:root {
  --color-bg: #f8f7f4;
  --color-paper: #fdfbf5;
  --color-ink: #2b2723;
  --color-sub-ink: #5a534b;
  --color-deep-sea: #102a5e;
  --color-sea-green: #2b5081;
  --color-warm: #b97742;
  --color-border: rgba(43, 39, 35, 0.16);
  --color-hairline: rgba(43, 39, 35, 0.3);
  --font-serif: "Zen Old Mincho", "Yu Mincho", "YuMincho", "Hiragino Mincho ProN",
    "Hiragino Mincho Pro", "Noto Serif JP", serif;
  --font-sans: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", sans-serif;
}

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

html {
  background: var(--color-bg);
  color: var(--color-ink);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: clip;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  line-height: 1.85;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
textarea {
  font: inherit;
}

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

p,
h1,
h2,
h3,
figure,
dl,
dd {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--color-sea-green);
  outline-offset: 4px;
}

::selection {
  color: var(--color-paper);
  background: var(--color-sea-green);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 14px;
  color: var(--color-paper);
  background: var(--color-deep-sea);
  transform: translateY(-140%);
  transition: transform 180ms ease;
}

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

.container {
  width: min(calc(100% - 40px), 1080px);
  margin-inline: auto;
}

.container.narrow {
  max-width: 720px;
}

.section {
  position: relative;
  padding: 88px 0;
  scroll-margin-top: 28px;
}

/* ---------------------------------- hero ---------------------------------- */

.hero-stage {
  position: relative;
}

.teaser-hero {
  position: sticky;
  top: 0;
  height: 100svh;
  overflow: hidden;
  color: var(--color-paper);
  background: var(--color-deep-sea);
}

.hero-about {
  position: relative;
  z-index: 3;
  display: grid;
  place-items: center;
  min-height: 100svh;
  padding: 64px 20px;
}

.hero-about-panel {
  display: grid;
  gap: 26px;
  width: min(100%, 560px);
  border: 1px solid rgba(253, 251, 245, 0.5);
  padding: clamp(34px, 7vw, 56px);
  background: rgba(253, 251, 245, 0.72);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.hero-about-line {
  display: grid;
  gap: 16px;
  margin-top: 4px;
  padding-top: 26px;
  border-top: 1px solid var(--color-border);
}

.hero-about-line p {
  color: var(--color-sub-ink);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  line-height: 1.8;
  text-align: center;
}

.hero-about-line .hero-about-note {
  margin-top: 2px;
  color: var(--color-sub-ink);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  line-height: 1.7;
  opacity: 0.78;
}

/* JS有効時: パネルはヒーローと同じ位置に重なり、スクロール量でフェード切替 */
.hero-stage.is-fx {
  height: 200svh;
}

.hero-stage.is-fx .hero-about {
  position: sticky;
  top: 0;
  height: 100svh;
  min-height: 0;
  margin-top: -100svh;
  pointer-events: none;
}

.hero-stage.is-fx .hero-about-panel {
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px);
  transition: opacity 800ms ease, transform 800ms ease;
}

.hero-stage.is-fx.is-panel-shown .hero-about-panel {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

/* 行ごとのフェードイン（パネル表示後に順番に灯る） */
.hero-stage.is-fx .fade-line {
  display: block;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 700ms ease, transform 700ms ease;
  transition-delay: 0ms;
}

.hero-stage.is-fx .hero-about-line {
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 700ms ease, transform 700ms ease;
  transition-delay: 0ms;
}

.hero-stage.is-fx.is-panel-shown .fade-line,
.hero-stage.is-fx.is-panel-shown .hero-about-line {
  opacity: 1;
  transform: none;
}

.hero-stage.is-fx.is-panel-shown .hero-about-line {
  pointer-events: auto;
}

.hero-stage.is-fx.is-panel-shown .poem-text p:nth-child(1) .fade-line:nth-child(1) {
  transition-delay: 400ms;
}

.hero-stage.is-fx.is-panel-shown .poem-text p:nth-child(1) .fade-line:nth-child(2) {
  transition-delay: 950ms;
}

.hero-stage.is-fx.is-panel-shown .poem-text p:nth-child(2) .fade-line:nth-child(1) {
  transition-delay: 1500ms;
}

.hero-stage.is-fx.is-panel-shown .poem-text p:nth-child(3) .fade-line:nth-child(1) {
  transition-delay: 2050ms;
}

.hero-stage.is-fx.is-panel-shown .poem-text p:nth-child(3) .fade-line:nth-child(2) {
  transition-delay: 2600ms;
}

.hero-stage.is-fx.is-panel-shown .hero-about-line {
  transition-delay: 3250ms;
}

.teaser-hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.94;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(14, 38, 88, 0.2) 0%,
    rgba(14, 38, 88, 0.02) 42%,
    rgba(14, 38, 88, 0.4) 100%
  );
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-paper);
  transform: translate(-50%, -50%);
}

.hero-meta time,
.section-title,
.requirements-card h3,
.theme-word,
.footer-brand {
  font-family: var(--font-serif);
}

.teaser-hero h1 {
  --hero-copy-column-width: 1.95em;
  display: flex;
  flex-direction: row-reverse;
  align-items: flex-start;
  justify-content: center;
  height: min(62svh, 530px);
  max-height: min(62svh, 530px);
  width: calc(var(--hero-copy-column-width) + var(--hero-copy-column-width));
  margin: 0;
  color: var(--color-paper);
  font-family: var(--font-serif);
  font-size: clamp(1.55rem, 5vw, 2.25rem);
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1.95;
  text-shadow: 0 0 28px rgba(16, 42, 94, 0.4);
}

.typewriter-line {
  display: block;
  width: var(--hero-copy-column-width);
  min-width: var(--hero-copy-column-width);
  height: 100%;
  min-height: 1em;
  padding: 0.5em 0.06em 0.36em;
  white-space: nowrap;
  writing-mode: vertical-rl;
}

.typewriter-char {
  display: inline;
}

.typewriter-line.is-active::after {
  display: inline-block;
  width: 0.72em;
  height: 1px;
  margin-inline-start: 0.18em;
  content: "";
  background: rgba(253, 251, 245, 0.78);
  vertical-align: middle;
  animation: cursorBlink 1s infinite;
}

@keyframes cursorBlink {
  0%,
  50% {
    opacity: 1;
  }

  51%,
  100% {
    opacity: 0;
  }
}

.hero-meta {
  position: absolute;
  right: calc(100% + clamp(16px, 3vw, 32px));
  bottom: 0;
  display: flex;
  gap: 12px;
  margin: 0;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.hero-meta time {
  color: rgba(253, 251, 245, 0.94);
  font-size: 0.96rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  line-height: 1;
}

.hero-meta span {
  align-self: flex-start;
  color: rgba(253, 251, 245, 0.6);
  font-family: var(--font-sans);
  font-size: 0.6rem;
  letter-spacing: 0.34em;
  line-height: 1;
  text-transform: uppercase;
}

.hero-sequence {
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
}

.teaser-hero.is-typewriter-complete .hero-sequence-date {
  animation: heroSequenceFloat 920ms ease forwards;
}

.teaser-hero.is-typewriter-complete .hero-sequence-scroll {
  animation: heroSequenceFloat 920ms ease 640ms forwards;
}

.hero-scroll {
  position: absolute;
  left: 0;
  right: 0;
  bottom: clamp(22px, 5svh, 42px);
  z-index: 2;
  display: grid;
  gap: 10px;
  justify-items: center;
  width: max-content;
  margin-inline: auto;
  color: rgba(253, 251, 245, 0.72);
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  line-height: 1.15;
  text-indent: 0.3em;
  text-transform: uppercase;
}

.hero-scroll-line {
  position: relative;
  display: block;
  width: 1px;
  height: 36px;
  overflow: hidden;
  background: rgba(253, 251, 245, 0.28);
}

.hero-scroll-line::before {
  position: absolute;
  top: -100%;
  left: 0;
  width: 1px;
  height: 100%;
  content: "";
  background: rgba(253, 251, 245, 0.9);
}

.teaser-hero.is-typewriter-complete .hero-scroll {
  pointer-events: auto;
}

.teaser-hero.is-typewriter-complete .hero-scroll-line::before {
  animation: scrollCue 2.2s ease-in-out 1.45s infinite;
}

@keyframes heroSequenceFloat {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollCue {
  0% {
    top: -100%;
  }

  55%,
  100% {
    top: 100%;
  }
}

/* --------------------------------- button --------------------------------- */

.button-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
}

.teaser-hero .button-row {
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  width: 100%;
  max-width: 100%;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  letter-spacing: 0.16em;
  line-height: 1.35;
  text-align: center;
  text-indent: 0.16em;
  overflow-wrap: anywhere;
  transition: opacity 240ms ease, background-color 240ms ease, border-color 240ms ease,
    color 240ms ease;
}

.button:hover {
  opacity: 0.85;
}

.button-primary:hover {
  opacity: 1;
  border-color: #1b3d78;
  background: #1b3d78;
}

.button-hero-primary {
  color: var(--color-deep-sea);
  border: 1px solid rgba(253, 251, 245, 0.76);
  background: var(--color-paper);
}

.button-hero-secondary {
  color: var(--color-paper);
  border: 1px solid rgba(253, 251, 245, 0.5);
  background: transparent;
}

.button-primary {
  color: var(--color-paper);
  border: 1px solid var(--color-deep-sea);
  background: var(--color-deep-sea);
}

.button-primary:disabled,
.button-primary[disabled] {
  cursor: not-allowed;
  opacity: 0.38;
  border-color: var(--color-deep-sea);
  background: var(--color-deep-sea);
}

.button-primary:disabled:hover {
  opacity: 0.38;
  border-color: var(--color-deep-sea);
  background: var(--color-deep-sea);
}

.button-outline {
  color: var(--color-deep-sea);
  border: 1px solid var(--color-hairline);
  background: transparent;
}

.button-outline:hover {
  opacity: 1;
  border-color: var(--color-deep-sea);
}

.button-line {
  width: auto;
  min-width: 240px;
  justify-self: center;
  color: #fff;
  border: 1px solid #06c755;
  border-radius: 999px;
  padding: 13px 40px;
  background: #06c755;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-indent: 0.08em;
}

.button-line:hover {
  opacity: 1;
  border-color: #05b34c;
  background: #05b34c;
}

.button.full {
  width: 100%;
}

.hero-fade {
  opacity: 0;
  transform: translateY(20px);
  animation: heroFade 900ms ease forwards;
}

[data-typewriter].hero-fade {
  transform: none;
  animation-name: heroFadeOpacity;
}

.hero-fade-kicker {
  animation-delay: 0.25s;
}

.hero-fade-brand {
  animation-delay: 0.48s;
}

.hero-fade-copy {
  animation-delay: 0.88s;
}

.hero-fade-date {
  animation-delay: 1.18s;
}

.hero-fade-cta {
  animation-delay: 1.45s;
}

@keyframes heroFade {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroFadeOpacity {
  to {
    opacity: 1;
  }
}

/* -------------------------------- sections -------------------------------- */

.section-title {
  color: var(--color-ink);
  font-feature-settings: "palt" 1;
  font-size: clamp(1.55rem, 5.5vw, 2.1rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.85;
}

.poem-text,
.body-copy,
.form-lead {
  color: var(--color-sub-ink);
  font-size: 0.96rem;
  letter-spacing: 0.04em;
  line-height: 2.2;
}

.poem-text p + p,
.body-copy p + p {
  margin-top: 24px;
}

/* ------------------------------ LINE callout ------------------------------ */

.line-callout {
  display: grid;
  gap: 20px;
  margin-top: 64px;
  padding: 30px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.line-callout p {
  color: var(--color-sub-ink);
  letter-spacing: 0.04em;
  line-height: 2;
}

.line-callout.bottom {
  grid-template-columns: 1fr;
  justify-items: center;
  margin-top: 56px;
  text-align: center;
}

/* ---------------------------------- theme --------------------------------- */

.theme-section {
  overflow: hidden;
  background: var(--color-bg);
}

.theme-section .container {
  position: relative;
}

.theme-section .section-title {
  text-align: center;
}

.theme-layout {
  display: grid;
  gap: 38px;
  margin-top: 40px;
}

.theme-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  width: 100%;
  padding: 30px 24px;
  color: var(--color-paper);
  background: var(--color-deep-sea);
}

.theme-info {
  display: grid;
  gap: 30px;
  align-content: start;
}

.theme-card::after {
  position: absolute;
  inset: 10px;
  content: "";
  border: 1px solid rgba(253, 251, 245, 0.16);
  pointer-events: none;
}

.theme-word {
  margin: auto;
  color: var(--color-paper);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: clamp(3.2rem, 16vw, 4rem);
  font-weight: 500;
  letter-spacing: 0.3em;
  line-height: 1;
}

/* ------------------------------ requirements ------------------------------ */

.requirements-list {
  display: grid;
  gap: 0;
  padding: 12px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.requirements-list li {
  position: relative;
  padding: 6px 0 6px 16px;
  color: var(--color-sub-ink);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  line-height: 1.8;
}

.requirements-list li::before {
  position: absolute;
  top: calc(6px + 0.9em);
  left: 2px;
  width: 5px;
  height: 1px;
  content: "";
  background: var(--color-ink);
}

.requirements-closing {
  margin-top: 56px;
  color: var(--color-deep-sea);
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 4.5vw, 1.3rem);
  letter-spacing: 0.08em;
  line-height: 2;
  text-align: center;
}

/* ---------------------------------- form ---------------------------------- */

.form-section {
  background: transparent;
}

.form-lead {
  margin-top: 28px;
}

.poem-form {
  display: grid;
  gap: 20px;
  margin-top: 36px;
  padding: 32px 20px;
  border: 1px solid var(--color-border);
  background: var(--color-paper);
}

.form-field {
  display: grid;
  gap: 9px;
}

.form-grid {
  display: grid;
  gap: 26px;
}

.form-field label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--color-ink);
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.required-mark,
.optional-mark {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  padding: 2px 8px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-indent: 0.12em;
}

.required-mark {
  color: var(--color-paper);
  background: var(--color-sea-green);
}

.optional-mark {
  color: var(--color-sub-ink);
  border: 1px solid var(--color-border);
  background: transparent;
}

input,
textarea,
select {
  width: 100%;
  min-height: 52px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 13px 15px;
  color: var(--color-ink);
  background: #fff;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 40px;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-sub-ink) 50%),
    linear-gradient(135deg, var(--color-sub-ink) 50%, transparent 50%);
  background-position: calc(100% - 21px) calc(50% - 2px), calc(100% - 16px) calc(50% - 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  cursor: pointer;
}

textarea {
  min-height: 190px;
  resize: vertical;
  line-height: 1.9;
}

#poem-body {
  min-height: 300px;
  font-family: var(--font-serif);
  font-size: 1.02rem;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-sea-green);
  box-shadow: 0 0 0 3px rgba(43, 80, 129, 0.16);
  outline: 0;
}

input::placeholder,
textarea::placeholder {
  color: rgba(90, 83, 75, 0.5);
}

.poem-preview-control {
  display: grid;
  gap: 14px;
  margin-top: 2px;
}

.preview-toggle {
  min-height: 44px;
  justify-self: start;
  border: 1px solid var(--color-hairline);
  border-radius: 2px;
  padding: 9px 20px;
  color: var(--color-deep-sea);
  background: transparent;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.86rem;
  letter-spacing: 0.1em;
  line-height: 1.4;
  text-indent: 0.1em;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.preview-toggle:hover {
  border-color: var(--color-deep-sea);
}

.preview-toggle[aria-expanded="true"] {
  color: var(--color-paper);
  border-color: var(--color-deep-sea);
  background: var(--color-deep-sea);
}

.poem-preview {
  display: grid;
  gap: 10px;
}

.poem-preview[hidden] {
  display: none;
}

.poem-preview-label {
  color: var(--color-sub-ink);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  line-height: 1.6;
}

.poem-preview-paper {
  min-height: 380px;
  max-height: min(78svh, 640px);
  overflow: auto;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 26px 24px;
  color: var(--color-ink);
  background:
    linear-gradient(90deg, rgba(43, 39, 35, 0.03) 0 1px, transparent 1px 32px),
    var(--color-paper);
  font-family: var(--font-serif);
  font-size: 1.08rem;
  letter-spacing: 0.08em;
  line-height: 2.1;
  text-orientation: mixed;
  white-space: pre-wrap;
  writing-mode: vertical-rl;
}

.poem-preview-paper.is-empty {
  color: rgba(90, 83, 75, 0.66);
}

.field-note,
.line-count {
  color: var(--color-sub-ink);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  line-height: 1.75;
}

.field-row {
  display: grid;
  gap: 6px;
}

.line-count {
  justify-self: start;
}

.line-count.is-over {
  color: var(--color-warm);
}

/* ---------------------------------- terms --------------------------------- */

.terms-box {
  overflow: hidden;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.terms-box h3 {
  margin: 0;
}

.accordion-trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  color: var(--color-ink);
  border: 0;
  background: transparent;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.1em;
  line-height: 1.7;
  text-align: left;
}

.accordion-icon {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}

.accordion-icon::before,
.accordion-icon::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 1px;
  content: "";
  background: var(--color-ink);
  transform: translate(-50%, -50%);
  transition: transform 180ms ease;
}

.accordion-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.accordion-trigger[aria-expanded="true"] .accordion-icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.accordion-panel {
  padding: 0 0 24px;
  color: var(--color-sub-ink);
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  line-height: 2;
}

.accordion-panel h4 {
  margin: 0 0 14px;
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.7;
}

.accordion-panel p + p {
  margin-top: 16px;
}

.consent-check {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  color: var(--color-ink);
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.7;
}

.consent-check input {
  width: 20px;
  height: 20px;
  min-height: 0;
  margin-top: 4px;
  accent-color: var(--color-sea-green);
}

.form-message {
  border-radius: 2px;
  padding: 14px 16px;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.7;
}

.form-message.error {
  color: #79402f;
  border: 1px solid rgba(185, 119, 66, 0.4);
  background: rgba(185, 119, 66, 0.08);
}

.form-message.success {
  color: var(--color-deep-sea);
  border: 1px solid rgba(43, 80, 129, 0.4);
  background: rgba(43, 80, 129, 0.06);
}

/* --------------------------------- footer --------------------------------- */

.site-footer {
  padding: 52px 0 56px;
  color: rgba(253, 251, 245, 0.78);
  background: var(--color-deep-sea);
}

.footer-inner {
  display: grid;
  gap: 28px;
}

.footer-brand {
  color: var(--color-paper);
  font-size: 1.1rem;
  letter-spacing: 0.16em;
  line-height: 1.7;
}

.footer-copy,
.copyright {
  color: rgba(253, 251, 245, 0.6);
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  line-height: 1.9;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  font-size: 0.84rem;
  letter-spacing: 0.06em;
}

.footer-nav a {
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(253, 251, 245, 0.32);
  transition: border-color 180ms ease;
}

.footer-nav a:hover {
  border-color: rgba(253, 251, 245, 0.8);
}

.copyright {
  padding-top: 24px;
  border-top: 1px solid rgba(253, 251, 245, 0.16);
}

/* ------------------------- sub pages (thanks / legal) ------------------------- */

.subpage {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.subpage #main {
  flex: 1 0 auto;
}

.subpage-header {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.subpage-brand {
  display: inline-block;
  color: var(--color-deep-sea);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-indent: 0.24em;
}

/* completion */

.completion-main {
  display: grid;
  place-items: center;
  padding: clamp(64px, 14vh, 150px) 0;
}

.completion {
  display: grid;
  justify-items: center;
  gap: 26px;
  text-align: center;
}

.completion-mark {
  width: 84px;
  height: 84px;
  color: var(--color-deep-sea);
}

.completion-title {
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 6vw, 2.3rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.6;
}

.completion-text {
  max-width: 30em;
  color: var(--color-sub-ink);
  font-size: 0.96rem;
  letter-spacing: 0.04em;
  line-height: 2.1;
}

.completion .button {
  width: auto;
  min-width: 240px;
}

.line-callout .callout-note {
  color: var(--color-sub-ink);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  line-height: 1.7;
  opacity: 0.78;
}

/* legal */

.legal-main {
  padding: clamp(56px, 9vw, 110px) 0;
}

.legal-title {
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 5.5vw, 2.2rem);
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.7;
}

.legal-lead {
  margin-top: 24px;
  color: var(--color-sub-ink);
  font-size: 0.94rem;
  letter-spacing: 0.03em;
  line-height: 2.1;
}

.legal-section {
  margin-top: 44px;
}

.legal-section h2 {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.6;
}

.legal-section p {
  margin-top: 16px;
  color: var(--color-sub-ink);
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  line-height: 2.05;
}

.legal-list {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.legal-list li {
  position: relative;
  padding-left: 16px;
  color: var(--color-sub-ink);
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  line-height: 2.05;
}

.legal-list li::before {
  position: absolute;
  top: calc(0.5em + 5px);
  left: 2px;
  width: 5px;
  height: 1px;
  content: "";
  background: var(--color-ink);
}

.legal-meta {
  margin-top: 48px;
  color: var(--color-sub-ink);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  line-height: 1.9;
}

.legal-back {
  display: flex;
  justify-content: center;
  margin-top: 52px;
}

.legal-back .button {
  width: auto;
  min-width: 240px;
}

.legal a.inline-link {
  border-bottom: 1px solid var(--color-hairline);
  transition: border-color 180ms ease;
}

.legal a.inline-link:hover {
  border-color: var(--color-deep-sea);
}

/* --------------------------------- reveal --------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 1100ms ease, transform 1100ms ease;
}

.reveal-slow {
  transform: translateY(30px);
  transition-duration: 2000ms;
  transition-delay: 200ms;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ------------------------------ confirm modal ----------------------------- */

.confirm-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 20px;
}

.confirm-modal[hidden] {
  display: none;
}

.confirm-overlay {
  position: absolute;
  inset: 0;
  background: rgba(16, 42, 94, 0.5);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}

.confirm-dialog {
  position: relative;
  width: min(100%, 640px);
  max-height: 86svh;
  overflow: auto;
  border: 1px solid var(--color-border);
  padding: clamp(28px, 5vw, 44px);
  background: var(--color-paper);
  box-shadow: 0 30px 80px rgba(16, 42, 94, 0.28);
}

.confirm-title {
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.6;
}

.confirm-lead {
  margin-top: 12px;
  color: var(--color-sub-ink);
  font-size: 0.88rem;
  letter-spacing: 0.03em;
  line-height: 1.9;
}

.confirm-list {
  display: grid;
  gap: 0;
  margin: 24px 0 0;
}

.confirm-list > div {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--color-border);
}

.confirm-list > div:last-child {
  border-bottom: 1px solid var(--color-border);
}

.confirm-list dt {
  color: var(--color-sub-ink);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.5;
}

.confirm-list dd {
  margin: 0;
  color: var(--color-ink);
  font-size: 0.94rem;
  letter-spacing: 0.02em;
  line-height: 1.9;
  white-space: pre-wrap;
  word-break: break-word;
}

.confirm-list dd.is-poem {
  font-family: var(--font-serif);
  font-size: 1rem;
}

.confirm-actions {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.confirm-actions .button {
  width: 100%;
  margin: 0;
}

@media (min-width: 560px) {
  .confirm-actions {
    grid-template-columns: 1fr 1fr;
  }
}

/* ------------------------------ media queries ----------------------------- */

@media (min-width: 640px) {
  .container {
    width: min(calc(100% - 72px), 1080px);
  }

  .button-row {
    flex-flow: row wrap;
    align-items: center;
  }

  .button {
    width: auto;
    min-width: 220px;
  }

  .line-callout {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .hero-about-panel {
    width: min(100%, 600px);
  }

  .hero-about-panel .poem-text {
    text-align: center;
  }

  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .field-row {
    grid-template-columns: 1fr auto;
    align-items: start;
  }

  .poem-form {
    padding: 44px 48px;
  }
}

@media (min-width: 900px) {
  .section {
    padding: 130px 0;
  }

  .section-title {
    font-size: clamp(1.8rem, 2.6vw, 2.3rem);
  }

  .theme-layout {
    grid-template-columns: minmax(260px, 300px) 1fr;
    gap: clamp(44px, 6vw, 72px);
    align-items: stretch;
    margin-top: 48px;
  }

  .theme-card {
    min-height: 440px;
    padding: 38px 30px;
  }

  .requirements-closing {
    margin-top: 72px;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .copyright {
    grid-column: 1 / -1;
  }
}

@media (max-width: 380px) {
  .container {
    width: min(calc(100% - 32px), 1080px);
  }

  .teaser-hero h1 {
    font-size: clamp(1.38rem, 7vw, 2rem);
  }

  .poem-form {
    padding-inline: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }

  .teaser-hero-video {
    opacity: 0.46;
  }

  .hero-fade,
  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
    animation: none;
  }
}