/* ============================================
   ArkSMS 云信 · Pages：各页专属 section
   ============================================ */

/* ---------- 内页 Hero ---------- */
.page-hero { position: relative; overflow: hidden; padding: 68px 0 52px; text-align: center; }
.page-hero::before, .page-hero::after { content: ''; position: absolute; border-radius: 50%; pointer-events: none; }
.page-hero::before { width: 560px; height: 560px; left: -180px; top: -260px; background: radial-gradient(circle, rgba(102, 126, 234, 0.16), transparent 65%); }
.page-hero::after { width: 620px; height: 620px; right: -220px; top: -200px; background: radial-gradient(circle, rgba(118, 75, 162, 0.13), transparent 65%); }
.page-hero > .container { position: relative; }
.page-hero h1 { margin-bottom: 14px; }
.page-hero .lede { max-width: 660px; margin: 0 auto; font-size: 16px; line-height: 1.8; color: var(--color-text-secondary); }

/* ---------- 首页 Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 92px 0 76px; }
.hero::before, .hero::after { content: ''; position: absolute; border-radius: 50%; pointer-events: none; }
.hero::before { width: 680px; height: 680px; left: -200px; top: -240px; background: radial-gradient(circle, rgba(102, 126, 234, 0.2), transparent 65%); }
.hero::after { width: 760px; height: 760px; right: -260px; top: -160px; background: radial-gradient(circle, rgba(118, 75, 162, 0.16), transparent 65%); }
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: 52px; line-height: 1.12; margin-bottom: 20px; }
.hero h1 .grad { background: var(--grad-hero); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { max-width: 520px; margin-bottom: 32px; font-size: 18px; line-height: 1.75; color: var(--color-text-secondary); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 16px; }
.hero-note { font-size: var(--fs-caption); color: var(--color-text-tertiary); }
.hero-trust { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 28px; }
.hero-trust span { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-small); color: var(--color-text-secondary); }
.hero-trust svg { color: var(--color-state-success); flex: none; }

/* 手机插画（纯 CSS） */
.hero-art { position: relative; display: flex; justify-content: center; }
.phone {
  position: relative; width: 300px; padding: 46px 16px 22px;
  background: #fff; border: 1px solid var(--color-border-light); border-radius: 38px;
  box-shadow: var(--shadow-overlay);
}
.phone-notch { position: absolute; top: 16px; left: 50%; transform: translateX(-50%); width: 96px; height: 8px; border-radius: 4px; background: var(--color-bg-page); }
.phone-title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; padding: 0 4px; font-size: var(--fs-caption); color: var(--color-text-tertiary); }
.msg { padding: 12px 14px; margin-bottom: 10px; background: var(--color-bg-page); border-radius: 14px 14px 14px 4px; }
.msg-sign { font-size: var(--fs-caption); font-weight: 600; color: var(--color-action-primary); margin-bottom: 4px; }
.msg p { font-size: var(--fs-small); line-height: 1.65; color: var(--color-text-primary); }
.msg p b { letter-spacing: 2px; }
.msg .chip { margin-top: 8px; }
.msg-intl { background: #f3eaff; }
.msg-intl .msg-sign { color: #722ed1; }
.float-card {
  position: absolute; display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; background: #fff; border: 1px solid var(--color-border-light);
  border-radius: 14px; box-shadow: var(--shadow-raised);
  font-size: var(--fs-caption); color: var(--color-text-secondary);
  animation: floaty 5s ease-in-out infinite;
}
.float-card b { display: block; font-size: 15px; color: var(--color-text-primary); letter-spacing: -0.02em; }
.float-card .fc-ico { width: 32px; height: 32px; flex: none; border-radius: 9px; display: flex; align-items: center; justify-content: center; color: #fff; }
.fc-1 { left: -8%; top: 12%; }
.fc-2 { right: -6%; bottom: 16%; animation-delay: 1.6s; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@media (prefers-reduced-motion: reduce) { .float-card { animation: none; } }
@media (max-width: 1023px) { .hero-inner { grid-template-columns: 1fr; gap: 40px; } .hero h1 { font-size: 40px; } }
@media (max-width: 767px) { .hero { padding: 56px 0 48px; } .hero h1 { font-size: 32px; } .hero-sub { font-size: 16px; } .hero-art { display: none; } }

/* ---------- 数字带 ---------- */
.stats-band { background: var(--color-bg-surface); border-block: 1px solid var(--color-border-light); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 52px 0 36px; }
.stat { text-align: center; }
.stat .num { font-size: 42px; font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; color: var(--color-action-primary); }
.stat .num small { margin-left: 2px; font-size: 15px; font-weight: 600; color: var(--color-text-secondary); }
.stat .label { margin-top: 8px; font-size: var(--fs-small); color: var(--color-text-secondary); }
.stats-foot { padding-bottom: 30px; text-align: center; font-size: var(--fs-caption); color: var(--color-text-tertiary); }
@media (max-width: 767px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 12px; padding: 40px 0 28px; } .stat .num { font-size: 32px; } }

/* ---------- 产品线卡片 ---------- */
.prod-card { display: flex; flex-direction: column; gap: 12px; }
.prod-card .icon { width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #fff; }
.prod-card h3 { font-size: 18px; }
.prod-card .desc { flex: 1; font-size: var(--fs-small); line-height: 1.75; color: var(--color-text-secondary); }
.prod-card .price { font-size: var(--fs-small); color: var(--color-text-secondary); }
.prod-card .price b { font-size: 16px; color: var(--color-text-primary); }
.prod-card .more { font-size: var(--fs-small); font-weight: 500; }
.prod-card .chip { align-self: flex-start; }

/* ---------- 三进程架构图 ---------- */
.arch-flow { display: flex; flex-wrap: wrap; align-items: stretch; justify-content: center; }
.arch-node {
  flex: 1; min-width: 150px; max-width: 210px; padding: 20px 14px; text-align: center;
  background: #fff; border: 1px solid var(--color-border-light); border-radius: var(--radius-card);
  box-shadow: var(--shadow-subtle);
}
.arch-node .t { margin-bottom: 6px; font-weight: 600; }
.arch-node .d { font-size: var(--fs-caption); line-height: 1.65; color: var(--color-text-secondary); }
.arch-node.is-gw { border-color: rgba(0, 113, 227, 0.4); background: var(--color-state-info-bg); }
.arch-arrow { display: flex; align-items: center; padding: 0 8px; color: var(--color-border); }
.arch-note { margin-top: 24px; text-align: center; font-size: var(--fs-small); color: var(--color-text-secondary); }
@media (max-width: 900px) { .arch-arrow { display: none; } .arch-flow { gap: 14px; } .arch-node { min-width: calc(50% - 14px); } }

/* ---------- 三级路由 ---------- */
.op-dots { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 12px; }
.op-dot { display: inline-flex; align-items: center; gap: 5px; font-size: var(--fs-caption); color: var(--color-text-secondary); }
.op-dot i { width: 8px; height: 8px; border-radius: 50%; }
.route-fail { margin-top: 28px; text-align: center; }
.route-fail .chip { height: 30px; padding: 0 16px; font-size: var(--fs-small); }

/* ---------- 功能格 ---------- */
.feat { display: flex; gap: 14px; align-items: flex-start; }
.feat .f-ico { flex: none; width: 38px; height: 38px; border-radius: 10px; background: var(--color-state-info-bg); color: var(--color-action-primary); display: flex; align-items: center; justify-content: center; }
.feat h3 { margin-bottom: 6px; font-size: 15px; }
.feat p { font-size: var(--fs-small); line-height: 1.7; color: var(--color-text-secondary); }

/* ---------- 新闻 ---------- */
.news-card { display: flex; flex-direction: column; gap: 10px; }
.news-card .meta { display: flex; align-items: center; gap: 10px; font-size: var(--fs-caption); color: var(--color-text-tertiary); }
.news-card h3 { font-size: 16px; line-height: 1.5; }
.news-card .sum {
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  font-size: var(--fs-small); line-height: 1.7; color: var(--color-text-secondary);
}
.news-row {
  display: flex; gap: 20px; align-items: flex-start;
  padding: 20px; margin-bottom: 14px;
  background: #fff; border: 1px solid var(--color-border-light); border-radius: var(--radius-card);
  color: var(--color-text-primary);
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}
.news-row:hover { transform: translateY(-2px); border-color: rgba(0, 113, 227, 0.45); box-shadow: var(--shadow-raised); color: var(--color-text-primary); }
.news-date { flex: none; width: 64px; padding: 8px 0; text-align: center; background: var(--color-bg-muted); border-radius: 12px; }
.news-date .d { font-size: 24px; font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; }
.news-date .ym { font-size: var(--fs-caption); color: var(--color-text-tertiary); }
.news-row .nr-body { flex: 1; min-width: 0; }
.news-row h3 { margin: 2px 0 6px; font-size: 16px; line-height: 1.5; }
.news-row .sum { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: var(--fs-small); line-height: 1.7; color: var(--color-text-secondary); }
.news-row.is-pinned { background: linear-gradient(135deg, rgba(102, 126, 234, 0.06), rgba(118, 75, 162, 0.06)); border-color: rgba(102, 126, 234, 0.35); }
.news-filter { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 32px; }
.filter-chip { height: 34px; padding: 0 18px; border-radius: var(--radius-chip); background: #fff; border: 1px solid var(--color-border); color: var(--color-text-secondary); font-size: var(--fs-small); font-weight: 500; transition: all var(--t-fast) var(--ease); }
.filter-chip:hover { border-color: var(--color-action-primary); color: var(--color-action-primary); }
.filter-chip.is-on { background: var(--color-action-primary); border-color: var(--color-action-primary); color: #fff; }
.news-more { display: block; margin: 26px auto 0; }
.news-empty { padding: 48px 20px; text-align: center; color: var(--color-text-tertiary); background: #fff; border: 1px dashed var(--color-border); border-radius: var(--radius-card); }
@media (max-width: 560px) { .news-row { gap: 14px; padding: 16px; } .news-date { width: 54px; } .news-date .d { font-size: 20px; } }

/* 详情页 */
.article { max-width: 800px; margin: 0 auto; padding: 48px; background: #fff; border: 1px solid var(--color-border-light); border-radius: var(--radius-container); box-shadow: var(--shadow-subtle); }
.article h1 { margin-bottom: 16px; font-size: 28px; line-height: 1.4; }
.article .meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; padding-bottom: 20px; border-bottom: 1px solid var(--color-divider); font-size: var(--fs-small); color: var(--color-text-tertiary); }
.article .body { margin-top: 26px; font-size: 15px; line-height: 1.95; color: #3a3a3c; }
.article .body p { margin-bottom: 14px; }
.article .body h3 { margin: 26px 0 10px; font-size: 18px; }
.article .body ul { padding-left: 20px; margin-bottom: 14px; list-style: disc; }
.article .body li { margin-bottom: 6px; }
.article .body strong { color: var(--color-text-primary); }
.pn-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 800px; margin: 24px auto 0; }
.pn-nav a { display: block; padding: 16px 18px; background: #fff; border: 1px solid var(--color-border-light); border-radius: var(--radius-card); transition: border-color var(--t-fast) var(--ease); }
.pn-nav a:hover { border-color: rgba(0, 113, 227, 0.45); }
.pn-nav .dir { display: block; margin-bottom: 4px; font-size: var(--fs-caption); color: var(--color-text-tertiary); }
.pn-nav .t { font-size: var(--fs-small); font-weight: 500; line-height: 1.6; color: var(--color-text-primary); }
.pn-nav a.next { text-align: right; }
.pn-nav a.disabled { opacity: 0.45; pointer-events: none; }
@media (max-width: 767px) { .article { padding: 28px 20px; } .article h1 { font-size: 22px; } .pn-nav { grid-template-columns: 1fr; } .pn-nav a.next { text-align: left; } }

/* ---------- 产品页 ---------- */
.rule-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 28px; }
.rule-box { padding: 22px; background: var(--color-bg-muted); border: 1px solid var(--color-border-light); border-radius: var(--radius-card); }
.rule-box h4 { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.rule-box p, .rule-box li { font-size: var(--fs-small); line-height: 1.8; color: var(--color-text-secondary); }
.rule-box ul { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.rule-box .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.op-band { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 14px; margin-top: 28px; padding: 18px; background: #fff; border: 1px solid var(--color-border-light); border-radius: var(--radius-card); }
.op-band .op { display: inline-flex; align-items: center; gap: 7px; font-size: var(--fs-small); font-weight: 500; }
.op-band .op i { width: 10px; height: 10px; border-radius: 50%; }
.op-band .sep { width: 1px; height: 18px; background: var(--color-divider); }
.op-band .tip { font-size: var(--fs-caption); color: var(--color-text-tertiary); }
.scene-card { display: flex; flex-direction: column; gap: 10px; }
.scene-card h3 { font-size: 17px; }
.scene-card .rec { font-size: var(--fs-small); color: var(--color-text-secondary); line-height: 1.7; }
.scene-card .rec b { color: var(--color-action-primary); font-weight: 600; }
.scene-card .warn { margin-top: auto; padding: 10px 12px; background: var(--color-state-warning-bg); border-radius: 10px; font-size: var(--fs-caption); line-height: 1.7; color: #8a5300; }
@media (max-width: 767px) { .rule-cols { grid-template-columns: 1fr; } }

/* ---------- 价格页 ---------- */
.plan { position: relative; display: flex; flex-direction: column; gap: 4px; padding: 34px 24px 28px; text-align: center; }
.plan .name { font-weight: 600; }
.plan .price { margin-top: 8px; font-size: 42px; font-weight: 700; letter-spacing: -0.03em; line-height: 1; }
.plan .price small { font-size: 14px; font-weight: 500; color: var(--color-text-secondary); }
.plan .orig { margin-top: 6px; font-size: var(--fs-small); color: var(--color-text-tertiary); text-decoration: line-through; }
.plan .unit { font-size: var(--fs-caption); color: var(--color-text-tertiary); }
.plan ul { display: flex; flex-direction: column; gap: 9px; margin: 18px 0 24px; font-size: var(--fs-small); color: var(--color-text-secondary); }
.plan ul li { display: flex; align-items: center; justify-content: center; gap: 6px; }
.plan ul svg { color: var(--color-state-success); flex: none; }
.plan.is-hot { border-color: var(--color-action-primary); box-shadow: 0 8px 28px rgba(0, 113, 227, 0.16); }
.plan .hot-tag { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); padding: 4px 16px; border-radius: var(--radius-chip); background: var(--color-action-primary); color: #fff; font-size: var(--fs-caption); font-weight: 600; }
.price-note { margin-top: 20px; text-align: center; font-size: var(--fs-caption); color: var(--color-text-tertiary); }
.pay-flow { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 12px; }
.pay-step { display: flex; align-items: center; gap: 10px; padding: 14px 18px; background: #fff; border: 1px solid var(--color-border-light); border-radius: var(--radius-card); font-size: var(--fs-small); font-weight: 500; }
.pay-step .n { width: 24px; height: 24px; flex: none; border-radius: 50%; background: var(--color-state-success-bg); color: #1d8f3f; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; }
.pay-arrow { color: var(--color-border); }
.agent-band { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; padding: 32px; background: var(--grad-hero); border-radius: var(--radius-container); color: #fff; }
.agent-band h3 { color: #fff; font-size: 20px; margin-bottom: 8px; }
.agent-band p { font-size: var(--fs-small); line-height: 1.8; color: rgba(255, 255, 255, 0.86); max-width: 560px; }
@media (max-width: 900px) { .pay-arrow { display: none; } }

/* ---------- 开发者页 ---------- */
.dev-note { display: flex; gap: 10px; align-items: flex-start; max-width: 800px; margin: 0 auto 36px; padding: 14px 18px; background: var(--color-state-info-bg); border-radius: 12px; font-size: var(--fs-small); line-height: 1.7; color: #0a5bb5; }
.dev-note svg { flex: none; margin-top: 2px; }
.api-card { display: flex; flex-direction: column; gap: 10px; }
.api-card .f-ico { width: 38px; height: 38px; border-radius: 10px; background: var(--color-state-info-bg); color: var(--color-action-primary); display: flex; align-items: center; justify-content: center; }
.api-card h3 { font-size: 15px; }
.api-card p { font-size: var(--fs-small); line-height: 1.7; color: var(--color-text-secondary); }
.code-tabs { max-width: 860px; margin: 0 auto; }
.code-tabs .tabs { justify-content: flex-start; margin-bottom: 16px; }
.code-tabs .tab-btn { height: 34px; padding: 0 18px; font-size: var(--fs-small); }

/* ---------- 关于页 ---------- */
.about-intro { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: center; }
.about-intro p { margin-bottom: 14px; font-size: 15px; line-height: 1.95; color: var(--color-text-secondary); }
.about-intro .chips { display: flex; flex-wrap: wrap; gap: 8px; }
.about-intro .chips .chip { height: 30px; padding: 0 14px; font-size: var(--fs-small); }
.comp-card { display: flex; flex-direction: column; gap: 10px; }
.comp-card .f-ico { width: 40px; height: 40px; border-radius: 11px; background: var(--color-state-success-bg); color: #1d8f3f; display: flex; align-items: center; justify-content: center; }
.comp-card h3 { font-size: 16px; }
.comp-card p { font-size: var(--fs-small); line-height: 1.75; color: var(--color-text-secondary); }
.license-slot { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; margin-top: 28px; }
.license-slot .slot { width: 200px; height: 130px; display: flex; align-items: center; justify-content: center; text-align: center; padding: 12px; background: var(--color-bg-muted); border: 1px dashed var(--color-border); border-radius: 12px; font-size: var(--fs-caption); color: var(--color-text-tertiary); }
.contact-card { text-align: center; }
.contact-card .f-ico { margin: 0 auto 12px; width: 44px; height: 44px; border-radius: 12px; background: var(--color-state-info-bg); color: var(--color-action-primary); display: flex; align-items: center; justify-content: center; }
.contact-card h3 { font-size: 16px; margin-bottom: 6px; }
.contact-card p { font-size: var(--fs-small); color: var(--color-text-secondary); line-height: 1.8; }
@media (max-width: 900px) { .about-intro { grid-template-columns: 1fr; gap: 28px; } }

/* ---------- 404 ---------- */
.nf-wrap { padding: 110px 0 130px; text-align: center; }
.nf-wrap .code { font-size: 110px; font-weight: 700; letter-spacing: -0.04em; line-height: 1; background: var(--grad-hero); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nf-wrap h1 { margin: 16px 0 10px; font-size: 24px; }
.nf-wrap p { margin-bottom: 28px; color: var(--color-text-secondary); }