/* paper3.css - paper3 (Sanguo stickman SLG) landing page. CSP-safe: external stylesheet only, no inline styles/scripts. */

:root {
  --paper: #efe6d2;
  --ink: #26221b;
  --ink-soft: #4a4235;
  --cinnabar: #a8322a;
  --cinnabar-2: #8f2a23;
  --gold: #b0862f;
  --line: #cbb98f;
  --dark: #211d17;
  --dark-2: #2c2720;
  --on-dark: #efe6d2;
  --shadow: 0 10px 30px rgba(33, 29, 23, .18);
  --maxw: 1120px;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 18% 12%, rgba(176, 134, 47, .07), transparent 42%),
    radial-gradient(circle at 86% 82%, rgba(168, 50, 42, .05), transparent 46%);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--cinnabar); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.25; letter-spacing: .02em; }

.section-title {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  text-align: center;
  margin: 0;
  color: var(--ink);
}
.section-title::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin: .55em auto 0;
  background: linear-gradient(90deg, transparent, var(--cinnabar), transparent);
}

/* ---------------- HERO ---------------- */
.hero {
  position: relative;
  color: var(--on-dark);
  background-color: var(--dark);
  background-image:
    linear-gradient(180deg, rgba(20, 17, 13, .80), rgba(20, 17, 13, .90)),
    url("assets/worldmap.jpg");
  background-size: cover;
  background-position: center 28%;
  background-repeat: no-repeat;
  border-bottom: 3px solid var(--gold);
}
.hero__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2.6rem, 7vw, 5rem) clamp(1.1rem, 4vw, 2.5rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: .34em;
  color: var(--gold);
  border: 1px solid rgba(176, 134, 47, .5);
  padding: .32em .95em;
  border-radius: 2px;
  margin: 0 0 1rem;
}
.hero__title {
  font-size: clamp(2.6rem, 9vw, 4.6rem);
  margin: 0 0 .12em;
  color: #f6efdd;
  text-shadow: 0 2px 18px rgba(0, 0, 0, .55);
  letter-spacing: .06em;
}
.hero__tag {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 3.4vw, 1.6rem);
  color: var(--gold);
  margin: 0 0 1rem;
  letter-spacing: .14em;
}
.hero__desc {
  max-width: 30em;
  color: #ded3bd;
  margin: 0 0 1.3rem;
}
.hero__points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}
.hero__points li {
  font-size: .88rem;
  background: rgba(176, 134, 47, .14);
  border: 1px solid rgba(176, 134, 47, .42);
  color: #ecdfc4;
  padding: .34em .9em;
  border-radius: 999px;
}

.qr-card {
  justify-self: center;
  width: 100%;
  max-width: 300px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.2rem 1.3rem 1.4rem;
  box-shadow: var(--shadow);
  text-align: center;
  position: relative;
}
.qr-card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(168, 50, 42, .35);
  border-radius: 6px;
  pointer-events: none;
}
.qr-card__seal {
  display: inline-block;
  font-family: var(--serif);
  font-weight: 700;
  color: #fff;
  background: var(--cinnabar);
  padding: .26em .85em;
  border-radius: 3px;
  letter-spacing: .2em;
  margin-bottom: .85rem;
  box-shadow: 0 2px 8px rgba(168, 50, 42, .4);
}
.qr-card__img {
  width: 220px;
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 6px;
}
.qr-card__hint {
  margin: .85rem 0 0;
  font-size: .95rem;
  color: var(--ink-soft);
  line-height: 1.55;
}

@media (min-width: 860px) {
  .hero__inner { grid-template-columns: 1.45fr .9fr; }
  .qr-card { justify-self: end; }
}

/* ---------------- FEATURES ---------------- */
.features {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2.6rem, 7vw, 4.6rem) clamp(1.1rem, 4vw, 2.5rem) 1rem;
}
.feature-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}
.feature {
  background: linear-gradient(180deg, #fbf6e9, #f1e7d0);
  border: 1px solid var(--line);
  border-left: 4px solid var(--cinnabar);
  border-radius: 8px;
  padding: 1.3rem 1.4rem;
  box-shadow: 0 4px 14px rgba(33, 29, 23, .06);
  transition: transform .2s ease, box-shadow .2s ease;
}
.feature:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(33, 29, 23, .12);
}
.feature h3 {
  margin: 0 0 .4rem;
  font-size: 1.2rem;
  color: var(--cinnabar-2);
}
.feature p { margin: 0; color: var(--ink-soft); }

@media (min-width: 720px) {
  .feature-grid { grid-template-columns: 1fr 1fr; gap: 1.4rem; }
}

/* ---------------- GALLERY ---------------- */
.gallery {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 4rem) clamp(1.1rem, 4vw, 2.5rem);
}
.shot-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(.7rem, 2vw, 1.3rem);
}
.shot {
  margin: 0;
  background: var(--dark-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(33, 29, 23, .1);
}
.shot img {
  width: 100%;
  height: auto;
  transition: transform .35s ease;
}
.shot:hover img { transform: scale(1.04); }
.shot figcaption {
  font-family: var(--serif);
  font-size: .88rem;
  text-align: center;
  color: var(--on-dark);
  background: var(--dark);
  padding: .62em .4em;
  letter-spacing: .05em;
}

@media (min-width: 680px) { .shot-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1000px) { .shot-grid { grid-template-columns: repeat(4, 1fr); } }

/* ---------------- CTA ---------------- */
.cta {
  color: var(--on-dark);
  background-color: var(--dark);
  background-image:
    linear-gradient(180deg, rgba(20, 17, 13, .90), rgba(20, 17, 13, .94)),
    url("assets/battle-charge.jpg");
  background-size: cover;
  background-position: center 42%;
  background-repeat: no-repeat;
  border-top: 3px solid var(--gold);
}
.cta__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2.6rem, 7vw, 4.6rem) clamp(1.1rem, 4vw, 2.5rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  justify-items: center;
  text-align: center;
}
.cta__text h2 {
  font-size: clamp(1.6rem, 4.5vw, 2.4rem);
  margin: 0 0 .45rem;
  color: #f6efdd;
}
.cta__text p { margin: 0; color: #ded3bd; }
.cta__qr {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem 1rem 1.1rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
}
.cta__qr img {
  width: 190px;
  height: auto;
  background: #fff;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
}
.cta__qr span { color: var(--ink-soft); font-size: .92rem; }

@media (min-width: 760px) {
  .cta__inner { grid-template-columns: 1.3fr .9fr; text-align: left; justify-items: start; }
}

/* ---------------- FOOTER ---------------- */
.site-foot {
  background: var(--dark);
  color: #b8ac93;
  text-align: center;
  padding: 2rem 1rem 2.4rem;
  font-size: .88rem;
}
.foot-brand {
  font-family: var(--serif);
  color: #e7dcc4;
  letter-spacing: .1em;
  margin: 0 0 .5rem;
  font-size: 1.05rem;
}
.foot-links { margin: 0 0 .5rem; }
.site-foot a { color: var(--gold); }
.foot-beian { margin: .3rem 0 0; }
.foot-beian a { color: #9a8f78; }