hero__visual::before {
    left: 8px;
    font-size: 20px;
  }
}